v0.1.12

.env.alpha

@@ -1,4 +1,4 @@
-APP_NAME=Lean 101 Clients API
+APP_NAME=Hunter App
 CLIENT_NAME=Hunter Premium Produce
 CLIENT_EMAIL=alex@lean-101.com
 CLIENT_PASSWORD=JBBwVCDqmPA7

.env.alpha.example

@@ -1,4 +1,4 @@
-APP_NAME=Lean 101 Clients API
+APP_NAME=Hunter App
 APP_ENV=alpha
 CLIENT_NAME=Hunter Premium Produce
 CLIENT_EMAIL=operator@example.com

.env.example

@@ -1,4 +1,4 @@
-APP_NAME=Lean 101 Clients API
+APP_NAME=Hunter App
 APP_ENV=production
 CLIENT_NAME=Hunter Premium Produce
 CLIENT_EMAIL=operator@example.com

.env.production.example

@@ -1,4 +1,4 @@
-APP_NAME=Lean 101 Clients API
+APP_NAME=Hunter App
 APP_ENV=production
 CLIENT_NAME=Hunter Premium Produce
 CLIENT_EMAIL=operator@example.com

TECH_DEBT.md

@@ -0,0 +1,335 @@
+# Tech Debt Audit & Remediation Plan
+
+> Status: **Plan / not yet started.** Audit performed 2026-06-03 against `main`.
+> Context: app has been through 11 versions. Dev runs on **SQLite (Windows)**;
+> production is mid-migration to **PostgreSQL**. Six modules: Mix Calculator,
+> Product Costing, Editor, Throughput, Reporting, Settings.
+>
+> Decisions already taken:
+> - **Migrations:** adopt **Alembic** (replaces the startup `create_all` + ad-hoc `ALTER` scheme).
+> - **Approach:** full audit first (this document), then execute in phases.
+
+---
+
+## Findings, ranked by severity
+
+### P0 — correctness / data integrity
+
+#### P0.1 — Money is stored as `Float` everywhere
+Every cost / price / margin column is SQLAlchemy `Float`:
+
+- `backend/app/models/product_costing.py` — `cleaned_product_cost_per_kg`, `grading_cost_per_kg`,
+  `bagging_cost_per_kg`, `cracking_cost_per_kg`, `bag_cost_per_unit`, `freight_cost_per_unit`,
+  `finished_product_delivered_cost`, `distributor_price`, `wholesale_price`, `cost_per_kg`,
+  `distributor_margin`, `wholesale_margin`, `cost`, …
+- `backend/app/models/assumption.py` — `grading_cost`, `bagging_cost`, `cracking_cost`,
+  `bag_cost`, `cost_per_unit`.
+- `backend/app/models/mix.py` — `quantity_kg`.
+- `backend/app/models/mix_calculator.py` — `batch_size_kg`, `total_bags`, `total_kg`,
+  `product_unit_size_kg`, `required_kg`, `mix_percentage`.
+- `backend/app/models/product.py` — `distributor_margin`, `wholesale_margin`, `quantity_kg`.
+
+**Why it matters:** for a costing-and-pricing tool, binary floating point introduces rounding
+drift in money. It is also a **SQLite ↔ Postgres divergence point** — SQLite stores loose floats,
+Postgres `Numeric` is exact, so the same calculation can produce different stored/displayed values
+across environments.
+
+**Fix:** migrate money/quantity columns to `Numeric(12, 4)` (tune precision/scale per field) and use
+`Decimal` in the calculation engine. Guard with the existing formula-parity tests.
+
+#### P0.2 — Frontend silently shows mock data when the API fails
+`frontend/src/lib/api.ts` → `fetchJson(path, fallback, ...)` returns the `fallback` (mock data) on
+**any** fetch error:
+
+- `api.ts:151` and `api.ts:158` — `return fallback;` on failure.
+- Fallbacks are real mock datasets: `mockRawMaterials`, `mockCosts`, `mockProducts`, `mockMixes`,
+  `mockScenarios`, `mockMixCalculatorOptions`, `mockMixCalculatorSessions`, `mockClientAccess` —
+  imported from `$lib/mock` (`api.ts:4-13`, used at `api.ts:296+`).
+
+**Why it matters:** a backend hiccup makes the UI display **fabricated prices/costs** with no error
+shown to the user. In a pricing application this is the most dangerous item in this audit — a user
+could quote or decide off fake numbers.
+
+**Fix:** remove the mock-on-error fallback path. Surface real API errors in the UI (error/empty
+states). Keep `mock.ts` for tests only.
+
+#### P0.3 — Schema management is `create_all` + ad-hoc `ALTER`, no versioning
+`backend/app/db/migrations.py` runs on **every startup** via `bootstrap_schema()`
+(`backend/app/main.py:105`, inside `ensure_database_ready()`):
+
+- `ensure_metadata_tables()` → `metadata.create_all()` for any missing tables.
+- `ensure_tenant_columns()` → adds `tenant_id` to a hardcoded `TENANT_TABLES` list.
+- `ensure_legacy_columns()` → a hand-maintained `_LEGACY_COLUMN_PATCHES` tuple of
+  `ALTER TABLE ... ADD COLUMN` statements.
+- `sync_tenant_ids()` → ~250 lines of near-identical `UPDATE` backfills.
+- `sync_product_visibility()` → data backfill.
+
+**Why it matters:** this can only **create tables and add columns**. It can never change a column
+type, add an index / constraint / FK, drop a column, or do a NOT-NULL backfill in a controlled way.
+A fresh Postgres gets the *current* model via `create_all`, while an upgraded SQLite has columns
+bolted on by `ALTER` in whatever order/type they accreted — the two **drift apart silently**, and
+SQLite's loose typing hides mismatches until production. Across 11 versions the only escape hatch
+has been appending more manual patches (unbounded, fragile).
+
+The one-shot SQLite→Postgres move (`deploy/migrate-to-postgres.sh`) uses
+`SET session_replication_role` and manual sequence resets — fine for a single cutover, but not a
+repeatable/testable migration path.
+
+**Fix:** adopt **Alembic** (see Phase 1).
+
+---
+
+### P1 — maintainability
+
+#### P1.1 — Copy-pasted helpers, no shared util
+No shared formatting/number module. Duplicated implementations:
+
+- `formatDate` — **9** files: `lib/components/ClientAccessWorkspace.svelte`,
+  `lib/components/mix-calculator/MixCalculatorResultsPanel.svelte`,
+  `lib/components/MixCalculatorPrintDocument.svelte`, `routes/+page.svelte`,
+  `routes/admin/+page.svelte`, `routes/client-access/+page.svelte`,
+  `routes/mix-calculator/+page.svelte`, `routes/raw-materials/+page.svelte`,
+  `routes/throughput/+page.svelte`.
+- `formatNumber` — **5** files: `lib/components/mix-calculator/MixCalculatorEditor.svelte`,
+  `lib/components/mix-calculator/MixCalculatorResultsPanel.svelte`,
+  `lib/components/MixCalculatorPrintDocument.svelte`, `routes/mix-calculator/+page.svelte`,
+  `routes/throughput/+page.svelte`.
+- `toNum` — **2** files: `routes/throughput/+page.svelte`, `routes/throughput/add/+page.svelte`.
+
+**Symptom already hit:** the `toNum` `value.trim is not a function` bug (Svelte coerces
+`<input type="number">` bindings to `number`/`null`, not `string`). Fixed in both files
+2026-06-03, but this class of bug will recur until there is a single source of truth.
+
+**Fix:** add `frontend/src/lib/format.ts` (`formatDate`, `formatNumber`, `formatCurrency`, `toNum`)
+and replace the duplicates.
+
+#### P1.2 — Monolith route files
+Largest route components (LOC):
+
+| File | LOC |
+| --- | --- |
+| `routes/+page.svelte` (dashboard) | 2238 |
+| `routes/product-costing/+page.svelte` | 1557 |
+| `routes/throughput/+page.svelte` | 1232 |
+| `routes/editor/+page.svelte` | 1163 |
+| `routes/raw-materials/+page.svelte` | 1062 |
+| `routes/client-access/+page.svelte` | 851 |
+| `routes/reporting/+page.svelte` | 518 |
+
+**Why it matters:** hard to test, hard to change safely, encourages more copy-paste.
+
+**Fix:** decompose incrementally — extract components and `+page.ts` load logic. Dashboard and
+product-costing first.
+
+#### P1.3 — `migrations.py` conflates DDL + data backfill
+Schema DDL (`ensure_*`) and data backfill (`sync_*`) live in one module, including ~250 lines of
+near-identical `UPDATE` blocks in `sync_tenant_ids()`. Alembic will absorb most of this into
+versioned schema steps + explicit data-migration steps.
+
+---
+
+### P2 — hygiene
+
+- **P2.1** — `backend/tests/_repro_throughput_post.py` is a debug repro, not a real test. Remove.
+- **P2.2** — ~20 `TODO`/`FIXME`/legacy markers across `backend/app` and `frontend/src`. Triage and burn down.
+- **P2.3** — `backend/app/seed.py` is 1325 LOC. Split by module.
+- **P2.4** — `CLAUDE.md` still says "PostgreSQL recommended / SQLite acceptable only for prototype",
+  stale vs the live Postgres migration. Refresh.
+
+---
+
+## P0.4 — Three overlapping authentication / user-type systems
+
+The app has accreted **three separate auth systems**, with **two cookies**, **three login
+endpoints**, **three role namespaces**, and two parallel permission models. They overlap awkwardly
+and one of them is already dead in the UI. This is the single largest piece of structural debt in
+the codebase.
+
+### The three systems
+
+**1. Internal / "lean" system** — `users` / `roles` / `permissions` / `role_permissions`
+- Code: `app/core/access.py`, `app/models/access.py`, `app/api/access.py` (`/api/access/*`),
+  `app/seed_access.py`.
+- Per-user password hash (`User.password_hash`, PBKDF2). Role → permission keys
+  (`view_raw_materials`, `edit_products`, …). Fail-closed `require_permission(...)` dependencies.
+- Token carries `sub=INTERNAL_USER_SUBJECT`; session `role="internal"`.
+- Tenant is **hardcoded** to a constant: `INTERNAL_USER_TENANT_ID = "hunter-premium-produce"`
+  (`core/access.py:37`).
+- Uses `CLIENT_AUTH_COOKIE`.
+- **This is the actual primary login.** The root page (`routes/+page.svelte:57`) calls
+  `api.internalLogin()` → `/api/access/login`.
+
+**2. Client-portal system** — `client_accounts` / `client_users` / `client_feature_access` /
+   `client_user_module_permissions` / `client_access_audit_events`
+- Code: `app/models/client_access.py`, `app/services/client_access_service.py`,
+  `app/api/auth.py` (`/api/auth/client/*`), `app/api/client_access.py`.
+- **Multi-tenant** (`tenant_id` on every table), per-account feature flags, per-user module
+  access levels (`none`/`view`/`edit`/`manage`), `client_role` in {superadmin, admin, viewer, …}.
+- Session `role="client"`. Uses `CLIENT_AUTH_COOKIE`.
+- **Authentication is broken-by-design: a single shared password.** `client_login` checks
+  `payload.password != settings.client_password` (`api/auth.py:79`) — *one* password for *all*
+  client users; the per-user record only supplies identity, not a credential.
+- **The login UI is dead.** `api.clientLogin` is referenced only by `api.ts` (definition) and
+  `api.test.ts` — no component calls it. The endpoints, tables, tenant plumbing, and the
+  `require_client_session` / `module_access_map` path are all still live and still wired into the
+  shared route dependencies.
+
+**3. Admin system** — environment-variable single credential
+- Code: `app/api/auth.py` (`/api/auth/admin/*`), `require_admin_session` in `app/api/deps.py`.
+- No DB row. Authenticates against `settings.admin_email` / `settings.admin_password`.
+  Session `role="admin"` → **blanket access** (`session.ts:105` `hasModuleAccess` returns `true`
+  for admin; `require_admin_session` gates the admin-only routes).
+- Uses a **second cookie**, `ADMIN_AUTH_COOKIE`.
+- Drives the separate `/admin` + `/admin/client-access` UI (`routes/admin/+page.svelte` calls
+  `api.adminLogin()`), which exists to manage client users / feature flags / Power BI preview —
+  i.e. the "management behind the scenes" layer we no longer want.
+
+### How they tangle
+
+- **Frontend** routes by URL: `/admin*` → `AdminShell`, everything else → `ClientShell`
+  (`routes/+layout.svelte:15,42-49`). Two `localStorage` session stores
+  (`data-entry-app-client-session`, `data-entry-app-admin-session`) in `session.ts`.
+- **Shared route deps bend to accept two token shapes.** `require_client_session` and
+  `require_client_module_access` (`api/deps.py:97-184`) special-case `role=="internal"` to skip the
+  `ClientUser` DB lookup and read permissions from a role-derived map, while still supporting
+  `role=="client"`. `core/access.py:_PERMISSION_TO_MODULE_LEVEL` exists purely to translate the
+  internal permission keys into the legacy client module/level shape so the same routes accept both.
+- **Two permission models run in parallel**: role→permission-keys (internal) vs
+  per-user module→access-level rows + per-account feature flags (client). `permissions_to_module_map`
+  bridges them.
+- **`tenant_id` is smeared across ~25 tables and ~25 backend files** (heaviest:
+  `db/migrations.py` 70 refs, `seed.py` 52, `api/product_costing.py` 36, plus every service/model),
+  for multi-tenancy we no longer want.
+
+### Target architecture (per product direction)
+
+> One login for everyone. User type `lean` = full access. `client` = its own permissions.
+> No multi-tenant. No separate behind-the-scenes management app, except `lean` may have a few
+> extra settings (e.g. change logo).
+
+- **One login endpoint + one login page** for all users.
+- **One user store**: keep `users` / `roles` / `permissions` / `role_permissions`. Everyone is a
+  `User` with a role. Add a **`lean`** role = all permissions (full access, including the extra
+  settings like logo). Define a **`client`** role with its own permission set. Operations etc. stay
+  as additional roles.
+- **One cookie**, one session shape, one frontend session store.
+- **Remove multi-tenancy**: drop `tenant_id` from models/queries/migrations/seed; collapse to a
+  single implicit tenant.
+- **Retire the env-var admin login** and the **dead client-portal login** + its tables/service,
+  folding any still-needed capability (e.g. managing users) into permission-gated routes inside the
+  single app. `lean`-only settings (logo, etc.) become permission-gated, not a separate shell.
+
+### Decoupling / migration approach (proposed)
+
+1. **Confirm the dead path is dead** (done: `clientLogin` has no UI caller) and snapshot any client
+   data worth keeping (`client_users`, module permissions) so it can be re-expressed as `users` +
+   `roles` if needed.
+2. **Unify on the `users`/`roles`/`permissions` model.** Introduce `lean` and `client` roles in
+   `seed_access.py` with the right permission sets. Migrate any real client users into `users`.
+3. **Single login**: make `/api/access/login` the only login; one cookie; one session store; one
+   login page. Remove `/api/auth/admin/*`, `/api/auth/client/*`, `ADMIN_AUTH_COOKIE`, the
+   admin/client localStorage split, and the `/admin*` shell routing (fold any surviving admin
+   screens into permission-gated routes in the main app).
+4. **Collapse the dual permission model**: drop `_PERMISSION_TO_MODULE_LEVEL` bridging and the
+   `role=="internal"` / `role=="client"` special-casing in `deps.py`; every route depends on
+   `require_permission(...)` (or a thin module-level wrapper) only.
+5. **Drop multi-tenancy**: Alembic migration removing `tenant_id` columns (or leaving them nullable
+   and unused first, then dropping), plus removing `tenant_id` filters from services/queries and the
+   `sync_tenant_ids` backfill. **Sequence this on top of Phase 1 (Alembic)** so the column drops are
+   versioned and run identically on SQLite and Postgres.
+6. **Delete the client-portal subsystem** once nothing references it: `models/client_access.py`,
+   `client_access_service.py`, `api/auth.py`, `api/client_access.py`, related schemas, and the
+   `ClientShell`/`AdminShell` split.
+
+### Risk notes
+
+- This touches **authentication** — stage it carefully behind tests; do not delete the old endpoints
+  until the unified login is proven in dev against both SQLite and (a Postgres copy of) prod.
+- The shared password (`P0.4`/system 2) and the env-admin credential should be considered a
+  **security cleanup**, not just structure: per-user hashed passwords for everyone is the target.
+- Dropping `tenant_id` is irreversible data-wise — do it as a dedicated, reviewed Alembic step with
+  a backup, after the login unification has settled.
+
+---
+
+## Remediation plan (phased)
+
+### Phase 0 — Safety net (no behavior change)
+- Add a schema-parity smoke test: fresh-SQLite `create_all` vs `Base.metadata` so later phases
+  cannot silently drift.
+- Remove `backend/tests/_repro_throughput_post.py`.
+
+### Phase 1 — Adopt Alembic  *(foundation; most moving parts)*
+- Add `alembic` to `backend/pyproject.toml`; `alembic init`.
+- Wire `env.py` to read `DATABASE_URL` (via `app.core.config.settings`) and `Base.metadata`.
+- **Critical for this setup:** enable `render_as_batch=True` so `ALTER` works on **SQLite (Windows dev)**;
+  Postgres handles `ALTER` natively.
+- Autogenerate a **`0001_baseline`** migration from current models.
+- `alembic stamp 0001_baseline` on existing dev **and** prod DBs so they are recognized without rebuilding.
+- Fold `_LEGACY_COLUMN_PATCHES`, `sync_tenant_ids`, and `sync_product_visibility` into versioned
+  migrations (schema steps + explicit data-migration steps).
+- Replace the startup `bootstrap_schema(...)` call (`main.py:105`) with `alembic upgrade head`
+  (or an explicit deploy step).
+- Update `deploy/migrate-to-postgres.sh` **Phase 5** to run `alembic upgrade head` instead of
+  calling `bootstrap_schema`.
+
+### Phase 2 — Money correctness
+- `Float → Numeric(12, 4)` (tune per field) across the money/quantity columns listed in P0.1.
+- Use `Decimal` in `services/costing_engine.py` and `services/product_costing_service.py`.
+- Dedicated Alembic migration; guard with `tests/test_costing_engine.py` formula-parity tests.
+
+### Phase 3 — Frontend shared utils
+- New `frontend/src/lib/format.ts`: `formatDate`, `formatNumber`, `formatCurrency`, `toNum`.
+- Replace the 9 / 5 / 2 duplicate implementations. Eliminates the `toNum`-style bug class.
+
+### Phase 4 — Remove mock-on-error fallback  *(quick, high-value correctness fix)*
+- Remove the `fallback` return path in `api.ts` `fetchJson`.
+- Surface real API errors / empty states in the UI.
+- Keep `mock.ts` for tests only.
+
+### Phase 5 — Unify authentication & user types  *(addresses P0.4; large, cross-cutting)*
+Sits on top of Phase 1 (Alembic) because the column drops must be versioned. Order within the phase:
+1. Snapshot/migrate any real client users into `users` + `roles`; add `lean` and `client` roles in
+   `seed_access.py`.
+2. Single login: make `/api/access/login` the only login; one cookie; one session store; one login
+   page. Remove `/api/auth/admin/*`, `/api/auth/client/*`, `ADMIN_AUTH_COOKIE`, and the `/admin*`
+   shell split.
+3. Collapse the dual permission model — every route on `require_permission(...)`; delete the
+   `internal`/`client` special-casing and `_PERMISSION_TO_MODULE_LEVEL` bridge in `deps.py`/`access.py`.
+4. Drop multi-tenancy (`tenant_id`) via a dedicated Alembic migration + query cleanup; remove
+   `sync_tenant_ids`.
+5. Delete the dead client-portal subsystem (`models/client_access.py`, `client_access_service.py`,
+   `api/auth.py`, `api/client_access.py`, `AdminShell`).
+6. `lean`-only extras (logo change, etc.) become permission-gated settings in the single app.
+
+### Phase 6 — Decompose monolith routes
+- Incrementally extract components + `+page.ts` load logic. Start with dashboard (`+page.svelte`)
+  and product-costing.
+
+### Phase 7 — Hygiene
+- Burn down `TODO`/legacy markers.
+- Split `seed.py` by module.
+- Refresh `CLAUDE.md` DB guidance.
+
+---
+
+## Suggested sequencing note
+Phase 1 (Alembic) is the foundation the SQLite-dev / Postgres-prod split most depends on. However,
+**Phase 4 (mock-on-error)** is the scariest correctness bug and a ~20-minute fix — a reasonable
+quick win to do first, before Phase 1.
+
+## Progress log
+- 2026-06-03 — Audit completed; plan written. `toNum` bug fixed in
+  `routes/throughput/+page.svelte` and `routes/throughput/add/+page.svelte` (precursor to Phase 3).
+- 2026-06-03 — Auth/user-type investigation added (P0.4 + Phase 5). Found three overlapping auth
+  systems; the client-portal login (`/api/auth/client/login`, shared password) is already dead in
+  the UI (`clientLogin` has no component caller). Target: single login, `lean`/`client` roles, no
+  multi-tenant, no separate admin shell.
+- 2026-06-04 — Phase 4 quick win started: removed production `api.ts` mock-on-error fallback so
+  failed reads throw normalized API errors instead of returning fabricated mock pricing/costing data.
+  Removed `backend/tests/_repro_throughput_post.py` debug repro file.
+- 2026-06-04 — Phase 0 safety net started: added a fresh SQLite schema smoke test that checks
+  model metadata tables and columns are created as declared.
+- 2026-06-04 — Phase 3 shared utils started: added `frontend/src/lib/format.ts`, covered it with
+  unit tests, and replaced the duplicated `toNum` helper plus the mix-calculator/throughput number
+  and date formatters touched in recent work.

backend/app/api/dashboard.py

@@ -7,6 +7,9 @@ breakdowns, scenarios, data-quality) and only used summaries from each.
 """
 from __future__ import annotations
 
+from datetime import date
+import json
+
 from fastapi import APIRouter, Depends
 from sqlalchemy import select
 from sqlalchemy.orm import Session, selectinload
@@ -15,7 +18,9 @@ from app.api.deps import AuthSession, require_client_module_access
 from app.db.session import get_db
 from app.models.mix import Mix
 from app.models.product import Product
+from app.models.product_costing import ProductCostItem
 from app.models.raw_material import RawMaterial
+from app.models.throughput import ProductionThroughput, ThroughputProduct
 from app.services.client_access_service import has_access_level
 from app.services.costing_engine import (
     calculate_mix_cost,
@@ -33,6 +38,166 @@ def _can(session: AuthSession, module_key: str) -> bool:
     return has_access_level(permissions.get(module_key), "view")
 
 
+def _month_start(today: date) -> date:
+    return today.replace(day=1)
+
+
+def _warnings(item: ProductCostItem) -> list[str]:
+    if not item.warnings:
+        return []
+    try:
+        parsed = json.loads(item.warnings)
+        return parsed if isinstance(parsed, list) else [str(parsed)]
+    except json.JSONDecodeError:
+        return [item.warnings]
+
+
+def _pricing_key(value: str | None) -> str:
+    return (value or "").strip().lower()
+
+
+def _find_pricing_item(
+    entry: ProductionThroughput,
+    product: ThroughputProduct | None,
+    by_item_id: dict[str, ProductCostItem],
+    by_name: dict[str, ProductCostItem],
+) -> ProductCostItem | None:
+    if product and product.item_id and product.item_id in by_item_id:
+        return by_item_id[product.item_id]
+    return by_name.get(_pricing_key(entry.product_name_snapshot)) or by_name.get(_pricing_key(product.name if product else None))
+
+
+def _operations_summary(session: AuthSession, db: Session) -> dict | None:
+    if not (_can(session, "operations_throughput") or _can(session, "products") or _can(session, "dashboard")):
+        return None
+
+    today = date.today()
+    start = _month_start(today)
+    entries = db.scalars(
+        select(ProductionThroughput)
+        .where(
+            ProductionThroughput.tenant_id == session.tenant_id,
+            ProductionThroughput.production_date >= start,
+            ProductionThroughput.production_date <= today,
+        )
+        .options(selectinload(ProductionThroughput.product))
+        .order_by(ProductionThroughput.production_date.desc())
+    ).all()
+    pricing_items = db.scalars(select(ProductCostItem).where(ProductCostItem.tenant_id == session.tenant_id)).all()
+    by_item_id = {item.item_id: item for item in pricing_items if item.item_id}
+    by_name: dict[str, ProductCostItem] = {}
+    for item in pricing_items:
+        by_name.setdefault(_pricing_key(item.product_name), item)
+        by_name.setdefault(_pricing_key(item.mix_product_name), item)
+
+    product_totals: dict[str, dict] = {}
+    client_totals: dict[str, float] = {}
+    produced_not_priced: dict[str, dict] = {}
+    total_kg = 0.0
+    total_bags = 0.0
+    estimated_wholesale_value = 0.0
+    wholesale_rows = 0
+
+    for entry in entries:
+        kg = entry.calculated_kg or 0.0
+        bags = entry.quantity if entry.quantity_type == "bags" else 0.0
+        total_kg += kg
+        total_bags += bags
+
+        product = entry.product
+        name = entry.product_name_snapshot or product.name if product else entry.product_name_snapshot
+        bucket = product_totals.setdefault(
+            name,
+            {"product_name": name, "client_name": product.client_name if product else None, "kg": 0.0, "bags": 0.0, "entries": 0},
+        )
+        bucket["kg"] += kg
+        bucket["bags"] += bags
+        bucket["entries"] += 1
+
+        client = product.client_name if product and product.client_name else "Unassigned"
+        client_totals[client] = client_totals.get(client, 0.0) + kg
+
+        pricing = _find_pricing_item(entry, product, by_item_id, by_name)
+        pricing_warnings = _warnings(pricing) if pricing else ["Missing product pricing"]
+        wholesale_price = pricing.wholesale_price if pricing else None
+        unit_kg = pricing.unit_kg if pricing else None
+        if wholesale_price is not None:
+            units = kg / unit_kg if unit_kg and unit_kg > 0 else entry.quantity
+            estimated_wholesale_value += units * wholesale_price
+            wholesale_rows += 1
+        if pricing is None or pricing_warnings or wholesale_price is None:
+            missing = produced_not_priced.setdefault(
+                name,
+                {
+                    "product_name": name,
+                    "kg": 0.0,
+                    "status": "Missing pricing" if pricing is None else "Needs review",
+                    "warnings": pricing_warnings[:2],
+                },
+            )
+            missing["kg"] += kg
+
+    issue_counts = {
+        "missing_lookup": 0,
+        "missing_unit_kg": 0,
+        "missing_pallet_qty": 0,
+        "missing_price": 0,
+        "invalid_margin": 0,
+    }
+    for item in pricing_items:
+        warnings = " ".join(_warnings(item)).lower()
+        if "lookup" in warnings:
+            issue_counts["missing_lookup"] += 1
+        if "unit kg" in warnings:
+            issue_counts["missing_unit_kg"] += 1
+        if "pallet" in warnings:
+            issue_counts["missing_pallet_qty"] += 1
+        if item.distributor_price is None or item.wholesale_price is None:
+            issue_counts["missing_price"] += 1
+        if "margin" in warnings:
+            issue_counts["invalid_margin"] += 1
+
+    top_products = sorted(product_totals.values(), key=lambda row: row["kg"], reverse=True)[:5]
+    clients = [
+        {"client_name": client, "kg": round(kg, 2)}
+        for client, kg in sorted(client_totals.items(), key=lambda item: item[1], reverse=True)[:5]
+    ]
+    produced_not_priced_rows = sorted(produced_not_priced.values(), key=lambda row: row["kg"], reverse=True)[:5]
+
+    return {
+        "period_label": "This month",
+        "total_kg": round(total_kg, 2),
+        "total_bags": round(total_bags, 2),
+        "entry_count": len(entries),
+        "estimated_wholesale_value": round(estimated_wholesale_value, 2),
+        "priced_entry_count": wholesale_rows,
+        "top_products": [
+            {
+                "product_name": row["product_name"],
+                "client_name": row["client_name"],
+                "kg": round(row["kg"], 2),
+                "bags": round(row["bags"], 2),
+                "entries": row["entries"],
+            }
+            for row in top_products
+        ],
+        "client_totals": clients,
+        "pricing_issues": {
+            **issue_counts,
+            "total": sum(issue_counts.values()),
+        },
+        "produced_not_priced": [
+            {
+                "product_name": row["product_name"],
+                "kg": round(row["kg"], 2),
+                "status": row["status"],
+                "warnings": row["warnings"],
+            }
+            for row in produced_not_priced_rows
+        ],
+    }
+
+
 @router.get("/summary")
 def dashboard_summary(
     session: AuthSession = Depends(require_client_module_access("dashboard")),
@@ -44,6 +209,7 @@ def dashboard_summary(
     raw_series: list[float] = []
     mix_series: list[float] = []
     product_series: list[float] = []
+    operations_summary = _operations_summary(session, db)
 
     if _can(session, "raw_materials") or _can(session, "dashboard"):
         materials = db.scalars(
@@ -147,4 +313,5 @@ def dashboard_summary(
             "mix_cost_per_kg": mix_series,
             "product_finished_delivered": product_series,
         },
+        "operations": operations_summary,
     }

backend/app/api/product_costing.py

@@ -0,0 +1,247 @@
+from fastapi import APIRouter, Depends, HTTPException, Query, status
+from sqlalchemy import or_, select
+from sqlalchemy.orm import Session
+
+from app.api.deps import AuthSession, require_client_module_access
+from app.db.session import get_db
+from app.models.product_costing import (
+    ProductCostBagInput,
+    ProductCostBaseInput,
+    ProductCostClientInput,
+    ProductCostFreightInput,
+    ProductCostItem,
+    ProductCostProcessInput,
+)
+from app.schemas.product_costing import (
+    ProductCostInputsRead,
+    ProductCostInputsUpdate,
+    ProductCostItemCreate,
+    ProductCostItemRead,
+    ProductCostItemUpdate,
+    ProductCostRecalculateAllRead,
+)
+from app.services.product_costing_service import (
+    BAG_INPUTS,
+    FREIGHT_INPUTS,
+    PROCESS_NAMES,
+    recalculate_all_product_cost_items,
+    recalculate_product_cost_item,
+    serialize_product_cost_item,
+)
+
+router = APIRouter(prefix="/api/product-costing", tags=["product-costing"])
+
+
+def _load_item(db: Session, tenant_id: str, item_id: int) -> ProductCostItem | None:
+    return db.scalar(select(ProductCostItem).where(ProductCostItem.id == item_id, ProductCostItem.tenant_id == tenant_id))
+
+
+def _ensure_inputs(db: Session, tenant_id: str) -> ProductCostBaseInput:
+    base = db.scalar(select(ProductCostBaseInput).where(ProductCostBaseInput.tenant_id == tenant_id))
+    if base is None:
+        base = ProductCostBaseInput(tenant_id=tenant_id)
+        db.add(base)
+        db.flush()
+    for process_name in PROCESS_NAMES:
+        if db.scalar(select(ProductCostProcessInput.id).where(ProductCostProcessInput.tenant_id == tenant_id, ProductCostProcessInput.process_name == process_name)) is None:
+            db.add(ProductCostProcessInput(tenant_id=tenant_id, process_name=process_name, cost_per_kg=0.0))
+    for key, label in BAG_INPUTS.items():
+        if db.scalar(select(ProductCostBagInput.id).where(ProductCostBagInput.tenant_id == tenant_id, ProductCostBagInput.input_key == key)) is None:
+            db.add(ProductCostBagInput(tenant_id=tenant_id, input_key=key, label=label, cost=0.0))
+    for key, label in FREIGHT_INPUTS.items():
+        if db.scalar(select(ProductCostFreightInput.id).where(ProductCostFreightInput.tenant_id == tenant_id, ProductCostFreightInput.input_key == key)) is None:
+            db.add(ProductCostFreightInput(tenant_id=tenant_id, input_key=key, label=label, cost=0.0))
+    db.flush()
+    return base
+
+
+def _serialize_inputs(db: Session, tenant_id: str) -> dict:
+    base = _ensure_inputs(db, tenant_id)
+    return {
+        "base": {
+            "grading_per_tonne": base.grading_per_tonne,
+            "grading_per_kg": base.grading_per_kg,
+            "cracking_per_tonne": base.cracking_per_tonne,
+            "cracking_per_kg": base.cracking_per_kg,
+        },
+        "processes": [
+            {"key": row.process_name, "label": row.process_name, "cost": row.cost_per_kg}
+            for row in db.scalars(select(ProductCostProcessInput).where(ProductCostProcessInput.tenant_id == tenant_id).order_by(ProductCostProcessInput.process_name)).all()
+        ],
+        "clients": [
+            {
+                "client_category": row.client_category,
+                "distributor_margin": row.distributor_margin,
+                "wholesale_margin": row.wholesale_margin,
+            }
+            for row in db.scalars(select(ProductCostClientInput).where(ProductCostClientInput.tenant_id == tenant_id).order_by(ProductCostClientInput.client_category)).all()
+        ],
+        "bags": [
+            {"key": row.input_key, "label": row.label, "cost": row.cost}
+            for row in db.scalars(select(ProductCostBagInput).where(ProductCostBagInput.tenant_id == tenant_id).order_by(ProductCostBagInput.input_key)).all()
+        ],
+        "freight": [
+            {"key": row.input_key, "label": row.label, "cost": row.cost}
+            for row in db.scalars(select(ProductCostFreightInput).where(ProductCostFreightInput.tenant_id == tenant_id).order_by(ProductCostFreightInput.input_key)).all()
+        ],
+    }
+
+
+@router.get("/items", response_model=list[ProductCostItemRead])
+def list_product_cost_items(
+    q: str | None = Query(default=None),
+    client_category: str | None = Query(default=None),
+    limit: int = Query(default=250, ge=1, le=1000),
+    session: AuthSession = Depends(require_client_module_access("products")),
+    db: Session = Depends(get_db),
+):
+    statement = select(ProductCostItem).where(ProductCostItem.tenant_id == session.tenant_id)
+    if client_category:
+        statement = statement.where(ProductCostItem.client_category == client_category)
+    if q:
+        term = f"%{q}%"
+        statement = statement.where(
+            or_(
+                ProductCostItem.client_category.ilike(term),
+                ProductCostItem.item_id.ilike(term),
+                ProductCostItem.product_name.ilike(term),
+                ProductCostItem.mix_product_name.ilike(term),
+            )
+        )
+    items = db.scalars(statement.order_by(ProductCostItem.client_category, ProductCostItem.product_name).limit(limit)).all()
+    return [serialize_product_cost_item(item) for item in items]
+
+
+@router.post("/items", response_model=ProductCostItemRead, status_code=status.HTTP_201_CREATED)
+def create_product_cost_item(
+    payload: ProductCostItemCreate,
+    session: AuthSession = Depends(require_client_module_access("products", "edit")),
+    db: Session = Depends(get_db),
+):
+    item = ProductCostItem(tenant_id=session.tenant_id or "default", **payload.model_dump())
+    db.add(item)
+    db.flush()
+    recalculate_product_cost_item(db, item)
+    db.commit()
+    db.refresh(item)
+    return serialize_product_cost_item(item)
+
+
+@router.get("/items/{item_id}", response_model=ProductCostItemRead)
+def get_product_cost_item(
+    item_id: int,
+    session: AuthSession = Depends(require_client_module_access("products")),
+    db: Session = Depends(get_db),
+):
+    item = _load_item(db, session.tenant_id or "default", item_id)
+    if item is None:
+        raise HTTPException(status_code=404, detail="Product cost item not found")
+    return serialize_product_cost_item(item)
+
+
+@router.patch("/items/{item_id}", response_model=ProductCostItemRead)
+def update_product_cost_item(
+    item_id: int,
+    payload: ProductCostItemUpdate,
+    session: AuthSession = Depends(require_client_module_access("products", "edit")),
+    db: Session = Depends(get_db),
+):
+    item = _load_item(db, session.tenant_id or "default", item_id)
+    if item is None:
+        raise HTTPException(status_code=404, detail="Product cost item not found")
+    for field, value in payload.model_dump(exclude_unset=True).items():
+        setattr(item, field, value)
+    recalculate_product_cost_item(db, item)
+    db.commit()
+    db.refresh(item)
+    return serialize_product_cost_item(item)
+
+
+@router.post("/items/{item_id}/recalculate", response_model=ProductCostItemRead)
+def recalculate_one(
+    item_id: int,
+    session: AuthSession = Depends(require_client_module_access("products", "edit")),
+    db: Session = Depends(get_db),
+):
+    item = _load_item(db, session.tenant_id or "default", item_id)
+    if item is None:
+        raise HTTPException(status_code=404, detail="Product cost item not found")
+    recalculate_product_cost_item(db, item)
+    db.commit()
+    db.refresh(item)
+    return serialize_product_cost_item(item)
+
+
+@router.post("/recalculate-all", response_model=ProductCostRecalculateAllRead)
+def recalculate_all(
+    session: AuthSession = Depends(require_client_module_access("products", "edit")),
+    db: Session = Depends(get_db),
+):
+    count = recalculate_all_product_cost_items(db, session.tenant_id or "default")
+    db.commit()
+    return {"recalculated": count}
+
+
+@router.get("/inputs", response_model=ProductCostInputsRead)
+def get_product_cost_inputs(
+    session: AuthSession = Depends(require_client_module_access("products")),
+    db: Session = Depends(get_db),
+):
+    return _serialize_inputs(db, session.tenant_id or "default")
+
+
+@router.patch("/inputs", response_model=ProductCostInputsRead)
+def update_product_cost_inputs(
+    payload: ProductCostInputsUpdate,
+    session: AuthSession = Depends(require_client_module_access("products", "edit")),
+    db: Session = Depends(get_db),
+):
+    tenant_id = session.tenant_id or "default"
+    base = _ensure_inputs(db, tenant_id)
+    if payload.base is not None:
+        for field, value in payload.base.model_dump().items():
+            setattr(base, field, value)
+
+    if payload.processes is not None:
+        existing = {row.process_name: row for row in db.scalars(select(ProductCostProcessInput).where(ProductCostProcessInput.tenant_id == tenant_id)).all()}
+        for row in payload.processes:
+            target = existing.get(row.key)
+            if target is None:
+                db.add(ProductCostProcessInput(tenant_id=tenant_id, process_name=row.key, cost_per_kg=row.cost))
+            else:
+                target.cost_per_kg = row.cost
+
+    if payload.clients is not None:
+        existing = {row.client_category: row for row in db.scalars(select(ProductCostClientInput).where(ProductCostClientInput.tenant_id == tenant_id)).all()}
+        for row in payload.clients:
+            target = existing.get(row.client_category)
+            if target is None:
+                db.add(ProductCostClientInput(tenant_id=tenant_id, client_category=row.client_category, distributor_margin=row.distributor_margin, wholesale_margin=row.wholesale_margin))
+            else:
+                target.distributor_margin = row.distributor_margin
+                target.wholesale_margin = row.wholesale_margin
+
+    if payload.bags is not None:
+        existing = {row.input_key: row for row in db.scalars(select(ProductCostBagInput).where(ProductCostBagInput.tenant_id == tenant_id)).all()}
+        for row in payload.bags:
+            target = existing.get(row.key)
+            if target is None:
+                db.add(ProductCostBagInput(tenant_id=tenant_id, input_key=row.key, label=row.label, cost=row.cost))
+            else:
+                target.label = row.label
+                target.cost = row.cost
+
+    if payload.freight is not None:
+        existing = {row.input_key: row for row in db.scalars(select(ProductCostFreightInput).where(ProductCostFreightInput.tenant_id == tenant_id)).all()}
+        for row in payload.freight:
+            target = existing.get(row.key)
+            if target is None:
+                db.add(ProductCostFreightInput(tenant_id=tenant_id, input_key=row.key, label=row.label, cost=row.cost))
+            else:
+                target.label = row.label
+                target.cost = row.cost
+
+    db.flush()
+    recalculate_all_product_cost_items(db, tenant_id)
+    db.commit()
+    return _serialize_inputs(db, tenant_id)

backend/app/core/config.py

@@ -62,7 +62,7 @@ class Settings:
     @classmethod
     def from_env(cls) -> "Settings":
         settings = cls(
-            app_name=os.getenv("APP_NAME", "Data Entry App API"),
+            app_name=os.getenv("APP_NAME", "Hunter App"),
             app_env=os.getenv("APP_ENV", os.getenv("ENVIRONMENT", "development")),
             host=os.getenv("HOST", "0.0.0.0"),
             port=int(os.getenv("PORT", "8000")),

backend/app/db/migrations.py

@@ -29,6 +29,12 @@ TENANT_TABLES = {
     "mix_calculator_sessions": None,
     "mix_calculator_session_lines": None,
     "products": None,
+    "product_cost_items": None,
+    "product_cost_base_inputs": None,
+    "product_cost_process_inputs": None,
+    "product_cost_client_inputs": None,
+    "product_cost_bag_inputs": None,
+    "product_cost_freight_inputs": None,
     "scenarios": None,
     "costing_results": None,
     "process_cost_rules": None,

backend/app/main.py

@@ -26,6 +26,7 @@ from app.api.editor import router as editor_router
 from app.api.mix_calculator import router as mix_calculator_router
 from app.api.mixes import router as mixes_router
 from app.api.powerbi import router as powerbi_router
+from app.api.product_costing import router as product_costing_router
 from app.api.products import router as products_router
 from app.api.raw_materials import router as raw_materials_router
 from app.api.scenarios import router as scenarios_router
@@ -199,6 +200,7 @@ app.include_router(editor_router)
 app.include_router(raw_materials_router)
 app.include_router(mixes_router)
 app.include_router(mix_calculator_router)
+app.include_router(product_costing_router)
 app.include_router(products_router)
 app.include_router(scenarios_router)
 app.include_router(throughput_router)

backend/app/models/__init__.py

@@ -4,6 +4,14 @@ from app.models.client_access import ClientAccessAuditEvent, ClientAccount, Clie
 from app.models.mix_calculator import MixCalculatorSession, MixCalculatorSessionLine
 from app.models.mix import Mix, MixIngredient
 from app.models.product import Product, ProductIngredient
+from app.models.product_costing import (
+    ProductCostBagInput,
+    ProductCostBaseInput,
+    ProductCostClientInput,
+    ProductCostFreightInput,
+    ProductCostItem,
+    ProductCostProcessInput,
+)
 from app.models.raw_material import RawMaterial, RawMaterialPriceVersion
 from app.models.scenario import CostingResult, Scenario
 from app.models.throughput import ProductionThroughput, ThroughputProduct
@@ -24,6 +32,12 @@ __all__ = [
     "Permission",
     "ProcessCostRule",
     "Product",
+    "ProductCostBagInput",
+    "ProductCostBaseInput",
+    "ProductCostClientInput",
+    "ProductCostFreightInput",
+    "ProductCostItem",
+    "ProductCostProcessInput",
     "ProductIngredient",
     "ProductionThroughput",
     "ThroughputProduct",

backend/app/models/product_costing.py

@@ -0,0 +1,99 @@
+from __future__ import annotations
+
+from datetime import datetime
+
+from sqlalchemy import DateTime, Float, Integer, String, Text, UniqueConstraint
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.db.session import Base
+
+
+class ProductCostItem(Base):
+    __tablename__ = "product_cost_items"
+    __table_args__ = (UniqueConstraint("tenant_id", "item_id", name="uq_product_cost_item_tenant_item"),)
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    tenant_id: Mapped[str] = mapped_column(String(64), default="default", index=True)
+    client_category: Mapped[str] = mapped_column(String(255), index=True)
+    item_id: Mapped[str | None] = mapped_column(String(128), nullable=True, index=True)
+    product_name: Mapped[str] = mapped_column(String(255), index=True)
+    mix_product_name: Mapped[str] = mapped_column(String(255), index=True)
+    unit_type: Mapped[str] = mapped_column(String(32), default="Standard")
+    own_bag: Mapped[str | None] = mapped_column(String(32), nullable=True)
+    unit_kg: Mapped[float | None] = mapped_column(Float, nullable=True)
+    items_per_pallet: Mapped[int | None] = mapped_column(Integer, nullable=True)
+    bagging_process: Mapped[str | None] = mapped_column(String(128), nullable=True)
+    manual_distributor_margin: Mapped[float | None] = mapped_column(Float, nullable=True)
+    manual_wholesale_margin: Mapped[float | None] = mapped_column(Float, nullable=True)
+
+    cleaned_product_cost_per_kg: Mapped[float | None] = mapped_column(Float, nullable=True)
+    grading_cost_per_kg: Mapped[float | None] = mapped_column(Float, nullable=True)
+    bagging_cost_per_kg: Mapped[float | None] = mapped_column(Float, nullable=True)
+    cracking_cost_per_kg: Mapped[float | None] = mapped_column(Float, nullable=True)
+    bag_cost_per_unit: Mapped[float | None] = mapped_column(Float, nullable=True)
+    freight_cost_per_unit: Mapped[float | None] = mapped_column(Float, nullable=True)
+    finished_product_delivered_cost: Mapped[float | None] = mapped_column(Float, nullable=True)
+    distributor_price: Mapped[float | None] = mapped_column(Float, nullable=True)
+    wholesale_price: Mapped[float | None] = mapped_column(Float, nullable=True)
+    warnings: Mapped[str | None] = mapped_column(Text, nullable=True)
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)
+    updated_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+
+class ProductCostBaseInput(Base):
+    __tablename__ = "product_cost_base_inputs"
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    tenant_id: Mapped[str] = mapped_column(String(64), default="default", unique=True, index=True)
+    grading_per_tonne: Mapped[float] = mapped_column(Float, default=0.0)
+    grading_per_kg: Mapped[float] = mapped_column(Float, default=0.0)
+    cracking_per_tonne: Mapped[float] = mapped_column(Float, default=0.0)
+    cracking_per_kg: Mapped[float] = mapped_column(Float, default=0.0)
+    updated_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+
+class ProductCostProcessInput(Base):
+    __tablename__ = "product_cost_process_inputs"
+    __table_args__ = (UniqueConstraint("tenant_id", "process_name", name="uq_product_cost_process_tenant_name"),)
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    tenant_id: Mapped[str] = mapped_column(String(64), default="default", index=True)
+    process_name: Mapped[str] = mapped_column(String(128), index=True)
+    cost_per_kg: Mapped[float] = mapped_column(Float, default=0.0)
+    updated_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+
+class ProductCostClientInput(Base):
+    __tablename__ = "product_cost_client_inputs"
+    __table_args__ = (UniqueConstraint("tenant_id", "client_category", name="uq_product_cost_client_tenant_name"),)
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    tenant_id: Mapped[str] = mapped_column(String(64), default="default", index=True)
+    client_category: Mapped[str] = mapped_column(String(255), index=True)
+    distributor_margin: Mapped[float | None] = mapped_column(Float, nullable=True)
+    wholesale_margin: Mapped[float | None] = mapped_column(Float, nullable=True)
+    updated_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+
+class ProductCostBagInput(Base):
+    __tablename__ = "product_cost_bag_inputs"
+    __table_args__ = (UniqueConstraint("tenant_id", "input_key", name="uq_product_cost_bag_tenant_key"),)
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    tenant_id: Mapped[str] = mapped_column(String(64), default="default", index=True)
+    input_key: Mapped[str] = mapped_column(String(64), index=True)
+    label: Mapped[str] = mapped_column(String(128))
+    cost: Mapped[float] = mapped_column(Float, default=0.0)
+    updated_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+
+class ProductCostFreightInput(Base):
+    __tablename__ = "product_cost_freight_inputs"
+    __table_args__ = (UniqueConstraint("tenant_id", "input_key", name="uq_product_cost_freight_tenant_key"),)
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    tenant_id: Mapped[str] = mapped_column(String(64), default="default", index=True)
+    input_key: Mapped[str] = mapped_column(String(64), index=True)
+    label: Mapped[str] = mapped_column(String(128))
+    cost: Mapped[float] = mapped_column(Float, default=0.0)
+    updated_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)

backend/app/schemas/product_costing.py

@@ -0,0 +1,97 @@
+from datetime import datetime
+
+from pydantic import BaseModel, ConfigDict, Field
+
+
+class ProductCostItemBase(BaseModel):
+    client_category: str = Field(min_length=1, max_length=255)
+    item_id: str | None = Field(default=None, max_length=128)
+    product_name: str = Field(min_length=1, max_length=255)
+    mix_product_name: str = Field(min_length=1, max_length=255)
+    unit_type: str = "Standard"
+    own_bag: str | None = None
+    unit_kg: float | None = Field(default=None, gt=0)
+    items_per_pallet: int | None = Field(default=None, gt=0)
+    bagging_process: str | None = Field(default=None, max_length=128)
+    manual_distributor_margin: float | None = Field(default=None, ge=0, lt=1)
+    manual_wholesale_margin: float | None = Field(default=None, ge=0, lt=1)
+
+
+class ProductCostItemCreate(ProductCostItemBase):
+    pass
+
+
+class ProductCostItemUpdate(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+    client_category: str | None = Field(default=None, min_length=1, max_length=255)
+    item_id: str | None = Field(default=None, max_length=128)
+    product_name: str | None = Field(default=None, min_length=1, max_length=255)
+    mix_product_name: str | None = Field(default=None, min_length=1, max_length=255)
+    unit_type: str | None = None
+    own_bag: str | None = None
+    unit_kg: float | None = Field(default=None, gt=0)
+    items_per_pallet: int | None = Field(default=None, gt=0)
+    bagging_process: str | None = Field(default=None, max_length=128)
+    manual_distributor_margin: float | None = Field(default=None, ge=0, lt=1)
+    manual_wholesale_margin: float | None = Field(default=None, ge=0, lt=1)
+
+
+class ProductCostItemRead(ProductCostItemBase):
+    id: int
+    tenant_id: str
+    cleaned_product_cost_per_kg: float | None
+    grading_cost_per_kg: float | None
+    bagging_cost_per_kg: float | None
+    cracking_cost_per_kg: float | None
+    bag_cost_per_unit: float | None
+    freight_cost_per_unit: float | None
+    finished_product_delivered_cost: float | None
+    distributor_price: float | None
+    wholesale_price: float | None
+    warnings: list[str]
+    created_at: datetime
+    updated_at: datetime
+
+
+class ProductCostBaseInputRead(BaseModel):
+    grading_per_tonne: float
+    grading_per_kg: float
+    cracking_per_tonne: float
+    cracking_per_kg: float
+
+
+class ProductCostBaseInputUpdate(ProductCostBaseInputRead):
+    pass
+
+
+class ProductCostNamedInputRead(BaseModel):
+    key: str
+    label: str
+    cost: float
+
+
+class ProductCostClientInputRead(BaseModel):
+    client_category: str
+    distributor_margin: float | None
+    wholesale_margin: float | None
+
+
+class ProductCostInputsRead(BaseModel):
+    base: ProductCostBaseInputRead
+    processes: list[ProductCostNamedInputRead]
+    clients: list[ProductCostClientInputRead]
+    bags: list[ProductCostNamedInputRead]
+    freight: list[ProductCostNamedInputRead]
+
+
+class ProductCostInputsUpdate(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+    base: ProductCostBaseInputUpdate | None = None
+    processes: list[ProductCostNamedInputRead] | None = None
+    clients: list[ProductCostClientInputRead] | None = None
+    bags: list[ProductCostNamedInputRead] | None = None
+    freight: list[ProductCostNamedInputRead] | None = None
+
+
+class ProductCostRecalculateAllRead(BaseModel):
+    recalculated: int

backend/app/seed.py

@@ -16,12 +16,26 @@ from app.models.assumption import FreightCostRule, PackagingCostRule, ProcessCos
 from app.models.client_access import ClientAccessAuditEvent, ClientAccount, ClientFeatureAccess, ClientUser, ClientUserModulePermission
 from app.models.mix import Mix, MixIngredient
 from app.models.product import Product, ProductIngredient
+from app.models.product_costing import (
+    ProductCostBagInput,
+    ProductCostBaseInput,
+    ProductCostClientInput,
+    ProductCostFreightInput,
+    ProductCostItem,
+    ProductCostProcessInput,
+)
 from app.models.raw_material import RawMaterial, RawMaterialPriceVersion
 from app.models.throughput import ProductionThroughput, ThroughputProduct
 from app.seed_access import seed_access
 from app.services.client_access_service import MODULE_CATALOG, default_access_level_for_role
 from app.services.throughput_service import import_workbook as import_throughput_workbook
 from app.services.throughput_service import resolve_workbook_path as resolve_throughput_workbook_path
+from app.services.product_costing_service import (
+    BAG_INPUTS,
+    FREIGHT_INPUTS,
+    PROCESS_NAMES,
+    recalculate_all_product_cost_items,
+)
 
 
 TENANT_ID = "hunter-premium-produce"
@@ -691,7 +705,36 @@ def _upsert_product_ingredients(
     for key, formula in product_ingredient_rows.items():
         matched_products = products_by_formula_key.get(key, [])
         if not matched_products:
-            continue
+            client_name, formula_name = key
+            mix_cache: dict[tuple[str, str], Mix] = {}
+            mix = _upsert_mix(
+                db,
+                client_name=client_name,
+                mix_name=formula_name,
+                ingredients=formula["ingredients"],
+                raw_material_map=raw_material_map,
+                mix_cache=mix_cache,
+            )
+            product = Product(
+                tenant_id=TENANT_ID,
+                client_name=client_name,
+                item_id=f"mix-calculator:{_slug(client_name, fallback='client')}:{_slug(formula_name, fallback='mix')}",
+                name=formula_name,
+                mix_id=mix.id,
+                sale_type="standard",
+                own_bag=True,
+                visible=True,
+                unit_of_measure="kg",
+                items_per_pallet=1,
+                bagging_process=None,
+                distributor_margin=None,
+                wholesale_margin=None,
+                notes="Seeded as a Mix Calculator source row from workbook formulas",
+            )
+            db.add(product)
+            db.flush()
+            products_by_formula_key[key] = [product]
+            matched_products = [product]
 
         for product in matched_products:
             existing_ingredients = {
@@ -1060,6 +1103,174 @@ def seed_throughput_products(db):
         return
 
 
+def _unit_type_from_product(product: Product) -> str:
+    sale_type = (product.sale_type or "").lower()
+    unit = (product.unit_of_measure or "").lower()
+    if sale_type == "bulka" or "bulka" in unit:
+        return "Bulka"
+    if "1.5kg" in unit or "1.5 kg" in unit:
+        return "1.5 kg"
+    if sale_type == "per_unit":
+        return "Per Unit"
+    return "Standard"
+
+
+def _own_bag_label(product: Product) -> str | None:
+    if product.own_bag:
+        return "No Bag" if "no bag" in (product.unit_of_measure or "").lower() else "Yes"
+    return None
+
+
+def seed_product_costing_module(db) -> dict[str, int]:
+    tenant_id = TENANT_ID
+    base = db.scalar(select(ProductCostBaseInput).where(ProductCostBaseInput.tenant_id == tenant_id))
+    if base is None:
+        process_rules = db.scalars(select(ProcessCostRule).where(ProcessCostRule.tenant_id == tenant_id)).all()
+        grading_per_kg = max((rule.grading_cost for rule in process_rules), default=0.0)
+        cracking_per_kg = max((rule.cracking_cost for rule in process_rules), default=0.0)
+        base = ProductCostBaseInput(
+            tenant_id=tenant_id,
+            grading_per_tonne=round(grading_per_kg * 1000, 4),
+            grading_per_kg=round(grading_per_kg, 4),
+            cracking_per_tonne=round(cracking_per_kg * 1000, 4),
+            cracking_per_kg=round(cracking_per_kg, 4),
+        )
+        db.add(base)
+
+    existing_processes = {
+        row.process_name: row
+        for row in db.scalars(select(ProductCostProcessInput).where(ProductCostProcessInput.tenant_id == tenant_id)).all()
+    }
+    process_rule_map = {
+        rule.process_name: rule
+        for rule in db.scalars(select(ProcessCostRule).where(ProcessCostRule.tenant_id == tenant_id)).all()
+    }
+    for process_name in PROCESS_NAMES:
+        if process_name in existing_processes:
+            continue
+        normalized_key = _build_process_key(process_name, 0.0, 0.0, 0.0)
+        rule = process_rule_map.get(normalized_key or process_name) or process_rule_map.get(process_name)
+        db.add(
+            ProductCostProcessInput(
+                tenant_id=tenant_id,
+                process_name=process_name,
+                cost_per_kg=round(rule.bagging_cost, 4) if rule else 0.0,
+            )
+        )
+    for process_name, rule in process_rule_map.items():
+        if process_name not in existing_processes:
+            db.add(
+                ProductCostProcessInput(
+                    tenant_id=tenant_id,
+                    process_name=process_name,
+                    cost_per_kg=round(rule.bagging_cost, 4),
+                )
+            )
+
+    bag_defaults = {
+        "20kg_bag": 0.0,
+        "bulka_bag": 0.0,
+        "own_bag_credit": 0.0,
+        "1_5kg_bagging": 0.0,
+        "peckish_bag": 0.0,
+    }
+    for rule in db.scalars(select(PackagingCostRule).where(PackagingCostRule.tenant_id == tenant_id)).all():
+        unit = (rule.unit_of_measure or "").lower()
+        if "1.5kg" in unit or "1.5 kg" in unit:
+            bag_defaults["1_5kg_bagging"] = max(bag_defaults["1_5kg_bagging"], rule.bag_cost)
+        elif "peckish" in unit:
+            bag_defaults["peckish_bag"] = max(bag_defaults["peckish_bag"], rule.bag_cost)
+        elif "bulka" in unit:
+            bag_defaults["bulka_bag"] = max(bag_defaults["bulka_bag"], rule.bag_cost)
+        elif "20kg" in unit:
+            bag_defaults["20kg_bag"] = max(bag_defaults["20kg_bag"], rule.bag_cost)
+
+    existing_bags = {
+        row.input_key
+        for row in db.scalars(select(ProductCostBagInput).where(ProductCostBagInput.tenant_id == tenant_id)).all()
+    }
+    for key, label in BAG_INPUTS.items():
+        if key not in existing_bags:
+            db.add(ProductCostBagInput(tenant_id=tenant_id, input_key=key, label=label, cost=round(bag_defaults.get(key, 0.0), 4)))
+
+    freight_defaults = {
+        "freight_per_pallet": 0.0,
+        "peckish_freight_per_pallet": 0.0,
+        "hay_straw_freight_per_pallet": 0.0,
+    }
+    for rule in db.scalars(select(FreightCostRule).where(FreightCostRule.tenant_id == tenant_id)).all():
+        unit = (rule.unit_of_measure or "").lower()
+        if "peckish" in unit:
+            freight_defaults["peckish_freight_per_pallet"] = max(freight_defaults["peckish_freight_per_pallet"], rule.cost_per_unit)
+        elif "hay" in unit or "straw" in unit:
+            freight_defaults["hay_straw_freight_per_pallet"] = max(freight_defaults["hay_straw_freight_per_pallet"], rule.cost_per_unit)
+        else:
+            freight_defaults["freight_per_pallet"] = max(freight_defaults["freight_per_pallet"], rule.cost_per_unit)
+
+    existing_freight = {
+        row.input_key
+        for row in db.scalars(select(ProductCostFreightInput).where(ProductCostFreightInput.tenant_id == tenant_id)).all()
+    }
+    for key, label in FREIGHT_INPUTS.items():
+        if key not in existing_freight:
+            db.add(ProductCostFreightInput(tenant_id=tenant_id, input_key=key, label=label, cost=round(freight_defaults.get(key, 0.0), 4)))
+
+    existing_clients = {
+        row.client_category
+        for row in db.scalars(select(ProductCostClientInput).where(ProductCostClientInput.tenant_id == tenant_id)).all()
+    }
+    products = db.scalars(select(Product).where(Product.tenant_id == tenant_id).options(selectinload(Product.mix))).all()
+    margins: dict[str, list[tuple[float | None, float | None]]] = {}
+    for product in products:
+        margins.setdefault(product.client_name, []).append((product.distributor_margin, product.wholesale_margin))
+    for client_name, rows in margins.items():
+        if client_name in existing_clients:
+            continue
+        distributor_values = [value for value, _ in rows if value is not None]
+        wholesale_values = [value for _, value in rows if value is not None]
+        db.add(
+            ProductCostClientInput(
+                tenant_id=tenant_id,
+                client_category=client_name,
+                distributor_margin=round(sum(distributor_values) / len(distributor_values), 6) if distributor_values else None,
+                wholesale_margin=round(sum(wholesale_values) / len(wholesale_values), 6) if wholesale_values else None,
+            )
+        )
+
+    existing_items = {
+        item.item_id: item
+        for item in db.scalars(select(ProductCostItem).where(ProductCostItem.tenant_id == tenant_id)).all()
+        if item.item_id
+    }
+    created = 0
+    for product in products:
+        if not product.item_id:
+            continue
+        item = existing_items.get(product.item_id)
+        if item is not None:
+            continue
+        item = ProductCostItem(
+            tenant_id=tenant_id,
+            client_category=product.client_name,
+            item_id=product.item_id,
+            product_name=product.name,
+            mix_product_name=product.mix.name if product.mix else product.name,
+            unit_type=_unit_type_from_product(product),
+            own_bag=_own_bag_label(product),
+            unit_kg=_infer_throughput_bag_size(product) or 1.0,
+            items_per_pallet=product.items_per_pallet,
+            bagging_process=product.bagging_process,
+            manual_distributor_margin=product.distributor_margin,
+            manual_wholesale_margin=product.wholesale_margin,
+        )
+        db.add(item)
+        created += 1
+
+    db.flush()
+    recalculated = recalculate_all_product_cost_items(db, tenant_id)
+    return {"created": created, "recalculated": recalculated}
+
+
 def seed_startup_basics():
     Base.metadata.create_all(bind=engine)
     with SessionLocal() as db:
@@ -1069,6 +1280,9 @@ def seed_startup_basics():
         report = seed_product_ingredients_from_workbook(db)
         if report["backfilled"]:
             logger.info("Product ingredients backfilled from workbook: %s", report)
+        product_costing_report = seed_product_costing_module(db)
+        if any(product_costing_report.values()):
+            logger.info("Product costing module seeded: %s", product_costing_report)
         db.commit()
 
 

backend/app/services/mix_calculator_pdf.py

@@ -239,7 +239,7 @@ def build_mix_calculator_pdf(session_record: MixCalculatorSession | dict) -> byt
         current_y,
         detail_width,
         detail_height,
-        "Product",
+        "Mix",
         session_record.product_name,
         value_font_size=12,
     )
@@ -251,7 +251,7 @@ def build_mix_calculator_pdf(session_record: MixCalculatorSession | dict) -> byt
         current_y,
         detail_width,
         detail_height,
-        "Mix source",
+        "Formula source",
         session_record.mix_name,
         value_font_size=11,
     )

backend/app/services/mix_calculator_service.py

@@ -76,6 +76,21 @@ def _fractional_bag_warning(batch_size_kg: float, total_bags: float, unit_of_mea
     )
 
 
+def _mix_calculator_label(product: Product) -> str:
+    return product.mix.name if product.mix else product.name
+
+
+def _mix_calculator_option_rank(product: Product) -> tuple[int, int, float, int]:
+    unit_label = (product.unit_of_measure or "").lower()
+    unit_size = extract_unit_quantity_kg(product.unit_of_measure)
+    return (
+        0 if abs(unit_size - 20) < 1e-9 and "bag" in unit_label and "bulka" not in unit_label else 1,
+        0 if "bulka" not in unit_label else 1,
+        unit_size if unit_size > 0 else 999999,
+        product.id,
+    )
+
+
 def calculate_mix_calculator_preview(
     db: Session,
     *,
@@ -117,12 +132,15 @@ def calculate_mix_calculator_preview(
             }
         )
 
+    mix_label = _mix_calculator_label(product)
     return {
         "client_name": product.client_name,
         "product_id": product.id,
-        "product_name": product.name,
+        # The source workbook labels this as Product, but for the calculator
+        # it is the mix/formula being produced.
+        "product_name": mix_label,
         "mix_id": product.mix_id,
-        "mix_name": product.mix.name if product.mix else product.name,
+        "mix_name": mix_label,
         "mix_date": values["mix_date"],
         "batch_size_kg": round(batch_size_kg, 4),
         "total_bags": total_bags,
@@ -156,21 +174,43 @@ def build_mix_calculator_options(db: Session, *, tenant_id: str) -> dict:
     ).all()
     mix_totals: dict[int, float] = {mix_id: round(total or 0.0, 4) for mix_id, total in mix_totals_rows}
 
+    product_ids_with_formulas = select(ProductIngredient.product_id).where(ProductIngredient.tenant_id == tenant_id)
     products = db.scalars(
         select(Product)
-        .where(Product.tenant_id == tenant_id, Product.visible.is_(True))
+        .where(
+            Product.tenant_id == tenant_id,
+            Product.visible.is_(True),
+            Product.id.in_(product_ids_with_formulas),
+        )
         .options(joinedload(Product.mix))
         .order_by(Product.client_name, Product.name)
     ).all()
 
+    representative_products: dict[tuple[str, str], Product] = {}
+    for product in products:
+        mix_label = _mix_calculator_label(product)
+        key = (product.client_name, mix_label)
+        current = representative_products.get(key)
+        if current is None:
+            representative_products[key] = product
+            continue
+
+        if _mix_calculator_option_rank(product) < _mix_calculator_option_rank(current):
+            representative_products[key] = product
+
+    products = sorted(
+        representative_products.values(),
+        key=lambda product: (product.client_name, _mix_calculator_label(product), product.id),
+    )
+
     clients = sorted({product.client_name for product in products})
     product_rows = [
         {
             "product_id": product.id,
             "client_name": product.client_name,
-            "product_name": product.name,
+            "product_name": _mix_calculator_label(product),
             "mix_id": product.mix_id,
-            "mix_name": product.mix.name if product.mix else "",
+            "mix_name": _mix_calculator_label(product),
             "unit_of_measure": product.unit_of_measure,
             "unit_size_kg": round(extract_unit_quantity_kg(product.unit_of_measure), 4),
             "mix_total_kg": product_totals.get(product.id, mix_totals.get(product.mix_id, 0.0)),

backend/app/services/product_costing_service.py

@@ -0,0 +1,338 @@
+from __future__ import annotations
+
+from dataclasses import dataclass
+import json
+import math
+
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+
+from app.models.product import Product
+from app.models.product_costing import (
+    ProductCostBagInput,
+    ProductCostBaseInput,
+    ProductCostClientInput,
+    ProductCostFreightInput,
+    ProductCostItem,
+    ProductCostProcessInput,
+)
+from app.services.costing_engine import calculate_product_cost
+
+
+UNIT_TYPES = ("Standard", "Bulka", "1.5 kg", "Per Unit")
+OWN_BAG_VALUES = ("Yes", "No Bag")
+ZERO_GRADING_CLIENTS = {"PHF Horse Mixes", "Peckish", "Hay & Straw"}
+PROCESS_NAMES = ("Bagging + Grading", "Standard Bagging", "PHF Horse Mixes", "Peckish", "Hay & Straw")
+BAG_INPUTS = {
+    "20kg_bag": "20kg bag",
+    "bulka_bag": "Bulka bag",
+    "own_bag_credit": "Own bag credit",
+    "1_5kg_bagging": "1.5kg bagging",
+    "peckish_bag": "Peckish bag",
+}
+FREIGHT_INPUTS = {
+    "freight_per_pallet": "Freight per pallet",
+    "peckish_freight_per_pallet": "Peckish freight per pallet",
+    "hay_straw_freight_per_pallet": "Hay & Straw freight per pallet",
+}
+
+
+@dataclass(frozen=True)
+class ProductCostInputItem:
+    client_category: str
+    product_name: str
+    mix_product_name: str
+    unit_type: str
+    own_bag: str | None
+    unit_kg: float | None
+    items_per_pallet: int | None
+    bagging_process: str | None
+    manual_distributor_margin: float | None
+    manual_wholesale_margin: float | None
+
+
+@dataclass(frozen=True)
+class ProductCostAssumptions:
+    grading_per_kg: float
+    cracking_per_kg: float
+    process_costs: dict[str, float]
+    client_margins: dict[str, dict[str, float | None]]
+    bag_costs: dict[str, float]
+    freight_costs: dict[str, float]
+
+
+@dataclass(frozen=True)
+class ProductCostCalculation:
+    cleaned_product_cost_per_kg: float | None
+    grading_cost_per_kg: float | None
+    bagging_cost_per_kg: float | None
+    cracking_cost_per_kg: float | None
+    bag_cost_per_unit: float | None
+    freight_cost_per_unit: float | None
+    finished_product_delivered_cost: float | None
+    distributor_price: float | None
+    wholesale_price: float | None
+    warnings: list[str]
+
+
+def _round4(value: float | None) -> float | None:
+    return None if value is None else round(value, 4)
+
+
+def _ceil_to(value: float, digits: int) -> float:
+    factor = 10**digits
+    return math.ceil((value * factor) - 1e-9) / factor
+
+
+def _valid_margin(value: float | None, label: str, warnings: list[str]) -> float | None:
+    if value is None:
+        return None
+    if value < 0 or value >= 1:
+        warnings.append(f"Invalid {label} margin")
+        return None
+    return value
+
+
+def calculate_product_cost_item(
+    item: ProductCostInputItem,
+    assumptions: ProductCostAssumptions,
+    cleaned_product_cost_per_kg: float | None,
+) -> ProductCostCalculation:
+    warnings: list[str] = []
+    unit_type = item.unit_type or "Standard"
+    unit_kg = item.unit_kg
+    items_per_pallet = item.items_per_pallet
+
+    if unit_type not in UNIT_TYPES:
+        warnings.append("Invalid unit type")
+
+    if cleaned_product_cost_per_kg is None:
+        warnings.append("Missing mix/product cost lookup")
+
+    if unit_kg is None or unit_kg <= 0:
+        warnings.append("Missing unit kg")
+
+    if items_per_pallet is None or items_per_pallet <= 0:
+        warnings.append("Missing pallet quantity")
+
+    grading_cost_per_kg = 0.0
+    if item.client_category not in ZERO_GRADING_CLIENTS and item.bagging_process:
+        grading_cost_per_kg = assumptions.grading_per_kg
+
+    bagging_cost_per_kg = assumptions.process_costs.get(item.bagging_process or "", 0.0)
+    if item.bagging_process and item.bagging_process not in assumptions.process_costs:
+        warnings.append("Missing bagging process cost")
+
+    cracking_cost_per_kg = assumptions.cracking_per_kg if "cracked" in item.product_name.lower() else 0.0
+
+    bag_cost_per_unit = 0.0
+    if item.client_category == "Peckish":
+        bag_cost_per_unit = assumptions.bag_costs.get("peckish_bag", 0.0)
+    elif unit_type == "1.5 kg":
+        bag_cost_per_unit = assumptions.bag_costs.get("1_5kg_bagging", 0.0)
+    elif item.own_bag == "No Bag":
+        bag_cost_per_unit = 0.0
+    elif unit_type == "Standard":
+        bag_cost_per_unit = assumptions.bag_costs.get("20kg_bag", 0.0)
+    elif unit_type == "Bulka":
+        bag_cost_per_unit = assumptions.bag_costs.get("bulka_bag", 0.0) / unit_kg if unit_kg and unit_kg > 0 else None
+    if bag_cost_per_unit is not None and item.own_bag == "Yes":
+        bag_cost_per_unit -= assumptions.bag_costs.get("own_bag_credit", 0.0)
+
+    freight_cost_per_unit: float | None
+    if item.client_category == "Peckish":
+        freight_cost_per_unit = assumptions.freight_costs.get("peckish_freight_per_pallet", 0.0) / items_per_pallet if items_per_pallet and items_per_pallet > 0 else None
+    elif item.client_category == "Hay & Straw":
+        freight_cost_per_unit = assumptions.freight_costs.get("hay_straw_freight_per_pallet", 0.0) / items_per_pallet if items_per_pallet and items_per_pallet > 0 else None
+    elif unit_type in {"Standard", "Per Unit"}:
+        freight_cost_per_unit = assumptions.freight_costs.get("freight_per_pallet", 0.0) / items_per_pallet if items_per_pallet and items_per_pallet > 0 else None
+    elif unit_type == "Bulka":
+        freight_cost_per_unit = assumptions.freight_costs.get("freight_per_pallet", 0.0) / unit_kg if unit_kg and unit_kg > 0 else None
+    else:
+        freight_cost_per_unit = assumptions.freight_costs.get("freight_per_pallet", 0.0) / 1000 * unit_kg if unit_kg and unit_kg > 0 else None
+
+    finished_cost = None
+    components = [cleaned_product_cost_per_kg, grading_cost_per_kg, bagging_cost_per_kg, cracking_cost_per_kg, bag_cost_per_unit, freight_cost_per_unit]
+    if all(value is not None for value in components) and unit_kg and unit_kg > 0:
+        per_kg_cost = cleaned_product_cost_per_kg + grading_cost_per_kg + bagging_cost_per_kg + cracking_cost_per_kg  # type: ignore[operator]
+        if unit_type == "Standard":
+            finished_cost = per_kg_cost * unit_kg + bag_cost_per_unit + freight_cost_per_unit  # type: ignore[operator]
+        elif unit_type in {"Bulka", "Per Unit"}:
+            finished_cost = per_kg_cost + bag_cost_per_unit + freight_cost_per_unit  # type: ignore[operator]
+        else:
+            finished_cost = (per_kg_cost * unit_kg + bag_cost_per_unit + freight_cost_per_unit) * 8  # type: ignore[operator]
+
+    client_margin = assumptions.client_margins.get(item.client_category, {})
+    distributor_margin = _valid_margin(
+        item.manual_distributor_margin if item.manual_distributor_margin is not None else client_margin.get("distributor_margin"),
+        "distributor",
+        warnings,
+    )
+    wholesale_margin = _valid_margin(
+        item.manual_wholesale_margin if item.manual_wholesale_margin is not None else client_margin.get("wholesale_margin"),
+        "wholesale",
+        warnings,
+    )
+
+    distributor_price = finished_cost / (1 - distributor_margin) if finished_cost is not None and distributor_margin is not None else None
+    wholesale_price = finished_cost / (1 - wholesale_margin) if finished_cost is not None and wholesale_margin is not None else None
+    if wholesale_price is not None:
+        wholesale_price = _ceil_to(wholesale_price, 2 if item.client_category == "Straight Grain" and unit_type == "Bulka" else 1)
+
+    return ProductCostCalculation(
+        cleaned_product_cost_per_kg=_round4(cleaned_product_cost_per_kg),
+        grading_cost_per_kg=_round4(grading_cost_per_kg),
+        bagging_cost_per_kg=_round4(bagging_cost_per_kg),
+        cracking_cost_per_kg=_round4(cracking_cost_per_kg),
+        bag_cost_per_unit=_round4(bag_cost_per_unit),
+        freight_cost_per_unit=_round4(freight_cost_per_unit),
+        finished_product_delivered_cost=_round4(finished_cost),
+        distributor_price=_round4(distributor_price),
+        wholesale_price=_round4(wholesale_price),
+        warnings=warnings,
+    )
+
+
+def _item_input(item: ProductCostItem) -> ProductCostInputItem:
+    return ProductCostInputItem(
+        client_category=item.client_category,
+        product_name=item.product_name,
+        mix_product_name=item.mix_product_name,
+        unit_type=item.unit_type,
+        own_bag=item.own_bag,
+        unit_kg=item.unit_kg,
+        items_per_pallet=item.items_per_pallet,
+        bagging_process=item.bagging_process,
+        manual_distributor_margin=item.manual_distributor_margin,
+        manual_wholesale_margin=item.manual_wholesale_margin,
+    )
+
+
+def get_product_costing_assumptions(db: Session, tenant_id: str) -> ProductCostAssumptions:
+    base = db.scalar(select(ProductCostBaseInput).where(ProductCostBaseInput.tenant_id == tenant_id))
+    if base is None:
+        base = ProductCostBaseInput(tenant_id=tenant_id)
+        db.add(base)
+        db.flush()
+
+    process_costs = {
+        row.process_name: row.cost_per_kg
+        for row in db.scalars(select(ProductCostProcessInput).where(ProductCostProcessInput.tenant_id == tenant_id)).all()
+    }
+    client_margins = {
+        row.client_category: {
+            "distributor_margin": row.distributor_margin,
+            "wholesale_margin": row.wholesale_margin,
+        }
+        for row in db.scalars(select(ProductCostClientInput).where(ProductCostClientInput.tenant_id == tenant_id)).all()
+    }
+    bag_costs = {
+        row.input_key: row.cost
+        for row in db.scalars(select(ProductCostBagInput).where(ProductCostBagInput.tenant_id == tenant_id)).all()
+    }
+    freight_costs = {
+        row.input_key: row.cost
+        for row in db.scalars(select(ProductCostFreightInput).where(ProductCostFreightInput.tenant_id == tenant_id)).all()
+    }
+    return ProductCostAssumptions(
+        grading_per_kg=base.grading_per_kg or ((base.grading_per_tonne or 0.0) / 1000),
+        cracking_per_kg=base.cracking_per_kg or ((base.cracking_per_tonne or 0.0) / 1000),
+        process_costs=process_costs,
+        client_margins=client_margins,
+        bag_costs=bag_costs,
+        freight_costs=freight_costs,
+    )
+
+
+def lookup_cleaned_product_cost_per_kg(db: Session, item: ProductCostItem) -> float | None:
+    product = db.scalar(
+        select(Product)
+        .where(
+            Product.tenant_id == item.tenant_id,
+            Product.client_name == item.client_category,
+            Product.name == item.mix_product_name,
+        )
+        .limit(1)
+    )
+    if product is None:
+        product = db.scalar(
+            select(Product)
+            .where(
+                Product.tenant_id == item.tenant_id,
+                Product.client_name == item.client_category,
+                Product.name == item.product_name,
+            )
+            .limit(1)
+        )
+    if product is None:
+        return None
+    try:
+        result = calculate_product_cost(db, product.id)
+    except ValueError:
+        return None
+    mix = (result.get("inputs") or {}).get("mix") or {}
+    return mix.get("mix_cost_per_kg")
+
+
+def apply_calculation(item: ProductCostItem, calculation: ProductCostCalculation) -> ProductCostItem:
+    item.cleaned_product_cost_per_kg = calculation.cleaned_product_cost_per_kg
+    item.grading_cost_per_kg = calculation.grading_cost_per_kg
+    item.bagging_cost_per_kg = calculation.bagging_cost_per_kg
+    item.cracking_cost_per_kg = calculation.cracking_cost_per_kg
+    item.bag_cost_per_unit = calculation.bag_cost_per_unit
+    item.freight_cost_per_unit = calculation.freight_cost_per_unit
+    item.finished_product_delivered_cost = calculation.finished_product_delivered_cost
+    item.distributor_price = calculation.distributor_price
+    item.wholesale_price = calculation.wholesale_price
+    item.warnings = json.dumps(calculation.warnings)
+    return item
+
+
+def recalculate_product_cost_item(db: Session, item: ProductCostItem) -> ProductCostItem:
+    assumptions = get_product_costing_assumptions(db, item.tenant_id)
+    cleaned_cost = lookup_cleaned_product_cost_per_kg(db, item)
+    calculation = calculate_product_cost_item(_item_input(item), assumptions, cleaned_cost)
+    return apply_calculation(item, calculation)
+
+
+def recalculate_all_product_cost_items(db: Session, tenant_id: str) -> int:
+    items = db.scalars(select(ProductCostItem).where(ProductCostItem.tenant_id == tenant_id)).all()
+    for item in items:
+        recalculate_product_cost_item(db, item)
+    return len(items)
+
+
+def serialize_product_cost_item(item: ProductCostItem) -> dict:
+    warnings = []
+    if item.warnings:
+        try:
+            warnings = json.loads(item.warnings)
+        except json.JSONDecodeError:
+            warnings = [item.warnings]
+    return {
+        "id": item.id,
+        "tenant_id": item.tenant_id,
+        "client_category": item.client_category,
+        "item_id": item.item_id,
+        "product_name": item.product_name,
+        "mix_product_name": item.mix_product_name,
+        "unit_type": item.unit_type,
+        "own_bag": item.own_bag,
+        "unit_kg": item.unit_kg,
+        "items_per_pallet": item.items_per_pallet,
+        "bagging_process": item.bagging_process,
+        "manual_distributor_margin": item.manual_distributor_margin,
+        "manual_wholesale_margin": item.manual_wholesale_margin,
+        "cleaned_product_cost_per_kg": item.cleaned_product_cost_per_kg,
+        "grading_cost_per_kg": item.grading_cost_per_kg,
+        "bagging_cost_per_kg": item.bagging_cost_per_kg,
+        "cracking_cost_per_kg": item.cracking_cost_per_kg,
+        "bag_cost_per_unit": item.bag_cost_per_unit,
+        "freight_cost_per_unit": item.freight_cost_per_unit,
+        "finished_product_delivered_cost": item.finished_product_delivered_cost,
+        "distributor_price": item.distributor_price,
+        "wholesale_price": item.wholesale_price,
+        "warnings": warnings,
+        "created_at": item.created_at,
+        "updated_at": item.updated_at,
+    }

backend/data_entry_app_backend.egg-info/PKG-INFO

@@ -1,10 +1,11 @@
 Metadata-Version: 2.4
 Name: data-entry-app-backend
-Version: 0.1.5
+Version: 0.1.12
 Summary: Costing platform MVP backend
 Requires-Python: >=3.11
 Requires-Dist: fastapi<1.0,>=0.115
 Requires-Dist: openpyxl<4.0,>=3.1
+Requires-Dist: rich<15.0,>=13.9
 Requires-Dist: uvicorn[standard]<1.0,>=0.30
 Requires-Dist: sqlalchemy<3.0,>=2.0
 Requires-Dist: pydantic<3.0,>=2.8

backend/data_entry_app_backend.egg-info/SOURCES.txt

@@ -9,16 +9,23 @@ pyproject.toml
 ./app/api/client_access.py
 ./app/api/dashboard.py
 ./app/api/deps.py
+./app/api/editor.py
 ./app/api/mix_calculator.py
 ./app/api/mixes.py
 ./app/api/powerbi.py
+./app/api/product_costing.py
 ./app/api/products.py
 ./app/api/raw_materials.py
 ./app/api/scenarios.py
+./app/api/throughput.py
 ./app/core/__init__.py
 ./app/core/access.py
 ./app/core/config.py
+./app/core/http.py
+./app/core/logging.py
+./app/core/rate_limit.py
 ./app/core/security.py
+./app/core/security_logging.py
 ./app/db/__init__.py
 ./app/db/migrations.py
 ./app/db/session.py
@@ -29,49 +36,89 @@ pyproject.toml
 ./app/models/mix.py
 ./app/models/mix_calculator.py
 ./app/models/product.py
+./app/models/product_costing.py
 ./app/models/raw_material.py
 ./app/models/scenario.py
+./app/models/throughput.py
 ./app/schemas/__init__.py
 ./app/schemas/client_access.py
+./app/schemas/editor.py
 ./app/schemas/mix.py
 ./app/schemas/mix_calculator.py
 ./app/schemas/product.py
+./app/schemas/product_costing.py
 ./app/schemas/raw_material.py
 ./app/schemas/scenario.py
+./app/schemas/throughput.py
 ./app/services/__init__.py
 ./app/services/client_access_service.py
 ./app/services/costing_engine.py
 ./app/services/mix_calculator_filenames.py
 ./app/services/mix_calculator_pdf.py
 ./app/services/mix_calculator_service.py
+./app/services/product_costing_service.py
 ./app/services/scenario_engine.py
+./app/services/throughput_service.py
 app/__init__.py
 app/main.py
 app/seed.py
+app/seed_access.py
 app/api/__init__.py
+app/api/access.py
+app/api/auth.py
+app/api/client_access.py
+app/api/dashboard.py
+app/api/deps.py
+app/api/editor.py
+app/api/mix_calculator.py
 app/api/mixes.py
 app/api/powerbi.py
+app/api/product_costing.py
 app/api/products.py
 app/api/raw_materials.py
 app/api/scenarios.py
+app/api/throughput.py
 app/core/__init__.py
+app/core/access.py
 app/core/config.py
+app/core/http.py
+app/core/logging.py
+app/core/rate_limit.py
+app/core/security.py
+app/core/security_logging.py
 app/db/__init__.py
+app/db/migrations.py
 app/db/session.py
 app/models/__init__.py
+app/models/access.py
 app/models/assumption.py
+app/models/client_access.py
 app/models/mix.py
+app/models/mix_calculator.py
 app/models/product.py
+app/models/product_costing.py
 app/models/raw_material.py
 app/models/scenario.py
+app/models/throughput.py
 app/schemas/__init__.py
+app/schemas/client_access.py
+app/schemas/editor.py
 app/schemas/mix.py
+app/schemas/mix_calculator.py
 app/schemas/product.py
+app/schemas/product_costing.py
 app/schemas/raw_material.py
 app/schemas/scenario.py
+app/schemas/throughput.py
 app/services/__init__.py
+app/services/client_access_service.py
 app/services/costing_engine.py
+app/services/mix_calculator_filenames.py
+app/services/mix_calculator_pdf.py
+app/services/mix_calculator_service.py
+app/services/product_costing_service.py
 app/services/scenario_engine.py
+app/services/throughput_service.py
 data_entry_app_backend.egg-info/PKG-INFO
 data_entry_app_backend.egg-info/SOURCES.txt
 data_entry_app_backend.egg-info/dependency_links.txt
@@ -79,3 +126,6 @@ data_entry_app_backend.egg-info/requires.txt
 data_entry_app_backend.egg-info/top_level.txt
 tests/test_access.py
 tests/test_costing_engine.py
+tests/test_product_costing.py
+tests/test_schema.py
+tests/test_throughput.py

backend/data_entry_app_backend.egg-info/requires.txt

@@ -1,5 +1,6 @@
 fastapi<1.0,>=0.115
 openpyxl<4.0,>=3.1
+rich<15.0,>=13.9
 uvicorn[standard]<1.0,>=0.30
 sqlalchemy<3.0,>=2.0
 pydantic<3.0,>=2.8

backend/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "data-entry-app-backend"
-version = "0.1.9"
+version = "0.1.12"
 description = "Costing platform MVP backend"
 requires-python = ">=3.11"
 dependencies = [

backend/tests/_repro_throughput_post.py

@@ -1,62 +0,0 @@
-from fastapi import FastAPI
-from fastapi.testclient import TestClient
-from sqlalchemy import create_engine
-from sqlalchemy.orm import sessionmaker
-
-from app.db.session import Base, get_db
-from app.core.access import INTERNAL_USER_SUBJECT, INTERNAL_USER_TENANT_ID
-from app.core.security import issue_token
-from app.models.access import User
-from app.models.throughput import ThroughputProduct
-from app.api.throughput import router as throughput_router
-from app.seed import seed_access
-
-
-def run():
-    engine = create_engine("sqlite:///:memory:", connect_args={"check_same_thread": False})
-    Base.metadata.create_all(bind=engine)
-    db = sessionmaker(bind=engine, expire_on_commit=False)()
-    seed_access(db)
-
-    product = ThroughputProduct(
-        tenant_id=INTERNAL_USER_TENANT_ID,
-        name="Test Product 20kg",
-        default_bag_size=20,
-        active=True,
-    )
-    db.add(product)
-    db.commit()
-
-    app = FastAPI()
-    app.dependency_overrides[get_db] = lambda: iter([db])
-    app.include_router(throughput_router)
-    client = TestClient(app)
-
-    ops = db.query(User).filter_by(email="ops@hunterstockfeeds.com").one()
-    token = issue_token({"sub": INTERNAL_USER_SUBJECT, "user_id": ops.id, "email": ops.email})
-
-    payload = {
-        "production_date": "2026-06-01",
-        "product_id": product.id,
-        "product_name_snapshot": "Test Product 20kg",
-        "bag_size": 20,
-        "quantity": 10,
-        "quantity_type": "bags",
-        "for_order": True,
-        "for_stock": False,
-        "job_number": "JOB123",
-        "stock_quantity": None,
-        "staff_name": "Jake",
-        "notes": None,
-    }
-    resp = client.post(
-        "/api/throughput/entries",
-        json=payload,
-        headers={"Authorization": f"Bearer {token}"},
-    )
-    print("STATUS:", resp.status_code)
-    print("BODY:", resp.text[:1500])
-
-
-if __name__ == "__main__":
-    run()

backend/tests/test_costing_engine.py

@@ -246,7 +246,7 @@ def test_mix_calculator_options_hide_invisible_products_and_clients():
     options = build_mix_calculator_options(db, tenant_id="hunter-premium-produce")
 
     assert options["clients"] == ["Peckish"]
-    assert [product["product_name"] for product in options["products"]] == ["Visible Product"]
+    assert [product["product_name"] for product in options["products"]] == ["Visible Mix"]
     assert options["products"][0]["mix_total_kg"] == 20
 
 
@@ -482,8 +482,12 @@ def test_mix_calculator_endpoints_respect_owner_visibility():
         options_response = client.get("/api/mix-calculator/options", cookies=superadmin_cookies)
         assert options_response.status_code == 200
         options_payload = options_response.json()
-        assert len(options_payload["products"]) >= 100
+        assert len(options_payload["products"]) == 84
-        seeded_product = next(product for product in options_payload["products"] if product["product_name"] == "Specialty Pigeon Breeder 20kg")
+        seeded_product = next(
+            product
+            for product in options_payload["products"]
+            if product["client_name"] == "Specialty" and product["product_name"] == "Pigeon Mix"
+        )
         assert seeded_product["unit_size_kg"] == 20
 
         create_response = client.post(
@@ -540,7 +544,9 @@ def test_mix_calculator_pdf_endpoint_returns_pdf():
 
         options_response = client.get("/api/mix-calculator/options", cookies=superadmin_cookies)
         seeded_product = next(
-            product for product in options_response.json()["products"] if product["product_name"] == "Specialty Pigeon Breeder 20kg"
+            product
+            for product in options_response.json()["products"]
+            if product["client_name"] == "Specialty" and product["product_name"] == "Pigeon Mix"
         )
 
         create_response = client.post(

backend/tests/test_product_costing.py

@@ -0,0 +1,169 @@
+from app.services.product_costing_service import (
+    ProductCostAssumptions,
+    ProductCostInputItem,
+    calculate_product_cost_item,
+)
+
+
+def assumptions() -> ProductCostAssumptions:
+    return ProductCostAssumptions(
+        grading_per_kg=0.05,
+        cracking_per_kg=0.03,
+        process_costs={
+            "Bagging + Grading": 0.04,
+            "Standard Bagging": 0.02,
+            "PHF Horse Mixes": 0.01,
+            "Peckish": 0.08,
+            "Hay & Straw": 0.09,
+        },
+        client_margins={
+            "Specialty": {"distributor_margin": 0.2, "wholesale_margin": 0.1},
+            "Peckish": {"distributor_margin": 0.25, "wholesale_margin": 0.15},
+            "Hay & Straw": {"distributor_margin": 0.3, "wholesale_margin": 0.2},
+            "Straight Grain": {"distributor_margin": 0.1, "wholesale_margin": 0.08},
+            "PHF Horse Mixes": {"distributor_margin": 0.18, "wholesale_margin": 0.12},
+        },
+        bag_costs={
+            "20kg_bag": 0.6,
+            "bulka_bag": 22.0,
+            "own_bag_credit": 0.2,
+            "1_5kg_bagging": 0.35,
+            "peckish_bag": 0.4,
+        },
+        freight_costs={
+            "freight_per_pallet": 80.0,
+            "peckish_freight_per_pallet": 96.0,
+            "hay_straw_freight_per_pallet": 120.0,
+        },
+    )
+
+
+def item(**overrides) -> ProductCostInputItem:
+    values = {
+        "client_category": "Specialty",
+        "product_name": "Pigeon Mix 20kg",
+        "mix_product_name": "Pigeon Mix",
+        "unit_type": "Standard",
+        "own_bag": None,
+        "unit_kg": 20.0,
+        "items_per_pallet": 40,
+        "bagging_process": "Bagging + Grading",
+        "manual_distributor_margin": None,
+        "manual_wholesale_margin": None,
+    }
+    values.update(overrides)
+    return ProductCostInputItem(**values)
+
+
+def test_standard_product_uses_per_kg_components_unit_bag_freight_and_default_margins():
+    result = calculate_product_cost_item(item(), assumptions(), 0.5)
+
+    assert result.grading_cost_per_kg == 0.05
+    assert result.bagging_cost_per_kg == 0.04
+    assert result.bag_cost_per_unit == 0.6
+    assert result.freight_cost_per_unit == 2.0
+    assert result.finished_product_delivered_cost == 14.4
+    assert result.distributor_price == 18.0
+    assert result.wholesale_price == 16.0
+    assert result.warnings == []
+
+
+def test_bulka_uses_per_kg_delivered_formula_and_bulka_bag_and_freight_divided_by_unit_kg():
+    result = calculate_product_cost_item(item(unit_type="Bulka", unit_kg=1000, items_per_pallet=1), assumptions(), 0.5)
+
+    assert result.bag_cost_per_unit == 0.022
+    assert result.freight_cost_per_unit == 0.08
+    assert result.finished_product_delivered_cost == 0.692
+
+
+def test_per_unit_uses_per_kg_delivered_formula_but_standard_pallet_freight():
+    result = calculate_product_cost_item(item(unit_type="Per Unit", unit_kg=1, items_per_pallet=10), assumptions(), 0.5)
+
+    assert result.freight_cost_per_unit == 8.0
+    assert result.finished_product_delivered_cost == 8.59
+
+
+def test_peckish_uses_peckish_bag_freight_and_zero_grading():
+    result = calculate_product_cost_item(
+        item(client_category="Peckish", bagging_process="Peckish", items_per_pallet=24),
+        assumptions(),
+        0.5,
+    )
+
+    assert result.grading_cost_per_kg == 0
+    assert result.bagging_cost_per_kg == 0.08
+    assert result.bag_cost_per_unit == 0.4
+    assert result.freight_cost_per_unit == 4.0
+
+
+def test_hay_and_straw_uses_hay_freight_and_zero_grading():
+    result = calculate_product_cost_item(
+        item(client_category="Hay & Straw", bagging_process="Hay & Straw", items_per_pallet=30),
+        assumptions(),
+        0.5,
+    )
+
+    assert result.grading_cost_per_kg == 0
+    assert result.freight_cost_per_unit == 4.0
+
+
+def test_phf_horse_mixes_have_zero_grading():
+    result = calculate_product_cost_item(
+        item(client_category="PHF Horse Mixes", bagging_process="PHF Horse Mixes"),
+        assumptions(),
+        0.5,
+    )
+
+    assert result.grading_cost_per_kg == 0
+
+
+def test_own_bag_subtracts_credit_and_no_bag_sets_bag_cost_to_zero():
+    own_bag = calculate_product_cost_item(item(own_bag="Yes"), assumptions(), 0.5)
+    no_bag = calculate_product_cost_item(item(own_bag="No Bag"), assumptions(), 0.5)
+
+    assert own_bag.bag_cost_per_unit == 0.4
+    assert no_bag.bag_cost_per_unit == 0
+
+
+def test_one_point_five_kg_branch_multiplies_pack_formula_by_eight():
+    result = calculate_product_cost_item(item(unit_type="1.5 kg", unit_kg=1.5), assumptions(), 0.5)
+
+    assert result.bag_cost_per_unit == 0.35
+    assert result.finished_product_delivered_cost == 10.84
+
+
+def test_cracked_product_adds_cracking_cost_and_manual_margins_override_defaults():
+    result = calculate_product_cost_item(
+        item(product_name="Cracked Maize 20kg", manual_distributor_margin=0.1, manual_wholesale_margin=0.05),
+        assumptions(),
+        0.5,
+    )
+
+    assert result.cracking_cost_per_kg == 0.03
+    assert result.distributor_price == 16.6667
+    assert result.wholesale_price == 15.8
+
+
+def test_straight_grain_bulka_wholesale_rounds_up_to_two_decimals():
+    result = calculate_product_cost_item(
+        item(client_category="Straight Grain", unit_type="Bulka", unit_kg=1000, items_per_pallet=1),
+        assumptions(),
+        0.5,
+    )
+
+    assert result.wholesale_price == 0.76
+
+
+def test_missing_lookup_and_invalid_inputs_generate_warnings_without_prices():
+    result = calculate_product_cost_item(
+        item(unit_kg=None, items_per_pallet=0, manual_distributor_margin=1.2),
+        assumptions(),
+        None,
+    )
+
+    assert "Missing mix/product cost lookup" in result.warnings
+    assert "Missing unit kg" in result.warnings
+    assert "Missing pallet quantity" in result.warnings
+    assert "Invalid distributor margin" in result.warnings
+    assert result.finished_product_delivered_cost is None
+    assert result.distributor_price is None

backend/tests/test_schema.py

@@ -0,0 +1,27 @@
+from __future__ import annotations
+
+from sqlalchemy import create_engine, inspect
+from sqlalchemy.pool import StaticPool
+
+import app.models  # noqa: F401 - import all model modules before reading metadata
+from app.db.session import Base
+
+
+def test_fresh_sqlite_schema_matches_model_metadata():
+    engine = create_engine(
+        "sqlite:///:memory:",
+        connect_args={"check_same_thread": False},
+        poolclass=StaticPool,
+    )
+
+    Base.metadata.create_all(bind=engine)
+    inspector = inspect(engine)
+
+    actual_tables = set(inspector.get_table_names())
+    expected_tables = set(Base.metadata.tables)
+    assert actual_tables == expected_tables
+
+    for table_name, table in Base.metadata.tables.items():
+        actual_columns = {column["name"] for column in inspector.get_columns(table_name)}
+        expected_columns = {column.name for column in table.columns}
+        assert actual_columns == expected_columns

docker-compose.alpha.yml

@@ -6,7 +6,7 @@ services:
       dockerfile: backend/Dockerfile
     restart: unless-stopped
     environment:
-      APP_NAME: ${APP_NAME:-Lean 101 Clients API}
+      APP_NAME: ${APP_NAME:-Hunter App}
       DATABASE_URL: ${DATABASE_URL:-sqlite:////data/data_entry_app.db}
       CLIENT_NAME: ${CLIENT_NAME:-Hunter Premium Produce}
       CLIENT_EMAIL: ${CLIENT_EMAIL:-operator@example.com}

docker-compose.production.yml

@@ -23,7 +23,7 @@ services:
       dockerfile: backend/Dockerfile
     restart: unless-stopped
     environment:
-      APP_NAME: ${APP_NAME:-Lean 101 Clients API}
+      APP_NAME: ${APP_NAME:-Hunter App}
       APP_ENV: ${APP_ENV:-production}
       DATABASE_URL: ${DATABASE_URL:-postgresql+psycopg://${POSTGRES_USER:-lean101}:${POSTGRES_PASSWORD}@db:5432/${POSTGRES_DB:-lean101}}
       CLIENT_NAME: ${CLIENT_NAME:-Hunter Premium Produce}

docker-compose.yml

@@ -6,7 +6,7 @@ services:
       dockerfile: backend/Dockerfile
     restart: unless-stopped
     environment:
-      APP_NAME: ${APP_NAME:-Lean 101 Clients API}
+      APP_NAME: ${APP_NAME:-Hunter App}
       APP_ENV: ${APP_ENV:-development}
       DATABASE_URL: ${DATABASE_URL:-sqlite:////data/data_entry_app.db}
       CLIENT_NAME: ${CLIENT_NAME:-Hunter Premium Produce}

frontend/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "hunter-app",
-  "version": "0.1.11b",
+  "version": "0.1.12",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "hunter-app",
-      "version": "0.1.11b",
+      "version": "0.1.12",
       "dependencies": {
         "@fontsource/inter": "^5.2.8",
         "lucide-svelte": "^1.0.1"

frontend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "hunter-app",
-  "version": "0.1.11b",
+  "version": "0.1.12",
   "private": true,
   "type": "module",
   "scripts": {

frontend/src/app.html

@@ -4,6 +4,21 @@
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <link rel="icon" href="/favicon.png" />
+    <script>
+      // Resolve the theme before first paint so there is no light-mode flash.
+      (function () {
+        try {
+          var pref = localStorage.getItem('theme');
+          var dark =
+            pref === 'dark' ||
+            ((!pref || pref === 'system') &&
+              window.matchMedia('(prefers-color-scheme: dark)').matches);
+          document.documentElement.dataset.theme = dark ? 'dark' : 'light';
+        } catch (e) {
+          document.documentElement.dataset.theme = 'light';
+        }
+      })();
+    </script>
     %sveltekit.head%
   </head>
   <body data-sveltekit-preload-data="hover">

frontend/src/lib/api.ts

@@ -1,16 +1,5 @@
 import { env } from '$env/dynamic/public';
 import { browser } from '$app/environment';
-import {
-  mockClientAccess,
-  mockClientAccessExport,
-  mockCosts,
-  mockMixCalculatorOptions,
-  mockMixCalculatorSessions,
-  mockMixes,
-  mockProducts,
-  mockRawMaterials,
-  mockScenarios
-} from '$lib/mock';
 import type {
   ClientAccessAccount,
   ClientAccessPowerBiExport,
@@ -34,6 +23,9 @@ import type {
   MixUpdateInput,
   Product,
   ProductCostBreakdown,
+  ProductCostingInputs,
+  ProductCostingItem,
+  ProductCostingItemUpdateInput,
   RawMaterial,
   RawMaterialCreateInput,
   RawMaterialPriceCreateInput,
@@ -136,24 +128,18 @@ function normalizeRequestError(error: unknown) {
   return new Error('An unexpected error occurred while contacting the server.');
 }
 
-async function fetchJson<T>(path: string, fallback: T, auth: AuthMode = 'none', fetcher: ApiFetch = fetch): Promise<T> {
+async function fetchJson<T>(path: string, auth: AuthMode = 'none', fetcher: ApiFetch = fetch): Promise<T> {
   try {
     const response = await fetcher(resolveRequestUrl(path, fetcher), {
       credentials: 'include'
     });
     if (!response.ok) {
-      if (auth !== 'none') {
+      throw new Error(response.statusText || 'Request failed');
-        throw new Error(response.statusText || 'Unauthorized');
-      }
-      return fallback;
     }
     return (await response.json()) as T;
   } catch (error) {
-    if (auth !== 'none') {
     throw normalizeRequestError(error);
   }
-    return fallback;
-  }
 }
 
 // In-memory GET cache with TTL + in-flight de-duplication. The cache key
@@ -172,13 +158,12 @@ function makeCacheKey(path: string, auth: AuthMode) {
 
 async function cachedFetchJson<T>(
   path: string,
-  fallback: T,
   auth: AuthMode = 'none',
   fetcher: ApiFetch = fetch
 ): Promise<T> {
   // Bypass the cache during SSR (no localStorage, no shared session).
   if (!browser) {
-    return fetchJson<T>(path, fallback, auth, fetcher);
+    return fetchJson<T>(path, auth, fetcher);
   }
 
   const key = makeCacheKey(path, auth);
@@ -194,7 +179,7 @@ async function cachedFetchJson<T>(
     return existing as Promise<T>;
   }
 
-  const promise = fetchJson<T>(path, fallback, auth, fetcher)
+  const promise = fetchJson<T>(path, auth, fetcher)
     .then((value) => {
       responseCache.set(key, { value, expiresAt: Date.now() + READ_CACHE_TTL_MS });
       return value;
@@ -290,13 +275,13 @@ async function requestBlob(
 }
 
 export const api = {
-  rawMaterials: (fetcher?: ApiFetch) => cachedFetchJson<RawMaterial[]>('/api/raw-materials', mockRawMaterials, 'client', fetcher),
+  rawMaterials: (fetcher?: ApiFetch) => cachedFetchJson<RawMaterial[]>('/api/raw-materials', 'client', fetcher),
-  mixes: (fetcher?: ApiFetch) => cachedFetchJson('/api/mixes', mockMixes, 'client', fetcher),
+  mixes: (fetcher?: ApiFetch) => cachedFetchJson<Mix[]>('/api/mixes', 'client', fetcher),
   mix: (mixId: number, fetcher?: ApiFetch) => request<Mix>(`/api/mixes/${mixId}`, { method: 'GET' }, 'client', fetcher),
   mixCalculatorOptions: (fetcher?: ApiFetch) =>
-    cachedFetchJson<MixCalculatorOptions>('/api/mix-calculator/options', mockMixCalculatorOptions, 'client', fetcher),
+    cachedFetchJson<MixCalculatorOptions>('/api/mix-calculator/options', 'client', fetcher),
   mixCalculatorSessions: (fetcher?: ApiFetch) =>
-    cachedFetchJson<MixCalculatorSession[]>('/api/mix-calculator', mockMixCalculatorSessions, 'client', fetcher),
+    cachedFetchJson<MixCalculatorSession[]>('/api/mix-calculator', 'client', fetcher),
   mixCalculatorSession: (sessionId: number, fetcher?: ApiFetch) =>
     request<MixCalculatorSession>(`/api/mix-calculator/${sessionId}`, { method: 'GET' }, 'client', fetcher),
   mixCalculatorSessionPdf: (sessionId: number, fetcher?: ApiFetch) =>
@@ -321,7 +306,7 @@ export const api = {
       method: 'PATCH',
       body: JSON.stringify(payload)
     }, 'client'),
-  products: (fetcher?: ApiFetch) => cachedFetchJson<Product[]>('/api/products', mockProducts, 'client', fetcher),
+  products: (fetcher?: ApiFetch) => cachedFetchJson<Product[]>('/api/products', 'client', fetcher),
   editorProducts: (params?: { q?: string; client_name?: string; limit?: number }, fetcher?: ApiFetch) => {
     const search = new URLSearchParams();
     if (params?.q) search.set('q', params.q);
@@ -329,7 +314,7 @@ export const api = {
     if (params?.limit) search.set('limit', String(params.limit));
     const qs = search.toString();
     const path = qs ? `/api/editor/products?${qs}` : '/api/editor/products';
-    return cachedFetchJson<EditorProductRow[]>(path, [], 'client', fetcher);
+    return cachedFetchJson<EditorProductRow[]>(path, 'client', fetcher);
   },
   updateEditorProduct: (productId: number, payload: EditorProductUpdateInput) =>
     request<EditorProductRow>(`/api/editor/products/${productId}`, {
@@ -358,10 +343,28 @@ export const api = {
       method: 'DELETE'
     }, 'client'),
   productCosts: (fetcher?: ApiFetch) =>
-    cachedFetchJson<ProductCostBreakdown[]>('/api/powerbi/product-costs', mockCosts, 'client', fetcher),
+    cachedFetchJson<ProductCostBreakdown[]>('/api/powerbi/product-costs', 'client', fetcher),
-  scenarios: (fetcher?: ApiFetch) => cachedFetchJson<Scenario[]>('/api/scenarios', mockScenarios, 'client', fetcher),
+  productCostingItems: (fetcher?: ApiFetch) =>
+    cachedFetchJson<ProductCostingItem[]>('/api/product-costing/items', 'client', fetcher),
+  productCostingItemsFresh: () =>
+    request<ProductCostingItem[]>(`/api/product-costing/items?_=${Date.now()}`, { method: 'GET' }, 'client'),
+  productCostingInputs: (fetcher?: ApiFetch) =>
+    cachedFetchJson<ProductCostingInputs>('/api/product-costing/inputs', 'client', fetcher),
+  updateProductCostingInputs: (payload: Partial<ProductCostingInputs>) =>
+    request<ProductCostingInputs>('/api/product-costing/inputs', {
+      method: 'PATCH',
+      body: JSON.stringify(payload)
+    }, 'client'),
+  updateProductCostingItem: (itemId: number, payload: ProductCostingItemUpdateInput) =>
+    request<ProductCostingItem>(`/api/product-costing/items/${itemId}`, {
+      method: 'PATCH',
+      body: JSON.stringify(payload)
+    }, 'client'),
+  recalculateProductCosting: () =>
+    request<{ recalculated: number }>('/api/product-costing/recalculate-all', { method: 'POST' }, 'client'),
+  scenarios: (fetcher?: ApiFetch) => cachedFetchJson<Scenario[]>('/api/scenarios', 'client', fetcher),
   throughputProducts: (fetcher?: ApiFetch) =>
-    cachedFetchJson<ThroughputProduct[]>('/api/throughput/products', [], 'client', fetcher),
+    cachedFetchJson<ThroughputProduct[]>('/api/throughput/products', 'client', fetcher),
   throughputEntries: (params?: ThroughputEntryListParams, fetcher?: ApiFetch) => {
     const search = new URLSearchParams();
     if (params?.date_from) search.set('date_from', params.date_from);
@@ -372,7 +375,7 @@ export const api = {
     if (params?.limit) search.set('limit', String(params.limit));
     const qs = search.toString();
     const path = qs ? `/api/throughput/entries?${qs}` : '/api/throughput/entries';
-    return cachedFetchJson<ThroughputEntry[]>(path, [], 'client', fetcher);
+    return cachedFetchJson<ThroughputEntry[]>(path, 'client', fetcher);
   },
   createThroughputEntry: (payload: ThroughputEntryCreateInput) =>
     request<ThroughputEntry>('/api/throughput/entries', {
@@ -389,22 +392,12 @@ export const api = {
       method: 'PATCH',
       body: JSON.stringify(payload)
     }, 'client'),
-  clientAccess: (fetcher?: ApiFetch) => cachedFetchJson<ClientAccessAccount[]>('/api/client-access', mockClientAccess, 'manager', fetcher),
+  clientAccess: (fetcher?: ApiFetch) => cachedFetchJson<ClientAccessAccount[]>('/api/client-access', 'manager', fetcher),
   clientAccessExport: (fetcher?: ApiFetch) =>
-    cachedFetchJson<ClientAccessPowerBiExport>('/api/powerbi/client-access', mockClientAccessExport, 'manager', fetcher),
+    cachedFetchJson<ClientAccessPowerBiExport>('/api/powerbi/client-access', 'manager', fetcher),
-  dataQuality: (fetcher?: ApiFetch) => cachedFetchJson('/api/powerbi/data-quality-issues', [], 'client', fetcher),
+  dataQuality: (fetcher?: ApiFetch) => cachedFetchJson('/api/powerbi/data-quality-issues', 'client', fetcher),
   dashboardSummary: (fetcher?: ApiFetch) =>
-    cachedFetchJson<DashboardSummary>(
+    cachedFetchJson<DashboardSummary>('/api/dashboard/summary', 'client', fetcher),
-      '/api/dashboard/summary',
-      {
-        raw_materials: null,
-        mixes: null,
-        products: null,
-        trend_seeds: { raw_material_cost_per_kg: [], mix_cost_per_kg: [], product_finished_delivered: [] }
-      },
-      'client',
-      fetcher
-    ),
   clientLogin: (email: string, password: string) =>
     request<LoginResponse>('/api/auth/client/login', {
       method: 'POST',

frontend/src/lib/components/AdminShell.svelte

@@ -163,10 +163,8 @@
     min-height: 100vh;
     display: grid;
     grid-template-columns: 280px minmax(0, 1fr);
-    background:
+    background: var(--color-bg-app);
-      radial-gradient(circle at top left, rgba(167, 217, 190, 0.22), transparent 34%),
+    color: var(--color-text-primary);
-      linear-gradient(180deg, #f7f8f4 0%, #eef2ea 100%);
-    color: #203028;
   }
 
   .admin-sidebar {

frontend/src/lib/components/ClientShell.svelte

@@ -17,6 +17,7 @@
     canOpenEditor as sessionCanOpenEditor,
     canOpenMixCalculator as sessionCanOpenMixCalculator,
     canOpenMixMaster as sessionCanOpenMixMaster,
+    canOpenProductCosting as sessionCanOpenProductCosting,
     canOpenReporting as sessionCanOpenReporting,
     canOpenSettings as sessionCanOpenSettings,
     canOpenThroughput as sessionCanOpenThroughput,
@@ -28,6 +29,7 @@
   import {
     accessControlItem,
     baseSearchItems,
+    buildClientNavEntries,
     clientBreadcrumbs,
     dashboardItem,
     editorItem,
@@ -35,6 +37,7 @@
     matchesRoute,
     mixCalculatorItem,
     pageTitle,
+    productCostingItem,
     reportingItem,
     throughputItem,
     type FooterLink,
@@ -96,10 +99,27 @@
         })
   );
   const visibleMixCalculatorItem = $derived(canOpenMixCalculator ? mixCalculatorItem : null);
+  const visibleProductCostingItem = $derived(sessionCanOpenProductCosting($clientSession) ? productCostingItem : null);
   const canOpenThroughput = $derived(sessionCanOpenThroughput($clientSession));
   const visibleThroughputItem = $derived(canOpenThroughput ? throughputItem : null);
   const visibleReportingItem = $derived(sessionCanOpenReporting($clientSession) ? reportingItem : null);
   const visibleEditorItem = $derived(canOpenEditor ? editorItem : null);
+  // Grouped desktop rail: Dashboard, a collapsible "Costing" family, then the
+  // standalone operations/insights modules. Built from the same access-filtered
+  // items, so a role only ever sees the families it may open.
+  const navEntries = $derived(
+    buildClientNavEntries({
+      dashboard: visibleDashboardItem,
+      costing: [
+        ...(visibleMixCalculatorItem ? [visibleMixCalculatorItem] : []),
+        ...(visibleProductCostingItem ? [visibleProductCostingItem] : []),
+        ...(visibleEditorItem ? [visibleEditorItem] : []),
+        ...visibleWorkingDocumentItems
+      ],
+      throughput: visibleThroughputItem,
+      reporting: visibleReportingItem
+    })
+  );
   const isOperationsUser = $derived($clientSession?.role_name === 'Operations');
   const workspaceRole = $derived(getWorkspaceRole($clientSession));
   const visibleFooterLinks = $derived([
@@ -112,6 +132,7 @@
     [
       ...(visibleDashboardItem ? [visibleDashboardItem] : []),
       ...(visibleMixCalculatorItem ? [visibleMixCalculatorItem] : []),
+      ...(visibleProductCostingItem ? [visibleProductCostingItem] : []),
       ...visibleWorkingDocumentItems.slice(0, 2)
     ]
   );
@@ -124,6 +145,7 @@
       if (item.href === '/mixes') return canOpenMixMaster;
       if (item.href === '/mixes/new') return canCreateMixWorksheet;
       if (item.href === '/mix-calculator') return canOpenMixCalculator;
+      if (item.href === '/product-costing') return sessionCanOpenProductCosting($clientSession);
       if (item.href === '/editor') return canOpenEditor;
       if (item.href === '/reporting') return sessionCanOpenReporting($clientSession);
       if (item.href === '/settings') return canOpenSettings;
@@ -377,15 +399,8 @@
   {#if !showBottomNav}
     <ClientPrimaryRail
       currentPath={shellPathname}
-      primaryItems={[
+      entries={navEntries}
-        ...(visibleDashboardItem ? [visibleDashboardItem] : []),
-        ...(visibleMixCalculatorItem ? [visibleMixCalculatorItem] : []),
-        ...(visibleEditorItem ? [visibleEditorItem] : []),
-        ...(visibleThroughputItem ? [visibleThroughputItem] : []),
-        ...(visibleReportingItem ? [visibleReportingItem] : [])
-      ]}
       brandHref={workspaceHomeHref}
-      workingDocumentItems={visibleWorkingDocumentItems}
       footerItems={visibleFooterLinks}
       {appVersion}
       {currentYear}
@@ -528,6 +543,15 @@
             </a>
           {/if}
 
+          {#if visibleProductCostingItem}
+            {@const Icon = visibleProductCostingItem.icon}
+            <a class:active={matchesRoute(visibleProductCostingItem.href, page.url.pathname)} href={visibleProductCostingItem.href} onclick={() => (navOpen = false)}>
+              <span class="nav-icon"><Icon size={18} strokeWidth={1.75} /></span>
+              <span>{visibleProductCostingItem.label}</span>
+              {#if visibleProductCostingItem.badge}<span class="drawer-badge">{visibleProductCostingItem.badge}</span>{/if}
+            </a>
+          {/if}
+
           {#if visibleThroughputItem}
             {@const Icon = visibleThroughputItem.icon}
             <a class:active={matchesRoute(visibleThroughputItem.href, page.url.pathname)} href={visibleThroughputItem.href} onclick={() => (navOpen = false)}>
@@ -659,433 +683,9 @@
 {/if}
 
 <style>
-  :global(:root) {
+  /* Design tokens and the shared .ui-* surface classes now live in
-    /* ── Brand ──────────────────────────────────────────────── */
+     $lib/styles/theme.css (imported once in the root layout) so every shell,
-    --color-brand:       oklch(0.54 0.15 149);
+     client / admin / error, themes consistently in light and dark. */
-    --color-brand-hover: oklch(0.47 0.14 149);
-    --color-brand-tint:  oklch(0.98 0.02 149);
-
-    /* ── Surfaces ───────────────────────────────────────────── */
-    --color-bg-app:      oklch(0.975 0.006 150);
-    --color-bg-surface:  oklch(0.997 0.004 150);
-    --color-bg-elevated: oklch(0.99 0.005 150);
-
-    /* ── Borders ────────────────────────────────────────────── */
-    --color-border:      oklch(0.905 0.012 150);
-    --color-divider:     oklch(0.935 0.009 150);
-
-    /* ── Text ───────────────────────────────────────────────── */
-    --color-text-primary:   oklch(0.26 0.015 150);
-    --color-text-secondary: oklch(0.44 0.018 150);
-    --color-text-muted:     oklch(0.62 0.018 150);
-
-    /* ── Semantic ───────────────────────────────────────────── */
-    --color-success: #1a7f37;
-    --color-warning: #bf8700;
-    --color-error:   #cf222e;
-    --color-info:    #0969da;
-    --color-warning-tint: oklch(0.975 0.035 78);
-    --color-info-tint: oklch(0.97 0.025 230);
-
-    /* ── Legacy aliases (keep old token names working) ───────── */
-    --bg:          var(--color-bg-app);
-    --panel:       var(--color-bg-surface);
-    --panel-soft:  var(--color-bg-app);
-    --line:        var(--color-border);
-    --line-strong: var(--color-border);
-    --text:        var(--color-text-primary);
-    --muted:       var(--color-text-muted);
-    --green:       var(--color-brand);
-    --green-deep:  oklch(0.25 0.018 150);
-    --green-soft:  var(--color-brand-tint);
-    --blue-soft:   var(--color-info-tint);
-    --shadow:      none; /* flat design — use borders, not shadows */
-    --radius-panel: 1.2rem;
-    --radius-control: 0.82rem;
-    --radius-row: 0.95rem;
-    --space-page: 1.25rem;
-    --space-card: 1.15rem;
-  }
-
-  :global(html, body) {
-    margin: 0;
-    min-height: 100%;
-    background: var(--color-bg-app);
-    color: var(--color-text-primary);
-    font-family: "Inter", "Segoe UI", sans-serif;
-    font-size: 14px;
-  }
-
-  :global(*) {
-    box-sizing: border-box;
-  }
-
-  :global(h1, h2, h3, h4, h5, h6) {
-    font-family: "Inter", "Segoe UI", sans-serif;
-    letter-spacing: -0.03em;
-  }
-
-  :global(button),
-  :global(input),
-  :global(select),
-  :global(textarea) {
-    font: inherit;
-  }
-
-  :global(a) {
-    color: inherit;
-    text-decoration: none;
-  }
-
-  :global(:focus-visible) {
-    outline: 3px solid color-mix(in srgb, var(--color-brand) 38%, transparent);
-    outline-offset: 2px;
-  }
-
-  :global(.ui-stack) {
-    display: grid;
-    gap: var(--space-page);
-  }
-
-  :global(.ui-panel),
-  :global(.ui-metric-card) {
-    background: var(--panel);
-    border: 1px solid var(--line);
-    border-radius: var(--radius-panel);
-    box-shadow: var(--shadow);
-  }
-
-  :global(.ui-panel) {
-    padding: var(--space-card);
-  }
-
-  :global(.ui-panel-soft) {
-    background: var(--panel-soft);
-    border: 1px solid var(--line);
-    border-radius: var(--radius-row);
-  }
-
-  :global(.ui-section-heading) {
-    display: flex;
-    align-items: flex-start;
-    justify-content: space-between;
-    gap: 0.85rem;
-    margin-bottom: 1rem;
-  }
-
-  :global(.ui-section-heading h3),
-  :global(.ui-section-heading h4) {
-    margin: 0.18rem 0 0;
-    font-size: 1.06rem;
-    font-weight: 700;
-    letter-spacing: 0;
-  }
-
-  :global(.ui-eyebrow) {
-    margin: 0;
-    color: var(--muted);
-    font-size: 0.72rem;
-    font-weight: 700;
-    letter-spacing: 0.08em;
-    text-transform: uppercase;
-  }
-
-  :global(.ui-muted) {
-    color: var(--muted);
-  }
-
-  :global(.ui-metric-row) {
-    display: grid;
-    grid-template-columns: repeat(3, minmax(0, 1fr));
-    gap: 1rem;
-  }
-
-  :global(.ui-metric-card) {
-    padding: 1.05rem 1.1rem;
-  }
-
-  :global(.ui-metric-card span) {
-    display: block;
-    color: var(--muted);
-    font-size: 0.84rem;
-  }
-
-  :global(.ui-metric-card strong) {
-    display: block;
-    margin: 0.5rem 0 0.28rem;
-    font-size: 1.75rem;
-    font-weight: 700;
-  }
-
-  :global(.ui-metric-card p) {
-    margin: 0;
-    color: var(--muted);
-  }
-
-  :global(.ui-button) {
-    display: inline-flex;
-    align-items: center;
-    justify-content: center;
-    min-height: 2.6rem;
-    padding: 0.72rem 0.9rem;
-    border-radius: var(--radius-control);
-    font-weight: 600;
-    cursor: pointer;
-    transition: background-color 160ms cubic-bezier(0.22, 1, 0.36, 1), border-color 160ms cubic-bezier(0.22, 1, 0.36, 1), color 160ms cubic-bezier(0.22, 1, 0.36, 1);
-  }
-
-  :global(.ui-button.primary) {
-    border: 1px solid var(--color-brand);
-    color: oklch(0.99 0.004 150);
-    background: var(--color-brand);
-  }
-
-  :global(.ui-button.primary:hover:not(:disabled)) {
-    background: var(--color-brand-hover);
-    border-color: var(--color-brand-hover);
-  }
-
-  :global(.ui-button.secondary) {
-    border: 1px solid var(--line-strong);
-    color: var(--text);
-    background: var(--panel);
-  }
-
-  :global(.ui-button.secondary:hover:not(:disabled)) {
-    background: var(--panel-soft);
-  }
-
-  :global(.ui-button:disabled) {
-    opacity: 0.55;
-    cursor: not-allowed;
-  }
-
-  :global(.ui-pill) {
-    display: inline-flex;
-    align-items: center;
-    justify-content: center;
-    width: fit-content;
-    border-radius: 999px;
-    padding: 0.4rem 0.74rem;
-    font-size: 0.82rem;
-    font-weight: 600;
-    text-transform: capitalize;
-    white-space: nowrap;
-  }
-
-  :global(.ui-pill.positive) {
-    color: var(--green-deep);
-    background: var(--green-soft);
-  }
-
-  :global(.ui-pill.warning) {
-    color: oklch(0.45 0.11 69);
-    background: var(--color-warning-tint);
-  }
-
-  :global(.ui-pill.neutral) {
-    color: var(--color-text-secondary);
-    background: color-mix(in srgb, var(--panel-soft) 74%, var(--panel));
-  }
-
-  :global(.ui-table-wrap) {
-    overflow-x: auto;
-  }
-
-  :global(.ui-table) {
-    width: 100%;
-    min-width: 48rem;
-    border-collapse: separate;
-    border-spacing: 0 0.65rem;
-  }
-
-  :global(.ui-table th),
-  :global(.ui-table td) {
-    padding: 0.9rem 0.95rem;
-    text-align: left;
-    white-space: nowrap;
-  }
-
-  :global(.ui-table th) {
-    color: var(--muted);
-    font-size: 0.74rem;
-    font-weight: 700;
-    letter-spacing: 0.06em;
-    text-transform: uppercase;
-  }
-
-  :global(.ui-table tbody td) {
-    background: var(--panel-soft);
-    border-top: 1px solid var(--line);
-    border-bottom: 1px solid var(--line);
-  }
-
-  :global(.ui-table tbody td:first-child) {
-    border-left: 1px solid var(--line);
-    border-radius: var(--radius-row) 0 0 var(--radius-row);
-  }
-
-  :global(.ui-table tbody td:last-child) {
-    border-right: 1px solid var(--line);
-    border-radius: 0 var(--radius-row) var(--radius-row) 0;
-  }
-
-  :global(.ui-table-identity) {
-    display: flex;
-    align-items: center;
-    gap: 0.74rem;
-    min-width: 0;
-  }
-
-  :global(.ui-row-mark) {
-    width: 2.25rem;
-    height: 2.25rem;
-    display: inline-flex;
-    align-items: center;
-    justify-content: center;
-    flex-shrink: 0;
-    border-radius: 0.76rem;
-    color: oklch(0.99 0.004 150);
-    background: var(--green-deep);
-    font-size: 0.72rem;
-    font-weight: 700;
-    letter-spacing: 0.05em;
-  }
-
-  :global(.ui-table-identity strong),
-  :global(.ui-number-block strong) {
-    display: block;
-    font-size: 0.94rem;
-  }
-
-  :global(.ui-table-identity span),
-  :global(.ui-number-block span) {
-    display: block;
-    margin-top: 0.16rem;
-    color: var(--muted);
-    font-size: 0.8rem;
-  }
-
-  :global(.ui-number-block) {
-    display: grid;
-    gap: 0.08rem;
-  }
-
-  :global(.ui-form-grid) {
-    display: grid;
-    grid-template-columns: repeat(2, minmax(0, 1fr));
-    gap: 0.85rem;
-  }
-
-  :global(.ui-form-grid.compact) {
-    grid-template-columns: repeat(3, minmax(0, 1fr));
-  }
-
-  :global(.ui-field) {
-    display: grid;
-    gap: 0.36rem;
-    color: var(--color-text-secondary);
-    font-size: 0.88rem;
-    font-weight: 600;
-  }
-
-  :global(.ui-field input),
-  :global(.ui-field textarea),
-  :global(.ui-field select) {
-    width: 100%;
-    padding: 0.82rem 0.9rem;
-    border: 1px solid var(--line-strong);
-    border-radius: var(--radius-control);
-    background: var(--panel-soft);
-    color: var(--text);
-    transition: background-color 160ms cubic-bezier(0.22, 1, 0.36, 1), border-color 160ms cubic-bezier(0.22, 1, 0.36, 1), box-shadow 160ms cubic-bezier(0.22, 1, 0.36, 1);
-  }
-
-  :global(.ui-field input:focus),
-  :global(.ui-field textarea:focus),
-  :global(.ui-field select:focus) {
-    outline: none;
-    border-color: var(--color-brand);
-    background: var(--panel);
-    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-brand) 18%, transparent);
-  }
-
-  @media (max-width: 980px) {
-    :global(.ui-metric-row) {
-      grid-template-columns: 1fr;
-    }
-  }
-
-  @media (max-width: 760px) {
-    :global(.ui-section-heading) {
-      flex-direction: column;
-      align-items: flex-start;
-    }
-
-    :global(.ui-table) {
-      min-width: 0;
-      border-spacing: 0;
-    }
-
-    :global(.ui-table),
-    :global(.ui-table thead),
-    :global(.ui-table tbody),
-    :global(.ui-table tr),
-    :global(.ui-table td) {
-      display: block;
-      width: 100%;
-    }
-
-    :global(.ui-table thead) {
-      display: none;
-    }
-
-    :global(.ui-table tbody) {
-      display: grid;
-      gap: 0.85rem;
-    }
-
-    :global(.ui-table tbody tr) {
-      padding: 0.3rem;
-      border: 1px solid var(--line);
-      border-radius: var(--radius-row);
-      background: var(--panel-soft);
-    }
-
-    :global(.ui-table tbody td) {
-      padding: 0.76rem 0.8rem;
-      white-space: normal;
-      border: none;
-      border-radius: 0;
-      background: transparent;
-    }
-
-    :global(.ui-table tbody td:first-child),
-    :global(.ui-table tbody td:last-child) {
-      border: none;
-      border-radius: 0;
-    }
-
-    :global(.ui-table tbody td + td) {
-      border-top: 1px solid var(--line);
-    }
-
-    :global(.ui-table tbody td::before) {
-      content: attr(data-label);
-      display: block;
-      margin-bottom: 0.35rem;
-      color: var(--muted);
-      font-size: 0.72rem;
-      font-weight: 700;
-      letter-spacing: 0.06em;
-      text-transform: uppercase;
-    }
-
-    :global(.ui-form-grid),
-    :global(.ui-form-grid.compact) {
-      grid-template-columns: 1fr;
-    }
-  }
 
   .app-shell {
     display: grid;
@@ -1126,7 +726,7 @@
     align-items: center;
     justify-content: center;
     flex-shrink: 0;
-    color: #6d7d74;
+    color: var(--color-text-muted);
     background: transparent;
     border-radius: 0.55rem;
     width: 1.6rem;
@@ -1210,13 +810,13 @@
   }
 
   .search-placeholder {
-    color: #93a098;
+    color: var(--color-text-muted);
   }
 
   .search-icon {
     width: 0.82rem;
     height: 0.82rem;
-    border: 2px solid #98a59d;
+    border: 2px solid var(--color-text-muted);
     border-radius: 999px;
   }
 
@@ -1228,7 +828,7 @@
     width: 0.42rem;
     height: 2px;
     border-radius: 999px;
-    background: #98a59d;
+    background: var(--color-text-muted);
     transform: rotate(45deg);
   }
 
@@ -1237,7 +837,7 @@
     border: 1px solid var(--line-strong);
     border-radius: 0.42rem;
     color: var(--muted);
-    background: #fff;
+    background: var(--color-bg-surface);
     font-size: 0.76rem;
   }
 
@@ -1257,7 +857,7 @@
     border: none;
     border-radius: 0.82rem;
     background: transparent;
-    color: #304038;
+    color: var(--color-text-primary);
     cursor: pointer;
     transition: background-color 160ms ease;
   }
@@ -1301,8 +901,8 @@
 
   /* `.nav-icon.muted` is kept for the bottom-nav (still uses letter labels). */
   .nav-icon.muted {
-    color: #fff;
+    color: var(--color-on-brand);
-    background: linear-gradient(135deg, #95a39b 0%, #6e7c73 100%);
+    background: var(--color-brand);
   }
 
   .main-shell {
@@ -1334,9 +934,8 @@
     padding: 0.4rem;
     border: 1px solid var(--color-border);
     border-radius: 0.96rem;
-    background: rgba(255, 255, 255, 0.98);
+    background: var(--color-bg-elevated);
     box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
-    backdrop-filter: blur(10px);
   }
 
   .quick-fab-wrap {
@@ -1357,7 +956,7 @@
     border: none;
     border-radius: 999px;
     background: var(--color-brand);
-    color: #fff;
+    color: var(--color-on-brand);
     box-shadow: none;
     font-weight: 700;
     letter-spacing: 0.01em;
@@ -1408,7 +1007,7 @@
   .menu-panel button {
     padding: 0.72rem 0.78rem;
     border-radius: 0.78rem;
-    color: #304038;
+    color: var(--color-text-primary);
     text-align: left;
     background: transparent;
     border: none;
@@ -1585,11 +1184,10 @@
       grid-template-columns: repeat(5, minmax(0, 1fr));
       gap: 0.5rem;
       padding: 0.6rem;
-      border: 1px solid rgba(217, 228, 221, 0.92);
+      border: 1px solid var(--color-border);
       border-radius: 1.35rem;
-      background: rgba(255, 255, 255, 0.96);
+      background: var(--color-bg-surface);
       box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
-      backdrop-filter: blur(16px);
     }
 
     .quick-fab-wrap {
@@ -1606,7 +1204,7 @@
       border: none;
       border-radius: 1rem;
       background: transparent;
-      color: #51635a;
+      color: var(--color-text-secondary);
       text-align: center;
       font-size: 0.74rem;
       font-weight: 700;
@@ -1626,14 +1224,14 @@
       align-items: center;
       justify-content: center;
       border-radius: 0.78rem;
-      color: #fff;
+      color: var(--color-on-brand);
-      background: var(--green-deep);
+      background: var(--color-brand);
       font-size: 0.66rem;
       letter-spacing: 0.04em;
     }
 
     .bottom-nav-icon.muted {
-      background: #8b949e;
+      background: var(--color-text-muted);
     }
 
     .bottom-drawer {
@@ -1647,10 +1245,8 @@
       padding: 0.85rem 1rem calc(6.6rem + env(safe-area-inset-bottom));
       border-top: 1px solid var(--line);
       border-radius: 1.6rem 1.6rem 0 0;
-      background:
+      background: var(--color-bg-surface);
-        linear-gradient(180deg, rgba(248, 251, 249, 0.98) 0%, rgba(255, 255, 255, 0.98) 100%);
       box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.06);
-      backdrop-filter: blur(16px);
     }
 
     .drawer-handle {
@@ -1658,7 +1254,7 @@
       height: 0.34rem;
       margin: 0 auto;
       border-radius: 999px;
-      background: #c8d4ce;
+      background: var(--color-border);
     }
 
     .drawer-header {
@@ -1673,7 +1269,7 @@
     }
 
     :global(.drawer-search) {
-      background: #fff;
+      background: var(--color-bg-surface);
     }
 
     .drawer-grid {
@@ -1695,23 +1291,23 @@
       padding: 0.82rem 0.86rem;
       border: 1px solid var(--line);
       border-radius: 0.96rem;
-      background: rgba(255, 255, 255, 0.88);
+      background: var(--color-bg-surface);
-      color: #304038;
+      color: var(--color-text-primary);
       text-align: left;
       cursor: pointer;
     }
 
     .drawer-section a.active {
-      color: var(--green-deep);
+      color: var(--color-brand-hover);
-      background: var(--green-soft);
+      background: color-mix(in srgb, var(--color-brand) 11%, var(--color-bg-surface));
     }
 
     .drawer-badge {
       margin-left: auto;
       padding: 0.08rem 0.4rem;
       border-radius: 999px;
-      background: #fdf0d2;
+      background: var(--color-warning-tint);
-      color: #8a5a00;
+      color: var(--color-warning-text);
       font-size: 0.62rem;
       font-weight: 700;
       letter-spacing: 0.06em;
@@ -1747,8 +1343,8 @@
       padding: 0.82rem 0.9rem;
       border: 1px solid var(--line);
       border-radius: 0.96rem;
-      background: rgba(255, 255, 255, 0.88);
+      background: var(--color-bg-surface);
-      color: #304038;
+      color: var(--color-text-primary);
       font-weight: 600;
     }
 

frontend/src/lib/components/MixCalculatorPrintDocument.svelte

@@ -62,8 +62,8 @@
     <div><span>Total bags</span><strong>{formatNumber(session.total_bags, 2)}</strong><small>{session.product_unit_of_measure}</small></div>
     <div><span>Prepared by</span><strong>{session.prepared_by_name}</strong><small>{formatDate(session.mix_date)}</small></div>
     <div><span>Client</span><strong>{session.client_name}</strong></div>
-    <div><span>Product</span><strong>{session.product_name}</strong></div>
+    <div><span>Mix</span><strong>{session.product_name}</strong></div>
-    <div><span>Mix source</span><strong>{session.mix_name}</strong></div>
+    <div><span>Formula source</span><strong>{session.mix_name}</strong></div>
     <div><span>Unit size</span><strong>{formatNumber(session.product_unit_size_kg, 2)}kg</strong></div>
     <div><span>Batch size</span><strong>{formatNumber(session.batch_size_kg, 2)}kg</strong></div>
   </section>

frontend/src/lib/components/MixCalculatorPrintSheet.svelte

@@ -1,23 +1,62 @@
 <script lang="ts">
+  import { onDestroy, onMount } from 'svelte';
   import { api } from '$lib/api';
-  import MixCalculatorPrintDocument from '$lib/components/MixCalculatorPrintDocument.svelte';
   import type { MixCalculatorSession } from '$lib/types';
 
-  let { session }: { session: MixCalculatorSession } = $props();
+  let { session, autoPrint = true }: { session: MixCalculatorSession; autoPrint?: boolean } = $props();
+  let pdfUrl = $state<string | null>(null);
+  let loading = $state(true);
+  let error = $state('');
+  let printAfterLoad = $state(false);
+  let pdfFrame = $state<HTMLIFrameElement | null>(null);
 
   const printableTitle = $derived(
     `MixCalculator_${session.client_name}_${session.product_name}_${session.mix_date}_${session.session_number}`.replace(/[^\w.-]+/g, '_')
   );
 
-  async function openPdf() {
+  function revokePdfUrl() {
+    if (pdfUrl) {
+      URL.revokeObjectURL(pdfUrl);
+      pdfUrl = null;
+    }
+  }
+
+  async function loadPdf() {
+    loading = true;
+    error = '';
+    revokePdfUrl();
+
+    try {
       const blob = await api.mixCalculatorSessionPdf(session.id);
-    const url = URL.createObjectURL(blob);
+      pdfUrl = URL.createObjectURL(blob);
-    window.open(url, '_blank', 'noopener,noreferrer');
+      printAfterLoad = autoPrint;
-    setTimeout(() => URL.revokeObjectURL(url), 60_000);
+    } catch (loadError) {
+      error = loadError instanceof Error ? loadError.message : 'Unable to load the PDF preview.';
+    } finally {
+      loading = false;
+    }
+  }
+
+  function printPage() {
+    if (!pdfUrl) {
+      printAfterLoad = true;
+      loadPdf();
+      return;
+    }
+
+    pdfFrame?.contentWindow?.focus();
+    pdfFrame?.contentWindow?.print();
+  }
+
+  function handlePreviewLoaded() {
+    if (printAfterLoad) {
+      printAfterLoad = false;
+      requestAnimationFrame(() => printPage());
+    }
   }
 
   async function downloadPdf() {
-    const blob = await api.mixCalculatorSessionPdf(session.id);
+    const blob = pdfUrl ? await fetch(pdfUrl).then((response) => response.blob()) : await api.mixCalculatorSessionPdf(session.id);
     const url = URL.createObjectURL(blob);
     const anchor = document.createElement('a');
     anchor.href = url;
@@ -27,6 +66,14 @@
     anchor.remove();
     URL.revokeObjectURL(url);
   }
+
+  onMount(() => {
+    loadPdf();
+  });
+
+  onDestroy(() => {
+    revokePdfUrl();
+  });
 </script>
 
 <svelte:head>
@@ -36,11 +83,28 @@
 <section class="print-page">
   <div class="print-toolbar">
     <a class="secondary-button" href={`/mix-calculator/${session.id}`}>Back to session</a>
-    <button class="primary-button" type="button" onclick={openPdf}>Open Styled PDF</button>
+    <button class="primary-button" type="button" disabled={!pdfUrl && loading} onclick={printPage}>Print</button>
-    <button class="secondary-button" type="button" onclick={downloadPdf}>Download PDF</button>
+    <button class="secondary-button" type="button" disabled={!pdfUrl && loading} onclick={downloadPdf}>Download PDF</button>
   </div>
 
-  <MixCalculatorPrintDocument session={session} generatedAt={new Date().toISOString()} />
+  <div class="pdf-preview-shell">
+    {#if loading}
+      <div class="preview-state">Loading PDF preview...</div>
+    {:else if error}
+      <div class="preview-state error">
+        <strong>PDF preview unavailable</strong>
+        <span>{error}</span>
+        <button class="secondary-button" type="button" onclick={loadPdf}>Retry</button>
+      </div>
+    {:else if pdfUrl}
+      <iframe
+        bind:this={pdfFrame}
+        src={pdfUrl}
+        title={`${printableTitle} PDF preview`}
+        onload={handlePreviewLoaded}
+      ></iframe>
+    {/if}
+  </div>
 </section>
 
 <style>
@@ -57,6 +121,7 @@
     display: flex;
     justify-content: flex-end;
     gap: 0.75rem;
+    width: min(100%, 210mm);
   }
 
   .primary-button,
@@ -82,6 +147,52 @@
     color: #304038;
   }
 
+  button:disabled {
+    cursor: wait;
+    opacity: 0.65;
+  }
+
+  .pdf-preview-shell {
+    width: min(100%, 210mm);
+    aspect-ratio: 210 / 297;
+    border: 1px solid var(--line-strong);
+    border-radius: 0.75rem;
+    background: #fff;
+    overflow: hidden;
+    box-shadow: 0 18px 50px rgba(25, 35, 30, 0.16);
+  }
+
+  iframe {
+    width: 100%;
+    height: 100%;
+    border: 0;
+    background: #fff;
+  }
+
+  .preview-state {
+    display: grid;
+    place-items: center;
+    gap: 0.75rem;
+    height: 100%;
+    padding: 2rem;
+    color: var(--color-text-secondary);
+    text-align: center;
+    font-weight: 600;
+  }
+
+  .preview-state.error {
+    align-content: center;
+  }
+
+  .preview-state strong,
+  .preview-state span {
+    display: block;
+  }
+
+  .preview-state strong {
+    color: var(--color-text-primary);
+  }
+
   @media (max-width: 900px) {
     .print-toolbar {
       justify-content: stretch;
@@ -93,16 +204,9 @@
   }
 
   @media print {
-    :global(body) {
+    .print-page,
-      background: #fff;
+    .print-toolbar,
-    }
+    .pdf-preview-shell {
-
-    .print-page {
-      padding: 0;
-      background: #fff;
-    }
-
-    .print-toolbar {
       display: none;
     }
   }

frontend/src/lib/components/ThemeToggle.svelte

@@ -0,0 +1,42 @@
+<script lang="ts">
+  import { Moon, Sun } from 'lucide-svelte';
+  import { resolvedTheme, toggleTheme } from '$lib/theme';
+
+  const isDark = $derived($resolvedTheme === 'dark');
+</script>
+
+<button
+  class="theme-toggle"
+  type="button"
+  onclick={toggleTheme}
+  aria-label={isDark ? 'Switch to light mode' : 'Switch to dark mode'}
+  title={isDark ? 'Switch to light mode' : 'Switch to dark mode'}
+>
+  {#if isDark}
+    <Sun size={18} strokeWidth={1.75} />
+  {:else}
+    <Moon size={18} strokeWidth={1.75} />
+  {/if}
+</button>
+
+<style>
+  .theme-toggle {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    width: 2.6rem;
+    height: 2.6rem;
+    flex-shrink: 0;
+    border: 1px solid var(--color-border);
+    border-radius: 0.82rem;
+    background: var(--color-bg-surface);
+    color: var(--color-text-secondary);
+    cursor: pointer;
+    transition: background-color 140ms ease, color 140ms ease, border-color 140ms ease;
+  }
+
+  .theme-toggle:hover {
+    background: var(--color-surface-hover);
+    color: var(--color-text-primary);
+  }
+</style>

frontend/src/lib/components/mix-calculator/MixCalculatorEditor.svelte

@@ -1,7 +1,8 @@
 <script lang="ts">
+  import { onDestroy } from 'svelte';
   import { api } from '$lib/api';
-  import MixCalculatorPrintDocument from '$lib/components/MixCalculatorPrintDocument.svelte';
   import { featureFlags } from '$lib/features';
+  import { formatNumber } from '$lib/format';
   import { clientSession, hasModuleAccess } from '$lib/session';
   import { toast } from '$lib/toast';
   import type {
@@ -52,8 +53,11 @@
   let notes = $state(initialNotesValue());
   let preview = $state<MixCalculatorPreview | MixCalculatorSession | null>(initialPreviewValue());
   let formError = $state('');
-  let formHint = $state('Select a mix date and prepared by name, then choose a client to unlock products.');
+  let formHint = $state('Select a mix date and prepared by name, then choose a client to unlock mixes.');
   let previewLoading = $state(false);
+  let printPdfUrl = $state<string | null>(null);
+  let printFrame = $state<HTMLIFrameElement | null>(null);
+  let printAfterPdfLoad = $state(false);
 
   const canEdit = $derived(hasModuleAccess($clientSession, 'mix_calculator', 'edit'));
   const availableClients = $derived(
@@ -91,14 +95,6 @@
     }
   });
 
-  function formatNumber(value: number | null | undefined, digits = 2) {
-    if (value === null || value === undefined) {
-      return 'N/A';
-    }
-
-    return value.toFixed(digits);
-  }
-
   function buildPayload(): MixCalculatorCreateInput | null {
     formError = '';
     formHint = '';
@@ -115,13 +111,13 @@
       return null;
     }
     if (!clientName) {
-      formError = 'Select a client to unlock matching products.';
+      formError = 'Select a client to unlock matching mixes.';
-      formHint = 'Products stay disabled until a client is selected.';
+      formHint = 'Mixes stay disabled until a client is selected.';
       return null;
     }
     if (!productId) {
-      formError = 'Select a product.';
+      formError = 'Select a mix.';
-      formHint = 'Pick one of the products available for the selected client.';
+      formHint = 'Pick one of the mixes available for the selected client.';
       return null;
     }
     if (!Number.isFinite(numericBatchSize) || numericBatchSize <= 0) {
@@ -171,26 +167,26 @@
     notes = '';
     preview = null;
     formError = '';
-    formHint = 'Select a mix date and prepared by name, then choose a client to unlock products.';
+    formHint = 'Select a mix date and prepared by name, then choose a client to unlock mixes.';
   }
 
   $effect(() => {
     if (!clientName) {
-      formHint = 'Select a client to unlock the product list.';
+      formHint = 'Select a client to unlock the mix list.';
       return;
     }
 
     if (!filteredProducts.length) {
-      formHint = `No products are available for ${clientName}.`;
+      formHint = `No mixes are available for ${clientName}.`;
       return;
     }
 
     if (!productId) {
-      formHint = 'Select a product for the chosen client.';
+      formHint = 'Select a mix for the chosen client.';
       return;
     }
 
-    formHint = `Ready to calculate ${selectedProduct?.product_name ?? 'the selected product'}.`;
+    formHint = `Ready to calculate ${selectedProduct?.product_name ?? 'the selected mix'}.`;
   });
 
   async function downloadPdf() {
@@ -219,27 +215,53 @@
     }
   }
 
-  async function openPdf() {
+  function revokePrintPdfUrl() {
-    const tid = toast.loading('Opening styled PDF…');
+    if (printPdfUrl) {
-    try {
+      URL.revokeObjectURL(printPdfUrl);
+      printPdfUrl = null;
+    }
+  }
+
+  async function printCurrent() {
+    if (!preview) {
+      toast.error('Calculate the mix before printing.');
+      return;
+    }
+
     const payload = buildPayload();
     if (!payload) {
-        toast.dismiss(tid);
       toast.error(formError || 'Complete the mix details first.');
       return;
     }
 
-      const blob = await api.previewMixCalculatorPdf(payload);
+    const tid = toast.loading('Preparing print...');
-      const url = URL.createObjectURL(blob);
+    try {
-      window.open(url, '_blank', 'noopener,noreferrer');
+      const blob = initialSession ? await api.mixCalculatorSessionPdf(initialSession.id) : await api.previewMixCalculatorPdf(payload);
-      setTimeout(() => URL.revokeObjectURL(url), 60_000);
+      revokePrintPdfUrl();
+      printAfterPdfLoad = true;
+      printPdfUrl = URL.createObjectURL(blob);
       toast.dismiss(tid);
     } catch (error) {
       toast.dismiss(tid);
-      toast.error(error instanceof Error ? error.message : 'Unable to open the styled PDF.');
+      toast.error(error instanceof Error ? error.message : 'Unable to prepare the PDF for printing.');
     }
   }
 
+  function printLoadedPdf() {
+    printFrame?.contentWindow?.focus();
+    printFrame?.contentWindow?.print();
+  }
+
+  function handlePrintFrameLoad() {
+    if (printAfterPdfLoad) {
+      printAfterPdfLoad = false;
+      requestAnimationFrame(printLoadedPdf);
+    }
+  }
+
+  onDestroy(() => {
+    revokePrintPdfUrl();
+  });
 </script>
 
 {#if !canEdit && !initialSession}
@@ -258,8 +280,7 @@
         <a class="secondary-button" href="/mix-calculator">Session history</a>
       {/if}
       {#if initialSession}
-        <a class="secondary-button" href={`/mix-calculator/${initialSession.id}/print`}>Open PDF page</a>
+        <a class="primary-button" href={`/mix-calculator/${initialSession.id}/print`}>Print</a>
-        <button class="primary-button" type="button" onclick={openPdf}>Open PDF in new tab</button>
         <button class="secondary-button" type="button" onclick={downloadPdf}>Download PDF</button>
       {/if}
     </section>
@@ -270,7 +291,7 @@
       <div class="section-header">
         <div>
           <h3>Session Inputs</h3>
-          <p>Batch size drives the scale factor. Total bags are derived from the selected product unit size.</p>
+          <p>Batch size drives the scale factor. Total bags are derived from the selected mix unit size.</p>
         </div>
         {#if selectedProduct}
           <div class="product-pill">
@@ -301,7 +322,7 @@
 
         <label>
           <span>Client</span>
-          <select bind:value={clientName} disabled={!canEdit} title="Select a client to unlock matching products.">
+          <select bind:value={clientName} disabled={!canEdit} title="Select a client to unlock matching mixes.">
             <option value="">Select a client</option>
             {#each availableClients as client}
               <option value={client}>{client}</option>
@@ -310,16 +331,16 @@
         </label>
 
         <label>
-          <span>Product</span>
+          <span>Mix Name</span>
           <select
             bind:value={productId}
             disabled={!canEdit || !clientName || !filteredProducts.length}
-            title={!clientName ? 'Select a client first.' : !filteredProducts.length ? 'No products are available for the selected client.' : 'Select a product.'}
+            title={!clientName ? 'Select a client first.' : !filteredProducts.length ? 'No mixes are available for the selected client.' : 'Select a mix.'}
           >
-            <option value={0}>Select a product</option>
+            <option value={0}>Select a mix</option>
             {#each filteredProducts as product}
               <option value={product.product_id}>
-                {product.product_name} · {product.mix_name} · {product.unit_of_measure}
+                {product.product_name}
               </option>
             {/each}
           </select>
@@ -338,8 +359,8 @@
 
       {#if canEdit && selectedProduct}
         <div class="calculation-note">
-          <strong>Source mix</strong>
+          <strong>Formula source</strong>
-          <span>{selectedProduct.mix_name} totals {formatNumber(selectedProduct.mix_total_kg, 2)}kg. Scale factor = batch size / source mix total.</span>
+          <span>{selectedProduct.product_name} totals {formatNumber(selectedProduct.mix_total_kg, 2)}kg. Scale factor = batch size / source formula total.</span>
         </div>
       {/if}
 
@@ -361,15 +382,19 @@
     <MixCalculatorResultsPanel
       preview={preview}
       sessionNumber={initialSession?.session_number ?? null}
-      onOpenPdf={preview ? openPdf : null}
+      onPrint={preview ? printCurrent : null}
       onDownloadPdf={preview ? downloadPdf : null}
     />
   </section>
 
-  {#if preview}
+  {#if printPdfUrl}
-    <section class="print-only" aria-hidden="true">
+    <iframe
-      <MixCalculatorPrintDocument session={preview} />
+      bind:this={printFrame}
-    </section>
+      class="print-pdf-frame"
+      src={printPdfUrl}
+      title="Mix calculator PDF print frame"
+      onload={handlePrintFrameLoad}
+    ></iframe>
   {/if}
 {/if}
 
@@ -636,33 +661,14 @@
     }
   }
 
-  .print-only {
+  .print-pdf-frame {
-    display: none;
+    position: fixed;
-  }
+    right: 0;
-
+    bottom: 0;
-  @media print {
+    width: 1px;
-    :global(body) {
+    height: 1px;
-      background: #fff !important;
+    border: 0;
-      margin: 0 !important;
+    opacity: 0;
-    }
+    pointer-events: none;
-
-    :global(body *) {
-      visibility: hidden !important;
-    }
-
-    .print-only,
-    .print-only :global(*) {
-      visibility: visible !important;
-    }
-
-    .print-only {
-      display: block;
-      position: absolute;
-      inset: 0;
-      padding: 0;
-      background: #fff;
-      color: #1a2421;
-      font-family: inherit;
-    }
   }
 </style>

frontend/src/lib/components/mix-calculator/MixCalculatorResultsPanel.svelte

@@ -1,32 +1,20 @@
 <script lang="ts">
   import { Download, Printer } from 'lucide-svelte';
+  import { formatDate, formatNumber } from '$lib/format';
   import type { MixCalculatorPreview, MixCalculatorSession } from '$lib/types';
 
   let {
     preview,
     sessionNumber = null,
-    onOpenPdf = null,
+    onPrint = null,
     onDownloadPdf = null
   }: {
     preview: MixCalculatorPreview | MixCalculatorSession | null;
     sessionNumber?: string | null;
-    onOpenPdf?: (() => void) | null;
+    onPrint?: (() => void) | null;
     onDownloadPdf?: (() => void) | null;
   } = $props();
 
-  function formatDate(value: string) {
-    return new Intl.DateTimeFormat('en-NZ', {
-      dateStyle: 'medium'
-    }).format(new Date(value));
-  }
-
-  function formatNumber(value: number | null | undefined, digits = 2) {
-    if (value === null || value === undefined) {
-      return 'N/A';
-    }
-
-    return value.toFixed(digits);
-  }
 </script>
 
 <article class="result-card">
@@ -76,11 +64,11 @@
         <strong>{preview.client_name}</strong>
       </div>
       <div>
-        <span>Product</span>
+        <span>Mix</span>
         <strong>{preview.product_name}</strong>
       </div>
       <div>
-        <span>Mix source</span>
+        <span>Formula source</span>
         <strong>{preview.mix_name}</strong>
       </div>
       <div>
@@ -111,7 +99,7 @@
     </div>
 
     <div class="output-actions">
-      <button class="primary-button" disabled={!onOpenPdf} type="button" onclick={() => onOpenPdf?.()}>
+      <button class="primary-button" disabled={!onPrint} type="button" onclick={() => onPrint?.()}>
         <Printer size={18} strokeWidth={1.9} aria-hidden="true" />
         Print
       </button>
@@ -132,7 +120,7 @@
           <span></span><span></span><span></span>
         </div>
         <strong>No calculation yet</strong>
-        <span>Choose a client, product, date, and batch size on the left, then click Calculate mix.</span>
+        <span>Choose a client, mix, date, and batch size on the left, then click Calculate mix.</span>
       </div>
       <div class="empty-shimmer-rows">
         {#each [1,2,3,4,5] as _}

frontend/src/lib/components/navigation/AppNavSection.svelte

@@ -73,7 +73,7 @@
     border: none;
     border-radius: 0.7rem;
     background: transparent;
-    color: var(--nav-item-color, #3a4a41);
+    color: var(--nav-item-color, var(--color-text-secondary));
     font-size: var(--nav-item-size, 0.93rem);
     font-weight: var(--nav-item-weight, 500);
     text-align: left;
@@ -83,14 +83,14 @@
 
   .nav-list a:hover,
   .nav-button:hover {
-    background: var(--nav-item-hover-bg, var(--panel-soft));
+    background: var(--nav-item-hover-bg, var(--color-surface-hover));
-    color: var(--nav-item-hover-color, #304038);
+    color: var(--nav-item-hover-color, var(--color-text-primary));
   }
 
   .nav-list a.active,
   .nav-button.active {
     background: var(--nav-item-active-bg, var(--color-brand));
-    color: var(--nav-item-active-color, #fff);
+    color: var(--nav-item-active-color, var(--color-on-brand));
     font-weight: var(--nav-item-active-weight, 600);
   }
 
@@ -111,8 +111,8 @@
     flex-shrink: 0;
     padding: 0.08rem 0.4rem;
     border-radius: 999px;
-    background: #fdf0d2;
+    background: var(--color-warning-tint);
-    color: #8a5a00;
+    color: var(--color-warning-text);
     font-size: 0.62rem;
     font-weight: 700;
     letter-spacing: 0.06em;
@@ -122,8 +122,8 @@
 
   .nav-list a.active .nav-badge,
   .nav-button.active .nav-badge {
-    background: rgba(255, 255, 255, 0.92);
+    background: var(--color-warning-tint);
-    color: #8a5a00;
+    color: var(--color-warning-text);
   }
 
   .nav-icon {
@@ -133,18 +133,18 @@
     flex-shrink: 0;
     width: 1.6rem;
     height: 1.6rem;
-    color: var(--nav-icon-color, #6d7d74);
+    color: var(--nav-icon-color, var(--color-text-muted));
     border-radius: 0.55rem;
     transition: color 140ms ease;
   }
 
   .nav-list a:hover .nav-icon,
   .nav-button:hover .nav-icon {
-    color: var(--nav-icon-hover-color, #304038);
+    color: var(--nav-icon-hover-color, var(--color-text-secondary));
   }
 
   .nav-list a.active .nav-icon,
   .nav-button.active .nav-icon {
-    color: var(--nav-icon-active-color, #fff);
+    color: var(--nav-icon-active-color, var(--color-on-brand));
   }
 </style>

frontend/src/lib/components/navigation/AppSecondaryRail.svelte

@@ -75,23 +75,23 @@
     height: 100%;
     min-height: calc(100vh - 8.5rem);
     padding: 0;
-    background: color-mix(in srgb, var(--panel-soft) 72%, white);
+    background: color-mix(in srgb, var(--panel-soft) 60%, var(--color-bg-surface));
     border-right: 1px solid var(--line);
     overflow-y: auto;
-    --nav-section-label-color: color-mix(in srgb, var(--muted) 88%, #a3aea7);
+    --nav-section-label-color: var(--color-text-muted);
     --nav-section-label-size: 0.66rem;
     --nav-section-label-spacing: 0.14em;
-    --nav-item-color: #66756d;
+    --nav-item-color: var(--color-text-secondary);
     --nav-item-size: 0.88rem;
     --nav-item-weight: 450;
-    --nav-item-hover-bg: color-mix(in srgb, var(--panel) 72%, transparent);
+    --nav-item-hover-bg: var(--color-surface-hover);
-    --nav-item-hover-color: #425148;
+    --nav-item-hover-color: var(--color-text-primary);
-    --nav-item-active-bg: color-mix(in srgb, var(--color-brand) 7%, transparent);
+    --nav-item-active-bg: color-mix(in srgb, var(--color-brand) 11%, transparent);
-    --nav-item-active-color: #22352d;
+    --nav-item-active-color: var(--color-brand-hover);
     --nav-item-active-weight: 560;
-    --nav-item-active-marker: color-mix(in srgb, var(--color-brand) 28%, transparent);
+    --nav-item-active-marker: color-mix(in srgb, var(--color-brand) 32%, transparent);
-    --nav-icon-color: #8a9790;
+    --nav-icon-color: var(--color-text-muted);
-    --nav-icon-hover-color: #607067;
+    --nav-icon-hover-color: var(--color-text-secondary);
     --nav-icon-active-color: var(--color-brand);
   }
 

frontend/src/lib/components/navigation/ClientPrimaryRail.svelte

@@ -1,14 +1,19 @@
 <script lang="ts">
-  import { LogOut, Settings } from 'lucide-svelte';
+  import { ChevronDown, LogOut, Settings } from 'lucide-svelte';
+  import type { ComponentType } from 'svelte';
 
-  import AppNavSection from '$lib/components/navigation/AppNavSection.svelte';
+  import {
-  import { matchesRoute, type FooterLink, type NavItem } from '$lib/navigation/client-navigation';
+    groupHasActiveChild,
+    matchesRoute,
+    type FooterLink,
+    type NavEntry,
+    type NavItem
+  } from '$lib/navigation/client-navigation';
 
   let {
     brandHref,
     currentPath,
-    primaryItems,
+    entries,
-    workingDocumentItems,
     footerItems,
     appVersion,
     currentYear,
@@ -18,8 +23,7 @@
   }: {
     brandHref: string;
     currentPath: string;
-    primaryItems: NavItem[];
+    entries: NavEntry[];
-    workingDocumentItems: NavItem[];
     footerItems: FooterLink[];
     appVersion: string;
     currentYear: number;
@@ -27,76 +31,156 @@
     onOpenSettings: () => void;
     onSignOut: () => void;
   } = $props();
+
+  // ── Collapse state ──────────────────────────────────────────────
+  // Smart auto-expand: the group holding the current page opens itself, other
+  // groups stay exactly as the user left them, and the whole map survives a
+  // reload through sessionStorage. Multiple groups may be open at once.
+  const STORAGE_KEY = 'hsf:nav:open-groups';
+
+  function restoreOpenState(): Record<string, boolean> {
+    if (typeof window === 'undefined') return {};
+    try {
+      return JSON.parse(window.sessionStorage.getItem(STORAGE_KEY) ?? '{}');
+    } catch {
+      return {};
+    }
+  }
+
+  let openGroups = $state<Record<string, boolean>>(restoreOpenState());
+  let lastAutoExpanded = $state<string | null>(null);
+
+  function persistOpenState() {
+    if (typeof window === 'undefined') return;
+    try {
+      window.sessionStorage.setItem(STORAGE_KEY, JSON.stringify(openGroups));
+    } catch {
+      // Private-mode storage failures shouldn't break navigation.
+    }
+  }
+
+  const activeGroupId = $derived.by(() => {
+    for (const entry of entries) {
+      if (entry.kind === 'group' && groupHasActiveChild(entry.group, currentPath)) {
+        return entry.group.id;
+      }
+    }
+    return null;
+  });
+
+  // Open the active group once each time it changes. Because this only fires on
+  // a *change* of activeGroupId, a user who manually closes the group they're
+  // standing in won't have it reopened under them.
+  $effect(() => {
+    const id = activeGroupId;
+    if (id && lastAutoExpanded !== id) {
+      if (!openGroups[id]) {
+        openGroups[id] = true;
+        persistOpenState();
+      }
+      lastAutoExpanded = id;
+    }
+  });
+
+  const isOpen = (id: string) => openGroups[id] ?? false;
+
+  function toggleGroup(id: string) {
+    openGroups[id] = !isOpen(id);
+    persistOpenState();
+  }
+
+  const moduleCount = $derived.by(() =>
+    entries.reduce((count, entry) => count + (entry.kind === 'item' ? 1 : entry.group.children.length), 0)
+  );
 </script>
 
+{#snippet leafLink(item: NavItem, showIcon: boolean)}
+  {@const Icon = item.icon}
+  <a class="rail-row" class:active={matchesRoute(item.href, currentPath)} href={item.href}>
+    {#if showIcon && Icon}
+      <span class="rail-icon"><Icon size={18} strokeWidth={1.75} /></span>
+    {/if}
+    <span class="rail-text">{item.label}</span>
+    {#if item.badge}<span class="rail-badge">{item.badge}</span>{/if}
+  </a>
+{/snippet}
+
+{#snippet actionRow(label: string, Icon: ComponentType, active: boolean, onSelect: () => void)}
+  {@const RowIcon = Icon}
+  <button type="button" class="rail-row" class:active onclick={onSelect}>
+    <span class="rail-icon"><RowIcon size={18} strokeWidth={1.75} /></span>
+    <span class="rail-text">{label}</span>
+  </button>
+{/snippet}
+
 <aside class="sidebar">
   <div class="brand-row">
     <a class="brand" href={brandHref}>
-      <img class="sidebar-logo" src="/logo-hsf.png" alt="Hunter Premium Produce" />
+      <span class="brand-kicker">Hunter App</span>
+      <span class="brand-wordmark">Hunter Premium Produce</span>
+      <span class="brand-subtitle">Operations workspace</span>
     </a>
+    <span class="module-pill">{moduleCount} modules</span>
   </div>
 
   <div class="sidebar-body">
-    <AppNavSection
+    <div class="rail-scroll">
-      label="Modules"
+      <div class="rail-section-head">
-      ariaLabel="Client navigation"
+        <p class="rail-section-label">Modules</p>
-      items={primaryItems.map((item) => ({
+        <span class="rail-section-count">{moduleCount}</span>
-        label: item.label,
+      </div>
-        href: item.href,
-        icon: item.icon,
-        badge: item.badge,
-        active: matchesRoute(item.href, currentPath)
-      }))}
-    />
 
-    {#if workingDocumentItems.length}
+      <nav class="rail-nav" aria-label="Workspace navigation">
-      <AppNavSection
+        {#each entries as entry}
-        label="Working Docs"
+          {#if entry.kind === 'item'}
-        ariaLabel="Working document pages"
+            {@render leafLink(entry.item, true)}
-        items={workingDocumentItems.map((item) => ({
+          {:else}
-          label: item.label,
+            {@const group = entry.group}
-          href: item.href,
+            {@const GroupIcon = group.icon}
-          icon: item.icon,
+            {@const groupActive = groupHasActiveChild(group, currentPath)}
-          active: matchesRoute(item.href, currentPath)
+            {@const open = isOpen(group.id)}
-        }))}
+            <div class="rail-group">
-      />
+              <button
-    {/if}
+                type="button"
+                class="rail-row rail-group-toggle"
+                class:within-active={groupActive && !open}
+                aria-expanded={open}
+                onclick={() => toggleGroup(group.id)}
+              >
+                <span class="rail-icon"><GroupIcon size={18} strokeWidth={1.75} /></span>
+                <span class="rail-text">{group.label}</span>
+                <span class="rail-group-meta">
+                  <span class="rail-group-count">{group.children.length}</span>
+                  <span class="rail-chevron" class:open aria-hidden="true">
+                    <ChevronDown size={15} strokeWidth={2} />
+                  </span>
+                </span>
+              </button>
 
-    {#if footerItems.length}
+              {#if open}
-      <AppNavSection
+                <div class="rail-children">
-        label="More"
+                  {#each group.children as child}
-        ariaLabel="Workspace shortcuts"
+                    {@render leafLink(child, false)}
-        items={footerItems.map((item) => ({
+                  {/each}
-          label: item.label,
+                </div>
-          href: item.href,
-          icon: item.icon
-        }))}
-      />
               {/if}
+            </div>
+          {/if}
+        {/each}
+      </nav>
+    </div>
 
     <div class="sidebar-meta">
-      <AppNavSection
+      <div class="rail-nav">
-        ariaLabel="Account actions"
+        {#each footerItems as item}
-        items={[
+          {@render leafLink(item as NavItem, true)}
-          ...(canOpenSettings
+        {/each}
-            ? [
+
-                {
+        {#if canOpenSettings}
-                  label: 'Settings',
+          {@render actionRow('Settings', Settings, currentPath.startsWith('/settings'), onOpenSettings)}
-                  icon: Settings,
+        {/if}
-                  active: currentPath.startsWith('/settings'),
+        {@render actionRow('Logout', LogOut, false, onSignOut)}
-                  onSelect: onOpenSettings,
+      </div>
-                  type: 'button' as const
-                }
-              ]
-            : []),
-          {
-            label: 'Logout',
-            icon: LogOut,
-            onSelect: onSignOut,
-            type: 'button' as const
-          }
-        ]}
-      />
 
       <div class="sidebar-meta-foot">
         <div class="sidebar-meta-top">
@@ -119,18 +203,28 @@
 </aside>
 
 <style>
+  /* Light monochrome rail with a dark selected pill. The rail keeps its own palette
+     via the --sidebar-* tokens, independent of the content theme. */
   .sidebar {
     display: flex;
     flex-direction: column;
-    gap: 0.55rem;
+    gap: 0.75rem;
-    padding: 1.1rem 0.85rem 0.85rem;
+    padding: 1rem 0.8rem 0.85rem;
-    background: var(--panel);
+    background: var(--sidebar-bg);
-    border-right: 1px solid var(--line);
+    border-right: 1px solid var(--sidebar-border);
     position: sticky;
     top: 0;
     height: 100vh;
-    overflow-y: auto;
+    overflow: hidden;
-    scrollbar-width: thin;
+  }
+
+  .rail-section-label {
+    margin: 0;
+    color: var(--sidebar-text-muted);
+    font-size: 0.65rem;
+    font-weight: 700;
+    letter-spacing: 0.12em;
+    text-transform: uppercase;
   }
 
   .sidebar-body {
@@ -138,45 +232,301 @@
     display: flex;
     flex: 1;
     flex-direction: column;
-    gap: 0.7rem;
+    gap: 0.75rem;
+  }
+
+  .rail-scroll {
+    min-height: 0;
+    display: flex;
+    flex: 1;
+    flex-direction: column;
+    gap: 0.55rem;
+    overflow-y: auto;
+    scrollbar-width: thin;
+    padding-right: 0.15rem;
+  }
+
+  .rail-section-head {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 0.75rem;
+    padding: 0 0.5rem;
+  }
+
+  .rail-section-count {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    min-width: 1.6rem;
+    height: 1.35rem;
+    padding: 0 0.42rem;
+    border-radius: 999px;
+    background: color-mix(in srgb, var(--sidebar-text-strong) 6%, transparent);
+    color: var(--sidebar-text-muted);
+    font-size: 0.7rem;
+    font-weight: 700;
   }
 
   .brand-row {
     display: flex;
-    align-items: center;
+    align-items: flex-start;
     justify-content: space-between;
-    gap: 0.68rem;
+    gap: 0.9rem;
-    padding: 0.2rem 0.35rem 0.95rem;
+    padding: 0.15rem 0.35rem 0.95rem;
-    border-bottom: 1px solid var(--line);
+    border-bottom: 1px solid var(--sidebar-border);
   }
 
   .brand {
-    display: block;
+    display: flex;
+    flex-direction: column;
+    align-items: flex-start;
+    gap: 0.16rem;
+    min-width: 0;
+    padding: 0.08rem 0 0.1rem;
+  }
+
+  .brand-kicker {
+    color: var(--sidebar-text-muted);
+    font-size: 0.66rem;
+    font-weight: 700;
+    letter-spacing: 0.12em;
+    text-transform: uppercase;
+  }
+
+  .brand-wordmark {
+    font-size: 1rem;
+    font-weight: 700;
+    line-height: 1.2;
+    letter-spacing: -0.01em;
+    color: var(--sidebar-text-strong);
+  }
+
+  .brand-subtitle {
+    color: var(--sidebar-text-muted);
+    font-size: 0.8rem;
+    line-height: 1.3;
+  }
+
+  .module-pill {
+    flex-shrink: 0;
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    padding: 0.34rem 0.58rem;
+    border-radius: 999px;
+    background: color-mix(in srgb, var(--sidebar-active-bg) 10%, transparent);
+    color: var(--sidebar-active-bg);
+    font-size: 0.7rem;
+    font-weight: 700;
+    white-space: nowrap;
+  }
+
+  /* ── Navigation rows ─────────────────────────────────────────── */
+  .rail-nav {
+    display: grid;
+    gap: 0.18rem;
+  }
+
+  .rail-row {
+    position: relative;
+    display: flex;
+    align-items: center;
+    gap: 0.72rem;
     width: 100%;
+    min-height: 2.8rem;
+    padding: 0.62rem 0.72rem;
+    border: none;
+    border-radius: 0.9rem;
+    background: transparent;
+    color: var(--sidebar-text);
+    font-size: 0.92rem;
+    font-weight: 500;
+    letter-spacing: -0.01em;
+    text-align: left;
+    cursor: pointer;
+    transition: background-color 160ms ease, color 160ms ease;
   }
 
-  .sidebar-logo {
+  .rail-row:hover {
-    width: min(100%, 15.5rem);
+    background: var(--sidebar-hover);
-    max-width: none;
+    color: var(--sidebar-text-strong);
-    height: auto;
-    display: block;
-    object-fit: contain;
   }
 
+  .rail-row:hover .rail-icon {
+    color: var(--sidebar-text-strong);
+  }
+
+  .rail-row.active,
+  .rail-row.active:hover {
+    background: var(--sidebar-active-bg);
+    color: var(--sidebar-active-text);
+    font-weight: 600;
+  }
+
+  .rail-row.active .rail-text,
+  .rail-row.active:hover .rail-text {
+    color: var(--sidebar-active-text);
+  }
+
+  .rail-row.active .rail-icon {
+    color: var(--sidebar-active-text);
+  }
+
+  .rail-icon {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+    width: 1.5rem;
+    height: 1.5rem;
+    color: var(--sidebar-icon);
+    transition: color 140ms ease;
+  }
+
+  .rail-text {
+    min-width: 0;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+
+  .rail-badge {
+    margin-left: auto;
+    flex-shrink: 0;
+    padding: 0.12rem 0.42rem;
+    border-radius: 999px;
+    border: 1px solid var(--sidebar-border);
+    background: transparent;
+    color: var(--sidebar-text-muted);
+    font-size: 0.58rem;
+    font-weight: 700;
+    letter-spacing: 0.06em;
+    text-transform: uppercase;
+    line-height: 1.5;
+  }
+
+  .rail-row.active .rail-badge {
+    border-color: color-mix(in srgb, var(--sidebar-active-text) 26%, transparent);
+    color: var(--sidebar-active-text);
+    background: color-mix(in srgb, var(--sidebar-active-text) 12%, transparent);
+  }
+
+  .rail-group {
+    display: grid;
+    gap: 0.2rem;
+  }
+
+  .rail-group-meta {
+    margin-left: auto;
+    display: inline-flex;
+    align-items: center;
+    gap: 0.42rem;
+  }
+
+  .rail-group-count {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    min-width: 1.35rem;
+    height: 1.2rem;
+    padding: 0 0.32rem;
+    border-radius: 999px;
+    background: color-mix(in srgb, var(--sidebar-text-strong) 6%, transparent);
+    color: var(--sidebar-text-muted);
+    font-size: 0.66rem;
+    font-weight: 700;
+    line-height: 1;
+  }
+
+  .rail-group-toggle.within-active {
+    color: var(--sidebar-text-strong);
+    font-weight: 600;
+  }
+
+  .rail-group-toggle.within-active .rail-group-count {
+    color: var(--sidebar-text-strong);
+  }
+
+  .rail-group-toggle.within-active .rail-icon,
+  .rail-group-toggle.within-active .rail-chevron {
+    color: var(--sidebar-text-strong);
+  }
+
+  .rail-chevron {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+    color: var(--sidebar-icon);
+    transition: transform 200ms cubic-bezier(0.22, 1, 0.36, 1);
+  }
+
+  .rail-chevron.open {
+    transform: rotate(180deg);
+  }
+
+  .rail-children {
+    position: relative;
+    display: grid;
+    gap: 0.18rem;
+    margin: 0 0 0.15rem;
+    padding-left: 1.2rem;
+    animation: rail-reveal 170ms cubic-bezier(0.22, 1, 0.36, 1);
+  }
+
+  .rail-children::before {
+    content: '';
+    position: absolute;
+    top: 0.34rem;
+    bottom: 0.34rem;
+    left: 0.58rem;
+    width: 1px;
+    background: var(--sidebar-border);
+  }
+
+  .rail-children .rail-row {
+    min-height: 2.45rem;
+    padding: 0.48rem 0.62rem 0.48rem 0.82rem;
+    font-size: 0.88rem;
+    border-radius: 0.8rem;
+  }
+
+  @keyframes rail-reveal {
+    from {
+      opacity: 0;
+      transform: translateY(-4px);
+    }
+    to {
+      opacity: 1;
+      transform: none;
+    }
+  }
+
+  @media (prefers-reduced-motion: reduce) {
+    .rail-chevron,
+    .rail-children {
+      transition: none;
+      animation: none;
+    }
+  }
+
+  /* ── Footer / meta ───────────────────────────────────────────── */
   .sidebar-meta {
     margin-top: auto;
     display: grid;
-    gap: 0.7rem;
+    gap: 0.75rem;
-    padding-top: 1rem;
+    padding-top: 0.75rem;
+    border-top: 1px solid var(--sidebar-border);
     flex-shrink: 0;
   }
 
   .sidebar-meta-foot {
     display: grid;
     gap: 0.55rem;
-    padding: 0.8rem 0.55rem 0;
+    padding: 0.7rem 0.5rem 0;
-    border-top: 1px solid var(--line);
+    border-top: 1px solid var(--sidebar-border);
-    color: var(--muted);
+    color: var(--sidebar-text-muted);
     font-size: 0.76rem;
   }
 
@@ -197,7 +547,7 @@
     display: flex;
     align-items: center;
     gap: 0.35rem;
-    color: var(--muted);
+    color: var(--sidebar-text-muted);
     white-space: nowrap;
   }
 
@@ -209,7 +559,7 @@
   .powered-by strong {
     font-size: 0.76rem;
     font-weight: 600;
-    color: #5e6c64;
+    color: var(--sidebar-text);
   }
 
   .lean101-logo {
@@ -225,19 +575,18 @@
     align-items: center;
     gap: 0.45rem;
     padding: 0.24rem 0.56rem;
-    border: 1px solid var(--line);
+    border: 1px solid var(--sidebar-border);
     border-radius: 999px;
-    background: var(--panel-soft);
+    background: color-mix(in srgb, var(--sidebar-text-strong) 4%, transparent);
-    color: #5e6c64;
+    color: var(--sidebar-text);
     font-size: 0.72rem;
     font-weight: 600;
   }
 
   .meta-label {
-    color: var(--muted);
+    color: var(--sidebar-text-muted);
     font-weight: 700;
     letter-spacing: 0.06em;
     text-transform: uppercase;
   }
-
 </style>

frontend/src/lib/components/navigation/ClientTopbar.svelte

@@ -1,6 +1,7 @@
 <script lang="ts">
   import { Settings } from 'lucide-svelte';
 
+  import ThemeToggle from '$lib/components/ThemeToggle.svelte';
   import WorkspaceSearchTrigger from '$lib/components/navigation/WorkspaceSearchTrigger.svelte';
   import type { AppSession } from '$lib/session';
   import type { Crumb } from '$lib/navigation/client-navigation';
@@ -36,6 +37,9 @@
 
 <header class="topbar">
   <div class="topbar-start">
+    <a class="topbar-brand" href="/" aria-label="Hunter Premium Produce home">
+      <img src="/logo-hsf.png" alt="Hunter Premium Produce" />
+    </a>
     <div class="topbar-copy">
       <nav class="breadcrumbs" aria-label="Breadcrumb">
         {#each breadcrumbs as crumb, index}
@@ -60,6 +64,8 @@
   {/if}
 
   <div class="topbar-actions">
+    <ThemeToggle />
+
     <div class="menu-wrap user-menu-wrap">
       <button aria-expanded={userMenuOpen} class="user-trigger" type="button" onclick={onToggleUserMenu}>
         <span class="user-avatar-wrap">
@@ -127,8 +133,22 @@
   .topbar-start {
     min-width: 0;
     display: flex;
-    align-items: flex-start;
+    align-items: center;
-    gap: 0.82rem;
+    gap: 0.9rem;
+  }
+
+  .topbar-brand {
+    display: inline-flex;
+    align-items: center;
+    flex-shrink: 0;
+    padding-right: 0.9rem;
+    border-right: 1px solid var(--color-border);
+  }
+
+  .topbar-brand img {
+    height: 2rem;
+    width: auto;
+    display: block;
   }
 
   .topbar-copy h1 {
@@ -163,7 +183,7 @@
   }
 
   .breadcrumb-sep {
-    color: #b9c5be;
+    color: var(--color-text-muted);
     font-size: 0.78rem;
   }
 
@@ -176,7 +196,7 @@
   :global(.topbar-search) {
     width: 100%;
     min-height: 2.75rem;
-    background: color-mix(in srgb, var(--panel-soft) 68%, white);
+    background: color-mix(in srgb, var(--panel-soft) 60%, var(--color-bg-surface));
   }
 
   .topbar-actions {
@@ -205,10 +225,10 @@
     align-items: center;
     gap: 0.72rem;
     padding: 0.56rem 0.76rem;
-    border: 1px solid var(--line);
+    border: 1px solid var(--color-border);
     border-radius: 0.96rem;
     background: var(--panel-soft);
-    color: #304038;
+    color: var(--color-text-primary);
     text-align: left;
     cursor: pointer;
   }
@@ -225,8 +245,8 @@
     width: 2rem;
     height: 2rem;
     border-radius: 50%;
-    background: var(--green-deep);
+    background: var(--color-brand);
-    color: #fff;
+    color: var(--color-on-brand);
     font-size: 0.72rem;
     font-weight: 700;
     letter-spacing: 0.02em;
@@ -240,16 +260,16 @@
     width: 0.55rem;
     height: 0.55rem;
     border-radius: 999px;
-    border: 1.5px solid var(--panel-soft);
+    border: 1.5px solid var(--color-bg-surface);
-    background: #b4c0ba;
+    background: var(--color-text-muted);
   }
 
   .user-status-dot.live {
-    background: #4ade80;
+    background: var(--color-success);
   }
 
   .user-status-dot.idle {
-    background: #c08b3d;
+    background: var(--color-warning);
   }
 
   .user-menu-avatar {
@@ -260,8 +280,8 @@
     width: 2.5rem;
     height: 2.5rem;
     border-radius: 50%;
-    background: var(--green-deep);
+    background: var(--color-brand);
-    color: #fff;
+    color: var(--color-on-brand);
     font-size: 0.9rem;
     font-weight: 700;
     letter-spacing: 0.02em;
@@ -329,8 +349,8 @@
   .chevron {
     width: 0.54rem;
     height: 0.54rem;
-    border-right: 2px solid #7a8c82;
+    border-right: 2px solid var(--color-text-muted);
-    border-bottom: 2px solid #7a8c82;
+    border-bottom: 2px solid var(--color-text-muted);
     transform: rotate(45deg);
     transition: transform 140ms ease;
   }
@@ -350,16 +370,15 @@
     padding: 0.4rem;
     border: 1px solid var(--color-border);
     border-radius: 0.96rem;
-    background: rgba(255, 255, 255, 0.98);
+    background: var(--color-bg-elevated);
     box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
-    backdrop-filter: blur(10px);
   }
 
   .menu-panel a,
   .menu-panel button {
     padding: 0.72rem 0.78rem;
     border-radius: 0.78rem;
-    color: #304038;
+    color: var(--color-text-primary);
     text-align: left;
     background: transparent;
     border: none;
@@ -397,6 +416,14 @@
       padding: 0.72rem 1rem;
     }
 
+    .topbar-brand {
+      padding-right: 0.6rem;
+    }
+
+    .topbar-brand img {
+      height: 1.6rem;
+    }
+
     .user-trigger {
       min-width: auto;
       width: 100%;

frontend/src/lib/components/navigation/WorkspaceSearchTrigger.svelte

@@ -35,18 +35,18 @@
   }
 
   .search-box:hover {
-    border-color: color-mix(in srgb, var(--color-brand) 22%, var(--line));
+    border-color: color-mix(in srgb, var(--color-brand) 24%, var(--line));
-    background: #fff;
+    background: var(--color-bg-surface);
   }
 
   .search-box:focus-visible {
     outline: none;
     border-color: var(--color-brand);
-    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-brand) 16%, transparent);
+    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-brand) 18%, transparent);
   }
 
   .search-placeholder {
-    color: #93a098;
+    color: var(--color-text-muted);
     min-width: 0;
     overflow: hidden;
     text-overflow: ellipsis;
@@ -58,7 +58,7 @@
     display: inline-block;
     width: 0.82rem;
     height: 0.82rem;
-    border: 2px solid #98a59d;
+    border: 2px solid var(--color-text-muted);
     border-radius: 999px;
   }
 
@@ -70,7 +70,7 @@
     width: 0.42rem;
     height: 2px;
     border-radius: 999px;
-    background: #98a59d;
+    background: var(--color-text-muted);
     transform: rotate(45deg);
   }
 
@@ -79,7 +79,7 @@
     border: 1px solid var(--line-strong);
     border-radius: 0.42rem;
     color: var(--muted);
-    background: #fff;
+    background: var(--color-bg-surface);
     font-size: 0.76rem;
   }
 </style>

frontend/src/lib/format.test.ts

@@ -0,0 +1,25 @@
+import { describe, expect, it } from 'vitest';
+import { formatDate, formatLocaleNumber, formatNumber, toNum } from './format';
+
+describe('format utilities', () => {
+  it('coerces numeric input safely', () => {
+    expect(toNum(' 12.5 ')).toBe(12.5);
+    expect(toNum(3)).toBe(3);
+    expect(toNum('')).toBeNull();
+    expect(toNum(Number.NaN)).toBeNull();
+    expect(toNum('not a number')).toBeNull();
+  });
+
+  it('formats fixed and locale numbers', () => {
+    expect(formatNumber(12.345, 2)).toBe('12.35');
+    expect(formatNumber(null, 2)).toBe('N/A');
+    expect(formatLocaleNumber(1234.56, 1, 'en-AU')).toBe('1,234.6');
+    expect(formatLocaleNumber(undefined, 1)).toBe('-');
+  });
+
+  it('formats dates with a fallback for empty values', () => {
+    expect(formatDate(null)).toBe('-');
+    expect(formatDate('not-a-date')).toBe('not-a-date');
+    expect(formatDate('2026-06-04', { day: '2-digit', month: 'short', year: 'numeric' }, 'en-AU')).toContain('2026');
+  });
+});

frontend/src/lib/format.ts

@@ -0,0 +1,39 @@
+export function toNum(value: unknown): number | null {
+  if (value === null || value === undefined) return null;
+  if (typeof value === 'number') return Number.isFinite(value) ? value : null;
+
+  const trimmed = String(value).trim();
+  if (!trimmed) return null;
+
+  const parsed = Number(trimmed);
+  return Number.isFinite(parsed) ? parsed : null;
+}
+
+export function formatNumber(value: number | null | undefined, digits = 2, fallback = 'N/A') {
+  if (value === null || value === undefined) return fallback;
+  return value.toFixed(digits);
+}
+
+export function formatLocaleNumber(
+  value: number | null | undefined,
+  digits = 0,
+  locale = 'en-AU',
+  fallback = '-'
+) {
+  if (value === null || value === undefined) return fallback;
+  return value.toLocaleString(locale, { maximumFractionDigits: digits });
+}
+
+export function formatDate(
+  value: string | null | undefined,
+  options: Intl.DateTimeFormatOptions = { dateStyle: 'medium' },
+  locale = 'en-NZ',
+  fallback = '-'
+) {
+  if (!value) return fallback;
+
+  const date = new Date(value);
+  if (Number.isNaN(date.getTime())) return value;
+
+  return new Intl.DateTimeFormat(locale, options).format(date);
+}

frontend/src/lib/navigation/client-navigation.ts

@@ -1,7 +1,9 @@
 import {
+  BadgeDollarSign,
   Calculator,
   ClipboardPenLine,
   Gauge,
+  Layers,
   LayoutDashboard,
   ShieldCheck,
   TrendingUp
@@ -37,6 +39,23 @@ export type FooterLink = {
   icon: ComponentType;
 };
 
+/**
+ * A collapsible family of related modules in the primary rail. Groups keep the
+ * top level short as more modules ship: a new costing tool becomes another child
+ * here rather than another peer in a flat stack.
+ */
+export type NavGroup = {
+  id: string;
+  label: string;
+  icon: ComponentType;
+  children: NavItem[];
+};
+
+/** The rail is a sequence of standalone items and collapsible groups. */
+export type NavEntry =
+  | { kind: 'item'; item: NavItem }
+  | { kind: 'group'; group: NavGroup };
+
 export type Crumb = {
   label: string;
   href?: string;
@@ -58,9 +77,18 @@ export const mixCalculatorItem: NavItem = {
   moduleKey: 'mix_calculator'
 };
 
+export const productCostingItem: NavItem = {
+  href: '/product-costing',
+  label: 'Product Costing',
+  shortLabel: 'PC',
+  icon: BadgeDollarSign,
+  moduleKey: 'products',
+  badge: 'Alpha'
+};
+
 export const editorItem: NavItem = {
   href: '/editor',
-  label: 'Editor',
+  label: 'Mix Editor',
   shortLabel: 'ED',
   icon: ClipboardPenLine,
   moduleKey: 'products',
@@ -100,6 +128,7 @@ export const accessControlItem: NavItem = {
 export const clientNavigationItems: NavItem[] = [
   dashboardItem,
   mixCalculatorItem,
+  productCostingItem,
   throughputItem,
   editorItem,
   accessControlItem
@@ -108,9 +137,15 @@ export const clientNavigationItems: NavItem[] = [
 export const footerLinks: FooterLink[] = [];
 
 export const baseSearchItems: SearchItem[] = [
+  {
+    href: '/product-costing',
+    label: 'Open Product Costing',
+    description: 'Maintain product costing records, assumptions, and calculated pricing.',
+    keywords: 'alpha product costing pricing finished delivered distributor wholesale margin spreadsheet'
+  },
   {
     href: '/editor',
-    label: 'Open Editor',
+    label: 'Open Mix Editor',
     description: 'Edit client, product, and mix naming from one table.',
     keywords: 'editor products mixes clients names bulk table phf horse manning'
   },
@@ -162,6 +197,50 @@ export const baseSearchItems: SearchItem[] = [
   },
 ];
 
+/**
+ * Assemble the grouped primary rail from already access-filtered items.
+ * Callers pass only the modules the current session may see; empty families
+ * collapse away so a role with one costing tool never gets an empty group.
+ *
+ * Workflow-family layout: Dashboard, then a "Costing" group (the calculator,
+ * costing, editor, and master tools), then Operations and Insights modules at
+ * the top level until each grows into a family of its own.
+ */
+export function buildClientNavEntries(visible: {
+  dashboard?: NavItem | null;
+  costing: NavItem[];
+  throughput?: NavItem | null;
+  reporting?: NavItem | null;
+}): NavEntry[] {
+  const entries: NavEntry[] = [];
+
+  if (visible.dashboard) {
+    entries.push({ kind: 'item', item: visible.dashboard });
+  }
+
+  if (visible.costing.length) {
+    entries.push({
+      kind: 'group',
+      group: { id: 'costing', label: 'Costing', icon: Layers, children: visible.costing }
+    });
+  }
+
+  if (visible.throughput) {
+    entries.push({ kind: 'item', item: visible.throughput });
+  }
+
+  if (visible.reporting) {
+    entries.push({ kind: 'item', item: visible.reporting });
+  }
+
+  return entries;
+}
+
+/** True when any of a group's children matches the current route. */
+export function groupHasActiveChild(group: NavGroup, pathname: string) {
+  return group.children.some((child) => matchesRoute(child.href, pathname));
+}
+
 export function matchesRoute(href: string, pathname: string) {
   return href === '/' ? pathname === '/' : pathname.startsWith(href);
 }
@@ -185,8 +264,12 @@ export function clientBreadcrumbs(pathname: string, session?: AppSession | null)
     return [...crumbs, { label: 'Mix Calculator' }];
   }
 
+  if (pathname.startsWith('/product-costing')) {
+    return [...crumbs, { label: 'Product Costing' }];
+  }
+
   if (pathname.startsWith('/editor')) {
-    return [...crumbs, { label: 'Editor' }];
+    return [...crumbs, { label: 'Mix Editor' }];
   }
 
   if (pathname.startsWith('/mixes')) {
@@ -202,6 +285,7 @@ export function clientBreadcrumbs(pathname: string, session?: AppSession | null)
 
   const sectionMap: Record<string, string> = {
     '/raw-materials': 'Raw Materials',
+    '/product-costing': 'Product Costing',
     '/products': 'Products',
     '/scenarios': 'Scenarios',
     '/client-access': 'Client Access',

frontend/src/lib/styles/theme.css

@@ -0,0 +1,541 @@
+/* ============================================================================
+   Theme + design tokens (single source of truth)
+   ----------------------------------------------------------------------------
+   Light is the default. Dark is opted into via <html data-theme="dark">, set
+   before first paint by the inline script in app.html and kept in sync by
+   $lib/theme.ts. Every colour the app uses resolves from a token here, so a
+   surface that reads from tokens themes automatically in both modes.
+
+   Scene that forced the dark palette: an operations lead reconciling pasta
+   production costs late in a dim back-office, wanting the glare off a white
+   screen without losing the soft-green brand identity.
+   ============================================================================ */
+
+:root {
+  color-scheme: light;
+
+  /* ── Brand: green-forward (Weavy). Emerald carries primary actions,
+        active content states, charts, and positive deltas. ──────── */
+  --color-brand:        oklch(0.56 0.125 162);  /* primary green button   */
+  --color-brand-hover:  oklch(0.49 0.115 162);
+  --color-brand-tint:   oklch(0.95 0.04 162);
+  --color-on-brand:     oklch(0.99 0.012 162);
+  --color-secondary:    oklch(0.45 0.01 240);   /* neutral secondary      */
+
+  /* ── Accent (brighter emerald for data / positive emphasis) ── */
+  --color-accent:       oklch(0.65 0.15 162);
+  --color-accent-hover: oklch(0.56 0.13 162);
+  --color-accent-tint:  oklch(0.95 0.05 162);
+
+  /* ── Content surfaces: neutral light-gray canvas, white cards ── */
+  --color-bg-app:       oklch(0.966 0.002 240);
+  --color-bg-surface:   oklch(0.998 0.001 240);
+  --color-bg-elevated:  oklch(0.99 0.0015 240);
+  --color-surface-hover:    oklch(0.955 0.004 240);
+  --color-surface-selected: color-mix(in srgb, var(--color-brand) 10%, var(--color-bg-surface));
+
+  /* ── Borders ────────────────────────────────────────────── */
+  --color-border:       oklch(0.92 0.005 240);
+  --color-divider:      oklch(0.94 0.004 240);
+
+  /* ── Text (neutral) ─────────────────────────────────────── */
+  --color-text-primary:   oklch(0.25 0.006 240);
+  --color-text-secondary: oklch(0.45 0.008 240);
+  --color-text-muted:     oklch(0.6 0.01 240);
+
+  /* ── Sidebar: light monochrome rail with the current item shown as the
+        selected pill. Shared across themes so navigation stays consistent. ── */
+  --sidebar-bg:          oklch(0.985 0.001 240);
+  --sidebar-hover:       oklch(0.952 0.003 240);
+  --sidebar-active-bg:   #3290d9;
+  --sidebar-active-text: var(--color-on-brand);
+  --sidebar-border:      oklch(0.9 0.004 240);
+  --sidebar-text:        oklch(0.34 0.006 240);
+  --sidebar-text-strong: oklch(0.16 0.004 240);
+  --sidebar-text-muted:  oklch(0.56 0.008 240);
+  --sidebar-icon:        oklch(0.42 0.006 240);
+  --sidebar-logo-bg:     oklch(0.98 0.003 240);
+
+  /* ── Semantic ───────────────────────────────────────────── */
+  --color-success:      oklch(0.66 0.16 162);  /* emerald, cohesive with accent */
+  --color-warning:      oklch(0.66 0.12 78);
+  --color-error:        oklch(0.58 0.2 25);
+  --color-info:         oklch(0.55 0.13 245);
+
+  --color-success-text: oklch(0.52 0.14 162);
+  --color-success-tint: oklch(0.95 0.05 164);
+  --color-warning-text: oklch(0.45 0.11 69);
+  --color-warning-tint: oklch(0.96 0.045 78);
+  --color-info-tint:    oklch(0.965 0.025 245);
+
+  /* ── Brand-literal deep green: kept for legacy success / positive
+        text and tints. Solid brand chips point at --color-brand. ── */
+  --green-deep:  oklch(0.42 0.13 150);
+
+  /* ── Radii / spacing (theme-independent) ────────────────── */
+  --radius-panel:   0.9rem;
+  --radius-control: 0.68rem;
+  --radius-row:     0.78rem;
+  --space-page:     1.25rem;
+  --space-card:     1.15rem;
+  --shadow:         none; /* flat by design: separate with borders, not shadows */
+
+  /* ── Legacy aliases (resolve through the tokens above, so they
+        re-theme automatically when the tokens are overridden).
+        --green maps to the accent so existing green usages stay green. ── */
+  --bg:          var(--color-bg-app);
+  --panel:       var(--color-bg-surface);
+  --panel-soft:  var(--color-bg-app);
+  --line:        var(--color-border);
+  --line-strong: var(--color-border);
+  --text:        var(--color-text-primary);
+  --muted:       var(--color-text-muted);
+  --green:       var(--color-accent);
+  --green-soft:  var(--color-success-tint);
+  --blue-soft:   var(--color-info-tint);
+}
+
+:root[data-theme='dark'] {
+  color-scheme: dark;
+
+  /* ── Brand: green-forward, brightened for dark ─────────────── */
+  --color-brand:        oklch(0.62 0.13 162);
+  --color-brand-hover:  oklch(0.7 0.13 162);
+  --color-brand-tint:   oklch(0.32 0.06 162);
+  --color-on-brand:     oklch(0.99 0.012 162);
+  --color-secondary:    oklch(0.72 0.01 240);
+
+  /* ── Accent (emerald) ───────────────────────────────────── */
+  --color-accent:       oklch(0.72 0.15 162);
+  --color-accent-hover: oklch(0.8 0.14 162);
+  --color-accent-tint:  oklch(0.33 0.06 162);
+
+  /* ── Surfaces (neutral dark) ────────────────────────────── */
+  --color-bg-app:       oklch(0.17 0.004 240);
+  --color-bg-surface:   oklch(0.215 0.005 240);
+  --color-bg-elevated:  oklch(0.26 0.006 240);
+  --color-surface-hover:    oklch(0.27 0.006 240);
+  --color-surface-selected: color-mix(in srgb, var(--color-brand) 14%, var(--color-bg-surface));
+
+  /* ── Borders ────────────────────────────────────────────── */
+  --color-border:       oklch(0.32 0.006 240);
+  --color-divider:      oklch(0.28 0.005 240);
+
+  /* ── Text (neutral) ─────────────────────────────────────── */
+  --color-text-primary:   oklch(0.96 0.003 240);
+  --color-text-secondary: oklch(0.78 0.006 240);
+  --color-text-muted:     oklch(0.62 0.008 240);
+
+  /* ── Semantic ───────────────────────────────────────────── */
+  --color-success:      oklch(0.75 0.16 162);
+  --color-warning:      oklch(0.8 0.12 80);
+  --color-error:        oklch(0.7 0.18 25);
+  --color-info:         oklch(0.72 0.12 240);
+
+  --color-success-text: oklch(0.84 0.14 162);
+  --color-success-tint: oklch(0.32 0.06 162);
+  --color-warning-text: oklch(0.85 0.1 80);
+  --color-warning-tint: oklch(0.32 0.05 78);
+  --color-info-tint:    oklch(0.3 0.05 240);
+
+  --green-deep:  oklch(0.7 0.15 150);
+}
+
+/* ============================================================================
+   Base
+   ============================================================================ */
+
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+}
+
+html,
+body {
+  margin: 0;
+  min-height: 100%;
+  background: var(--color-bg-app);
+  color: var(--color-text-primary);
+  font-family: 'Inter', 'Segoe UI', sans-serif;
+  font-size: 14px;
+}
+
+h1,
+h2,
+h3,
+h4,
+h5,
+h6 {
+  font-family: 'Inter', 'Segoe UI', sans-serif;
+  letter-spacing: -0.03em;
+}
+
+button,
+input,
+select,
+textarea {
+  font: inherit;
+}
+
+a {
+  color: inherit;
+  text-decoration: none;
+}
+
+:focus-visible {
+  outline: 3px solid color-mix(in srgb, var(--color-brand) 42%, transparent);
+  outline-offset: 2px;
+}
+
+/* ============================================================================
+   Shared product surfaces (used across every route, so they live here rather
+   than in any one shell component)
+   ============================================================================ */
+
+.ui-stack {
+  display: grid;
+  gap: var(--space-page);
+}
+
+.ui-panel,
+.ui-metric-card {
+  background: var(--color-bg-surface);
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-panel);
+  box-shadow: var(--shadow);
+}
+
+.ui-panel {
+  padding: var(--space-card);
+}
+
+.ui-panel-soft {
+  background: var(--panel-soft);
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-row);
+}
+
+.ui-section-heading {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 0.85rem;
+  margin-bottom: 1rem;
+}
+
+.ui-section-heading h3,
+.ui-section-heading h4 {
+  margin: 0.18rem 0 0;
+  font-size: 1.06rem;
+  font-weight: 700;
+  letter-spacing: 0;
+}
+
+.ui-eyebrow {
+  margin: 0;
+  color: var(--color-text-muted);
+  font-size: 0.72rem;
+  font-weight: 700;
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+}
+
+.ui-muted {
+  color: var(--color-text-muted);
+}
+
+.ui-metric-row {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  gap: 1rem;
+}
+
+.ui-metric-card {
+  padding: 1.05rem 1.1rem;
+}
+
+.ui-metric-card span {
+  display: block;
+  color: var(--color-text-muted);
+  font-size: 0.84rem;
+}
+
+.ui-metric-card strong {
+  display: block;
+  margin: 0.5rem 0 0.28rem;
+  font-size: 1.75rem;
+  font-weight: 700;
+}
+
+.ui-metric-card p {
+  margin: 0;
+  color: var(--color-text-muted);
+}
+
+.ui-button {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  min-height: 2.6rem;
+  padding: 0.72rem 0.9rem;
+  border-radius: var(--radius-control);
+  font-weight: 600;
+  cursor: pointer;
+  transition: background-color 160ms cubic-bezier(0.22, 1, 0.36, 1),
+    border-color 160ms cubic-bezier(0.22, 1, 0.36, 1), color 160ms cubic-bezier(0.22, 1, 0.36, 1);
+}
+
+.ui-button.primary {
+  border: 1px solid var(--color-brand);
+  color: var(--color-on-brand);
+  background: var(--color-brand);
+}
+
+.ui-button.primary:hover:not(:disabled) {
+  background: var(--color-brand-hover);
+  border-color: var(--color-brand-hover);
+}
+
+.ui-button.secondary {
+  border: 1px solid var(--color-border);
+  color: var(--color-text-primary);
+  background: var(--color-bg-surface);
+}
+
+.ui-button.secondary:hover:not(:disabled) {
+  background: var(--color-surface-hover);
+}
+
+.ui-button:disabled {
+  opacity: 0.55;
+  cursor: not-allowed;
+}
+
+.ui-pill {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: fit-content;
+  border-radius: 999px;
+  padding: 0.4rem 0.74rem;
+  font-size: 0.82rem;
+  font-weight: 600;
+  text-transform: capitalize;
+  white-space: nowrap;
+}
+
+.ui-pill.positive {
+  color: var(--color-success-text);
+  background: var(--color-success-tint);
+}
+
+.ui-pill.warning {
+  color: var(--color-warning-text);
+  background: var(--color-warning-tint);
+}
+
+.ui-pill.neutral {
+  color: var(--color-text-secondary);
+  background: color-mix(in srgb, var(--panel-soft) 74%, var(--color-bg-surface));
+}
+
+.ui-table-wrap {
+  overflow-x: auto;
+}
+
+.ui-table {
+  width: 100%;
+  min-width: 48rem;
+  border-collapse: separate;
+  border-spacing: 0 0.65rem;
+}
+
+.ui-table th,
+.ui-table td {
+  padding: 0.9rem 0.95rem;
+  text-align: left;
+  white-space: nowrap;
+}
+
+.ui-table th {
+  color: var(--color-text-muted);
+  font-size: 0.74rem;
+  font-weight: 700;
+  letter-spacing: 0.06em;
+  text-transform: uppercase;
+}
+
+.ui-table tbody td {
+  background: var(--panel-soft);
+  border-top: 1px solid var(--color-border);
+  border-bottom: 1px solid var(--color-border);
+}
+
+.ui-table tbody td:first-child {
+  border-left: 1px solid var(--color-border);
+  border-radius: var(--radius-row) 0 0 var(--radius-row);
+}
+
+.ui-table tbody td:last-child {
+  border-right: 1px solid var(--color-border);
+  border-radius: 0 var(--radius-row) var(--radius-row) 0;
+}
+
+.ui-table-identity {
+  display: flex;
+  align-items: center;
+  gap: 0.74rem;
+  min-width: 0;
+}
+
+.ui-row-mark {
+  width: 2.25rem;
+  height: 2.25rem;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  flex-shrink: 0;
+  border-radius: 0.76rem;
+  color: var(--color-on-brand);
+  background: var(--color-brand);
+  font-size: 0.72rem;
+  font-weight: 700;
+  letter-spacing: 0.05em;
+}
+
+.ui-table-identity strong,
+.ui-number-block strong {
+  display: block;
+  font-size: 0.94rem;
+}
+
+.ui-table-identity span,
+.ui-number-block span {
+  display: block;
+  margin-top: 0.16rem;
+  color: var(--color-text-muted);
+  font-size: 0.8rem;
+}
+
+.ui-number-block {
+  display: grid;
+  gap: 0.08rem;
+}
+
+.ui-form-grid {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 0.85rem;
+}
+
+.ui-form-grid.compact {
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+}
+
+.ui-field {
+  display: grid;
+  gap: 0.36rem;
+  color: var(--color-text-secondary);
+  font-size: 0.88rem;
+  font-weight: 600;
+}
+
+.ui-field input,
+.ui-field textarea,
+.ui-field select {
+  width: 100%;
+  padding: 0.82rem 0.9rem;
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-control);
+  background: var(--panel-soft);
+  color: var(--color-text-primary);
+  transition: background-color 160ms cubic-bezier(0.22, 1, 0.36, 1),
+    border-color 160ms cubic-bezier(0.22, 1, 0.36, 1), box-shadow 160ms cubic-bezier(0.22, 1, 0.36, 1);
+}
+
+.ui-field input:focus,
+.ui-field textarea:focus,
+.ui-field select:focus {
+  outline: none;
+  border-color: var(--color-brand);
+  background: var(--color-bg-surface);
+  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-brand) 20%, transparent);
+}
+
+@media (max-width: 980px) {
+  .ui-metric-row {
+    grid-template-columns: 1fr;
+  }
+}
+
+@media (max-width: 760px) {
+  .ui-section-heading {
+    flex-direction: column;
+    align-items: flex-start;
+  }
+
+  .ui-table {
+    min-width: 0;
+    border-spacing: 0;
+  }
+
+  .ui-table,
+  .ui-table thead,
+  .ui-table tbody,
+  .ui-table tr,
+  .ui-table td {
+    display: block;
+    width: 100%;
+  }
+
+  .ui-table thead {
+    display: none;
+  }
+
+  .ui-table tbody {
+    display: grid;
+    gap: 0.85rem;
+  }
+
+  .ui-table tbody tr {
+    padding: 0.3rem;
+    border: 1px solid var(--color-border);
+    border-radius: var(--radius-row);
+    background: var(--panel-soft);
+  }
+
+  .ui-table tbody td {
+    padding: 0.76rem 0.8rem;
+    white-space: normal;
+    border: none;
+    border-radius: 0;
+    background: transparent;
+  }
+
+  .ui-table tbody td:first-child,
+  .ui-table tbody td:last-child {
+    border: none;
+    border-radius: 0;
+  }
+
+  .ui-table tbody td + td {
+    border-top: 1px solid var(--color-border);
+  }
+
+  .ui-table tbody td::before {
+    content: attr(data-label);
+    display: block;
+    margin-bottom: 0.35rem;
+    color: var(--color-text-muted);
+    font-size: 0.72rem;
+    font-weight: 700;
+    letter-spacing: 0.06em;
+    text-transform: uppercase;
+  }
+
+  .ui-form-grid,
+  .ui-form-grid.compact {
+    grid-template-columns: 1fr;
+  }
+}

frontend/src/lib/theme.ts

@@ -0,0 +1,56 @@
+import { writable } from 'svelte/store';
+import { browser } from '$app/environment';
+
+export type ThemePreference = 'light' | 'dark' | 'system';
+export type ResolvedTheme = 'light' | 'dark';
+
+const STORAGE_KEY = 'theme';
+
+function systemTheme(): ResolvedTheme {
+  return browser && window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light';
+}
+
+function resolve(pref: ThemePreference): ResolvedTheme {
+  return pref === 'system' ? systemTheme() : pref;
+}
+
+function readPreference(): ThemePreference {
+  if (!browser) return 'system';
+  const stored = window.localStorage.getItem(STORAGE_KEY);
+  return stored === 'light' || stored === 'dark' || stored === 'system' ? stored : 'system';
+}
+
+function applyResolved(theme: ResolvedTheme) {
+  if (browser) {
+    document.documentElement.dataset.theme = theme;
+  }
+}
+
+/** The user's stored choice (may be 'system'). */
+export const themePreference = writable<ThemePreference>(readPreference());
+
+/** The theme actually painted right now ('system' collapsed to light/dark). */
+export const resolvedTheme = writable<ResolvedTheme>(resolve(readPreference()));
+
+if (browser) {
+  themePreference.subscribe((pref) => {
+    window.localStorage.setItem(STORAGE_KEY, pref);
+    const next = resolve(pref);
+    resolvedTheme.set(next);
+    applyResolved(next);
+  });
+
+  // Follow the OS only while the user is on 'system'.
+  window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', () => {
+    if (readPreference() === 'system') {
+      const next = systemTheme();
+      resolvedTheme.set(next);
+      applyResolved(next);
+    }
+  });
+}
+
+/** Flip between light and dark, committing to an explicit preference. */
+export function toggleTheme() {
+  themePreference.update((pref) => (resolve(pref) === 'dark' ? 'light' : 'dark'));
+}

frontend/src/lib/types.ts

@@ -208,6 +208,73 @@ export type ProductCostBreakdown = {
   inputs?: Record<string, unknown>;
 };
 
+export type ProductCostingItem = {
+  id: number;
+  tenant_id: string;
+  client_category: string;
+  item_id: string | null;
+  product_name: string;
+  mix_product_name: string;
+  unit_type: string;
+  own_bag: string | null;
+  unit_kg: number | null;
+  items_per_pallet: number | null;
+  bagging_process: string | null;
+  manual_distributor_margin: number | null;
+  manual_wholesale_margin: number | null;
+  cleaned_product_cost_per_kg: number | null;
+  grading_cost_per_kg: number | null;
+  bagging_cost_per_kg: number | null;
+  cracking_cost_per_kg: number | null;
+  bag_cost_per_unit: number | null;
+  freight_cost_per_unit: number | null;
+  finished_product_delivered_cost: number | null;
+  distributor_price: number | null;
+  wholesale_price: number | null;
+  warnings: string[];
+  created_at: string;
+  updated_at: string;
+};
+
+export type ProductCostingItemUpdateInput = {
+  client_category?: string;
+  item_id?: string | null;
+  product_name?: string;
+  mix_product_name?: string;
+  unit_type?: string;
+  own_bag?: string | null;
+  unit_kg?: number | null;
+  items_per_pallet?: number | null;
+  bagging_process?: string | null;
+  manual_distributor_margin?: number | null;
+  manual_wholesale_margin?: number | null;
+};
+
+export type ProductCostingNamedInput = {
+  key: string;
+  label: string;
+  cost: number;
+};
+
+export type ProductCostingClientInput = {
+  client_category: string;
+  distributor_margin: number | null;
+  wholesale_margin: number | null;
+};
+
+export type ProductCostingInputs = {
+  base: {
+    grading_per_tonne: number;
+    grading_per_kg: number;
+    cracking_per_tonne: number;
+    cracking_per_kg: number;
+  };
+  processes: ProductCostingNamedInput[];
+  clients: ProductCostingClientInput[];
+  bags: ProductCostingNamedInput[];
+  freight: ProductCostingNamedInput[];
+};
+
 export type EditorProductRow = {
   id: number;
   tenant_id: string;
@@ -382,6 +449,39 @@ export type DashboardSummary = {
     mix_cost_per_kg: number[];
     product_finished_delivered: number[];
   };
+  operations?: {
+    period_label: string;
+    total_kg: number;
+    total_bags: number;
+    entry_count: number;
+    estimated_wholesale_value: number;
+    priced_entry_count: number;
+    top_products: Array<{
+      product_name: string;
+      client_name: string | null;
+      kg: number;
+      bags: number;
+      entries: number;
+    }>;
+    client_totals: Array<{
+      client_name: string;
+      kg: number;
+    }>;
+    pricing_issues: {
+      missing_lookup: number;
+      missing_unit_kg: number;
+      missing_pallet_qty: number;
+      missing_price: number;
+      invalid_margin: number;
+      total: number;
+    };
+    produced_not_priced: Array<{
+      product_name: string;
+      kg: number;
+      status: string;
+      warnings: string[];
+    }>;
+  } | null;
 };
 
 export type LoginResponse = {

frontend/src/lib/workspace-access.ts

@@ -89,6 +89,10 @@ export function canOpenProducts(session: AppSession | null | undefined) {
   return canAccessWorkspaceArea(session, 'products', ['view_products', 'edit_products']);
 }
 
+export function canOpenProductCosting(session: AppSession | null | undefined) {
+  return canOpenProducts(session);
+}
+
 export function canOpenEditor(session: AppSession | null | undefined) {
   if (!session) {
     return false;
@@ -140,6 +144,11 @@ export const routeAccessRules: RouteAccessRule[] = [
     matches: (pathname) => hasPathPrefix(pathname, '/raw-materials')
   },
   { path: '/mixes', roles: ['admin', 'full', 'client'], matches: (pathname) => hasPathPrefix(pathname, '/mixes') },
+  {
+    path: '/product-costing',
+    roles: ['admin', 'full', 'client'],
+    matches: (pathname) => hasPathPrefix(pathname, '/product-costing')
+  },
   { path: '/products', roles: ['admin', 'full', 'client'], matches: (pathname) => hasPathPrefix(pathname, '/products') },
   { path: '/editor', roles: ['admin'], matches: (pathname) => hasPathPrefix(pathname, '/editor') },
   { path: '/reporting', roles: ['admin', 'full', 'client'], matches: (pathname) => hasPathPrefix(pathname, '/reporting') },
@@ -196,6 +205,7 @@ export function canAccessRoute(session: AppSession | null | undefined, pathname:
   if (pathname.startsWith('/mix-calculator')) return canOpenMixCalculator(session);
   if (pathname.startsWith('/raw-materials')) return canOpenRawMaterials(session);
   if (pathname.startsWith('/mixes')) return canOpenMixMaster(session);
+  if (pathname.startsWith('/product-costing')) return canOpenProductCosting(session);
   if (pathname.startsWith('/products')) return canOpenProducts(session);
   if (pathname.startsWith('/editor')) return canOpenEditor(session);
   if (pathname.startsWith('/scenarios')) return canOpenScenarios(session);

frontend/src/routes/+layout.svelte

@@ -3,6 +3,8 @@
   import '@fontsource/inter/latin-500.css';
   import '@fontsource/inter/latin-600.css';
   import '@fontsource/inter/latin-700.css';
+  import '$lib/styles/theme.css';
+  import '$lib/theme';
   import { beforeNavigate, afterNavigate } from '$app/navigation';
   import { page } from '$app/state';
   import AdminShell from '$lib/components/AdminShell.svelte';
@@ -51,19 +53,3 @@
 
 <Toast />
 
-<style>
-  :global(html, body) {
-    font-family: "Inter", "Segoe UI", sans-serif;
-  }
-
-  :global(button),
-  :global(input),
-  :global(select),
-  :global(textarea) {
-    font: inherit;
-  }
-
-  :global(h1, h2, h3, h4, h5, h6) {
-    font-family: "Inter", "Segoe UI", sans-serif;
-  }
-</style>

frontend/src/routes/+page.svelte

@@ -6,7 +6,18 @@
   import type { DashboardSummary } from '$lib/types';
   import { canOpenEditor, getWorkspaceHomeHref } from '$lib/workspace-access';
   import packageInfo from '../../package.json';
-  import { Sunrise, Sun, Sunset, Moon } from 'lucide-svelte';
+  import {
+    ArrowUpRight,
+    BadgeDollarSign,
+    Factory,
+    PackageCheck,
+    Scale,
+    Sun,
+    Sunrise,
+    Sunset,
+    TriangleAlert,
+    Moon
+  } from 'lucide-svelte';
   import { tick } from 'svelte';
 
   type Segment = {
@@ -115,6 +126,13 @@
     return `$${value.toFixed(digits)}`;
   }
 
+  function kg(value: number | null | undefined) {
+    if (value === null || value === undefined) {
+      return '0 kg';
+    }
+    return `${value.toLocaleString(undefined, { maximumFractionDigits: 0 })} kg`;
+  }
+
   function formatDate(value: string | null | undefined) {
     if (!value) {
       return 'No date';
@@ -314,6 +332,7 @@
   const trendArea = $derived(areaPath(trendSeries));
   const trendFocus = $derived(focusMarker(trendSeries));
   const topProducts = $derived(summary?.products?.top_products ?? []);
+  const operations = $derived(summary?.operations ?? null);
   const focusCards = $derived(buildFocusCards(summary));
   const loading = $derived(summary === null);
   const greeting = $derived(timeOfDay());
@@ -465,7 +484,7 @@
   </div>
   <div class="intro-actions">
     {#if canOpenEditor($clientSession)}
-      <a class="primary-button" href="/editor">Open Editor</a>
+      <a class="primary-button" href="/editor">Open Mix Editor</a>
     {/if}
   </div>
 </section>
@@ -610,6 +629,146 @@
   </div>
 </section>
 
+<section class="operations-report">
+  <div class="card-toolbar operations-toolbar">
+    <div class="operations-heading">
+      <span class="operations-icon"><Factory size={24} strokeWidth={2.2} /></span>
+      <div>
+        <h3>Production And Pricing</h3>
+        <p>Throughput and Product Costing for {operations?.period_label ?? 'this month'}</p>
+      </div>
+    </div>
+
+    <a class="secondary-button compact operations-link" href="/product-costing">
+      Open Product Costing
+      <ArrowUpRight size={15} strokeWidth={2.3} />
+    </a>
+  </div>
+
+  <div class="operations-graphic" aria-hidden="true">
+    <div class="operations-graphic-labels">
+      <span>Throughput</span>
+      <span>Costing</span>
+      <span>Pricing</span>
+    </div>
+    <div class="operations-graphic-track">
+      <span class="operation-node production-node"></span>
+      <span class="operation-track"></span>
+      <span class="operation-bars">
+        <i></i>
+        <i></i>
+        <i></i>
+      </span>
+      <span class="operation-node pricing-node"></span>
+    </div>
+  </div>
+
+  <div class="operations-metrics">
+    <article class="produced">
+      <div class="metric-label">
+        <span>Produced</span>
+        <span class="metric-symbol"><PackageCheck size={17} strokeWidth={2.2} /></span>
+      </div>
+      {#if loading}
+        <strong><Skeleton width="6rem" height="1.5rem" /></strong>
+      {:else}
+        <strong>{kg(operations?.total_kg)}</strong>
+      {/if}
+      <p>{operations?.entry_count ?? 0} throughput entries</p>
+    </article>
+    <article class="bags">
+      <div class="metric-label">
+        <span>Bags</span>
+        <span class="metric-symbol"><Scale size={17} strokeWidth={2.2} /></span>
+      </div>
+      {#if loading}
+        <strong><Skeleton width="5rem" height="1.5rem" /></strong>
+      {:else}
+        <strong>{(operations?.total_bags ?? 0).toLocaleString(undefined, { maximumFractionDigits: 0 })}</strong>
+      {/if}
+      <p>Logged as bag runs</p>
+    </article>
+    <article class="value">
+      <div class="metric-label">
+        <span>Wholesale Value</span>
+        <span class="metric-symbol"><BadgeDollarSign size={17} strokeWidth={2.2} /></span>
+      </div>
+      {#if loading}
+        <strong><Skeleton width="7rem" height="1.5rem" /></strong>
+      {:else}
+        <strong>{currency(operations?.estimated_wholesale_value)}</strong>
+      {/if}
+      <p>{operations?.priced_entry_count ?? 0} priced entries</p>
+    </article>
+    <article class:warning={(operations?.pricing_issues?.total ?? 0) > 0}>
+      <div class="metric-label">
+        <span>Pricing Issues</span>
+        <span class="metric-symbol"><TriangleAlert size={17} strokeWidth={2.2} /></span>
+      </div>
+      {#if loading}
+        <strong><Skeleton width="4rem" height="1.5rem" /></strong>
+      {:else}
+        <strong>{operations?.pricing_issues?.total ?? 0}</strong>
+      {/if}
+      <p>Products needing review</p>
+    </article>
+  </div>
+
+  <div class="operations-grid">
+    <article>
+      <div class="mini-heading">
+        <strong>Top Produced</strong>
+        <span>By kg</span>
+      </div>
+      <div class="report-list">
+        {#if loading}
+          {#each Array(4) as _}
+            <div><Skeleton width="10rem" /><Skeleton width="4rem" /></div>
+          {/each}
+        {:else if operations?.top_products?.length}
+          {#each operations.top_products as product}
+            <div>
+              <span>
+                <strong>{product.product_name}</strong>
+                <small>{product.client_name ?? 'No client'} · {product.entries} entries</small>
+              </span>
+              <em>{kg(product.kg)}</em>
+            </div>
+          {/each}
+        {:else}
+          <p>No throughput recorded this month.</p>
+        {/if}
+      </div>
+    </article>
+
+    <article>
+      <div class="mini-heading">
+        <strong>Produced But Not Priced</strong>
+        <span>Fix these first</span>
+      </div>
+      <div class="report-list">
+        {#if loading}
+          {#each Array(4) as _}
+            <div><Skeleton width="10rem" /><Skeleton width="4rem" /></div>
+          {/each}
+        {:else if operations?.produced_not_priced?.length}
+          {#each operations.produced_not_priced as product}
+            <div>
+              <span>
+                <strong>{product.product_name}</strong>
+                <small>{product.warnings[0] ?? product.status}</small>
+              </span>
+              <em>{kg(product.kg)}</em>
+            </div>
+          {/each}
+        {:else}
+          <p>All produced products have usable pricing.</p>
+        {/if}
+      </div>
+    </article>
+  </div>
+</section>
+
 <section class="analysis-grid">
   <article class="panel-card chart-card">
     <div class="card-toolbar">
@@ -1094,6 +1253,7 @@
   .workspace-banner,
   .focus-row,
   .dashboard-grid,
+  .operations-report,
   .analysis-grid,
   .detail-grid {
     margin-bottom: 1.25rem;
@@ -1177,15 +1337,15 @@
 
   .primary-button {
     border: none;
-    color: #fff;
+    color: var(--color-on-brand);
     background: var(--color-brand);
     box-shadow: none;
   }
 
   .secondary-button {
-    border: 1px solid var(--line-strong);
+    border: 1px solid var(--color-border);
-    color: #304038;
+    color: var(--color-text-primary);
-    background: #fff;
+    background: var(--color-bg-surface);
   }
 
   .secondary-button.compact {
@@ -1206,6 +1366,276 @@
     padding: 1.2rem;
   }
 
+  .operations-report {
+    position: relative;
+    overflow: hidden;
+    padding: 1.2rem;
+    border: 1px solid var(--color-border);
+    border-radius: 1.4rem;
+    background: var(--color-bg-surface);
+    box-shadow: var(--shadow);
+  }
+
+  .operations-toolbar {
+    margin-bottom: 0.9rem;
+  }
+
+  .operations-heading {
+    display: flex;
+    align-items: center;
+    gap: 0.85rem;
+    min-width: 0;
+  }
+
+  .operations-heading h3 {
+    margin: 0 0 0.18rem;
+    color: var(--text);
+  }
+
+  .operations-heading p {
+    margin: 0;
+    color: var(--muted);
+  }
+
+  .operations-icon {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    width: 3.1rem;
+    height: 3.1rem;
+    flex-shrink: 0;
+    border: 1px solid rgba(21, 128, 61, 0.18);
+    border-radius: 1rem;
+    background: #f0f8f3;
+    color: #0f6f3d;
+    box-shadow: inset 0 -0.45rem 1rem rgba(21, 128, 61, 0.08);
+  }
+
+  .operations-graphic {
+    display: grid;
+    gap: 0.5rem;
+    margin-bottom: 0.95rem;
+    padding: 0.75rem 0.85rem;
+    border: 1px solid rgba(214, 228, 220, 0.86);
+    border-radius: 1rem;
+    background: rgba(255, 255, 255, 0.62);
+    box-shadow: inset 0 -0.6rem 1.4rem rgba(21, 128, 61, 0.06);
+  }
+
+  .operations-graphic-labels,
+  .operations-graphic-track {
+    display: grid;
+    grid-template-columns: 2.25rem minmax(4rem, 1fr) 4.5rem 2.25rem;
+    align-items: center;
+    gap: 0.45rem;
+  }
+
+  .operations-graphic-labels {
+    grid-template-columns: repeat(3, minmax(0, 1fr));
+    color: #365243;
+    font-size: 0.72rem;
+    font-weight: 800;
+    letter-spacing: 0.04em;
+    text-transform: uppercase;
+  }
+
+  .operations-graphic-labels span:nth-child(2) {
+    text-align: center;
+  }
+
+  .operations-graphic-labels span:nth-child(3) {
+    text-align: right;
+  }
+
+  .operation-node {
+    display: block;
+    width: 2.25rem;
+    height: 2.25rem;
+    border-radius: 0.8rem;
+    background: #0f6f3d;
+    box-shadow: inset 0 -0.35rem 0.65rem rgba(0, 0, 0, 0.12);
+  }
+
+  .pricing-node {
+    background: #e7ad3c;
+  }
+
+  .operation-track {
+    align-self: center;
+    height: 0.24rem;
+    border-radius: 999px;
+    background: linear-gradient(90deg, rgba(21, 128, 61, 0.22), rgba(59, 130, 196, 0.58), rgba(231, 173, 60, 0.55));
+  }
+
+  .operation-bars {
+    display: flex;
+    align-items: end;
+    justify-content: center;
+    gap: 0.28rem;
+    height: 2.4rem;
+  }
+
+  .operation-bars i {
+    display: block;
+    width: 0.7rem;
+    border-radius: 999px 999px 0.25rem 0.25rem;
+    background: #3b82c4;
+  }
+
+  .operation-bars i:nth-child(1) {
+    height: 1.2rem;
+  }
+
+  .operation-bars i:nth-child(2) {
+    height: 2rem;
+    background: #15803d;
+  }
+
+  .operation-bars i:nth-child(3) {
+    height: 1.55rem;
+    background: #e7ad3c;
+  }
+
+  .operations-link {
+    gap: 0.45rem;
+    white-space: nowrap;
+  }
+
+  .operations-metrics {
+    display: grid;
+    grid-template-columns: repeat(4, minmax(0, 1fr));
+    gap: 0.8rem;
+    margin-bottom: 1rem;
+  }
+
+  .operations-metrics article {
+    position: relative;
+    overflow: hidden;
+    padding: 0.95rem;
+    border: 1px solid rgba(214, 228, 220, 0.94);
+    border-radius: 1rem;
+    background: rgba(255, 255, 255, 0.84);
+    box-shadow: 0 0.75rem 1.4rem rgba(43, 57, 47, 0.05);
+  }
+
+  .operations-metrics article::after {
+    content: '';
+    position: absolute;
+    right: 0.85rem;
+    bottom: 0;
+    left: 0.85rem;
+    height: 0.24rem;
+    border-radius: 999px 999px 0 0;
+    background: #15803d;
+    opacity: 0.65;
+  }
+
+  .operations-metrics article.bags::after {
+    background: #3b82c4;
+  }
+
+  .operations-metrics article.value::after {
+    background: #e7ad3c;
+  }
+
+  .operations-metrics article.warning {
+    border-color: rgba(231, 173, 60, 0.44);
+    background: #fff8e8;
+  }
+
+  .operations-metrics article.warning::after {
+    background: #b45309;
+  }
+
+  .metric-label {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 0.65rem;
+  }
+
+  .metric-symbol {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+    color: #0f6f3d;
+  }
+
+  .bags .metric-symbol {
+    color: #2f6f9f;
+  }
+
+  .value .metric-symbol {
+    color: #9a6718;
+  }
+
+  .warning .metric-symbol {
+    color: #9a3412;
+  }
+
+  .metric-label span,
+  .operations-metrics p,
+  .mini-heading span,
+  .report-list small {
+    color: var(--muted);
+  }
+
+  .operations-metrics strong {
+    display: block;
+    margin: 0.4rem 0 0.25rem;
+    font-size: 1.55rem;
+    line-height: 1;
+  }
+
+  .operations-grid {
+    display: grid;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    gap: 1rem;
+  }
+
+  .operations-grid > article {
+    padding-top: 0.9rem;
+    border-top: 1px solid var(--line);
+  }
+
+  .mini-heading,
+  .report-list div {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 0.8rem;
+  }
+
+  .mini-heading {
+    margin-bottom: 0.65rem;
+  }
+
+  .report-list {
+    display: grid;
+    gap: 0.55rem;
+  }
+
+  .report-list div {
+    padding: 0.65rem 0;
+    border-bottom: 1px solid var(--line);
+  }
+
+  .report-list div:last-child {
+    border-bottom: none;
+  }
+
+  .report-list strong,
+  .report-list small {
+    display: block;
+  }
+
+  .report-list em {
+    flex-shrink: 0;
+    font-style: normal;
+    font-weight: 700;
+  }
+
   .focus-grid {
     display: grid;
     grid-template-columns: repeat(3, minmax(0, 1fr));
@@ -1249,15 +1679,15 @@
   }
 
   .focus-card.positive {
-    background: linear-gradient(180deg, #f6fbf7 0%, #edf8f0 100%);
+    background: var(--color-success-tint);
   }
 
   .focus-card.warning {
-    background: linear-gradient(180deg, #fffaf3 0%, #fff3e3 100%);
+    background: var(--color-warning-tint);
   }
 
   .focus-card.neutral {
-    background: linear-gradient(180deg, #f7faf8 0%, #eff4f1 100%);
+    background: var(--panel-soft);
   }
 
   .focus-code {
@@ -1267,8 +1697,8 @@
     align-items: center;
     justify-content: center;
     border-radius: 0.75rem;
-    color: #fff;
+    color: var(--color-on-brand);
-    background: var(--green-deep);
+    background: var(--color-brand);
     font-size: 0.74rem;
     font-weight: 700;
     letter-spacing: 0.05em;
@@ -1369,8 +1799,9 @@
   }
 
   .toggle-pill .active {
-    color: #fff;
+    color: var(--color-text-primary);
-    background: var(--green-deep);
+    background: var(--color-bg-surface);
+    border: 1px solid var(--color-border);
   }
 
   .market-layout {
@@ -1410,7 +1841,11 @@
     height: 8.5rem;
     flex-shrink: 0;
     border-radius: 1.4rem;
-    background: linear-gradient(180deg, #d7f0ff 0%, #fff0bf 45%, #89c762 46%, #3f8e3d 100%);
+    background: linear-gradient(
+      150deg,
+      var(--color-brand) 0%,
+      color-mix(in srgb, var(--color-brand) 70%, var(--color-text-primary)) 100%
+    );
     overflow: hidden;
   }
 
@@ -1421,7 +1856,12 @@
     width: 2.9rem;
     height: 2.9rem;
     border-radius: 999px;
-    background: radial-gradient(circle at 35% 35%, #fff8cc 0%, #ffd865 58%, #f4ae1f 100%);
+    background: radial-gradient(
+      circle at 38% 38%,
+      color-mix(in srgb, var(--color-on-brand) 38%, transparent) 0%,
+      color-mix(in srgb, var(--color-on-brand) 12%, transparent) 62%,
+      transparent 72%
+    );
   }
 
   .field-stripe {
@@ -1430,7 +1870,7 @@
     right: -10%;
     height: 22%;
     border-radius: 999px;
-    background: rgba(255, 255, 255, 0.18);
+    background: color-mix(in srgb, var(--color-on-brand) 16%, transparent);
     transform: rotate(-18deg);
   }
 
@@ -1864,10 +2304,15 @@
 
   @media (max-width: 1120px) {
     .analysis-grid,
-    .detail-grid {
+    .detail-grid,
+    .operations-grid {
       grid-template-columns: 1fr;
     }
 
+    .operations-link {
+      justify-self: start;
+    }
+
     .focus-grid {
       min-width: 0;
     }
@@ -1889,6 +2334,10 @@
     .focus-grid {
       grid-template-columns: 1fr;
     }
+
+    .operations-metrics {
+      grid-template-columns: repeat(2, minmax(0, 1fr));
+    }
   }
 
   @media (prefers-reduced-motion: reduce) {
@@ -1935,10 +2384,15 @@
     }
 
     .preview-facts,
+    .operations-metrics,
     .signin-form {
       grid-template-columns: 1fr;
     }
 
+    .operations-graphic {
+      width: 100%;
+    }
+
     .field-emblem {
       width: 6.5rem;
       height: 6.5rem;

frontend/src/routes/+page.ts

@@ -8,7 +8,8 @@ const EMPTY_SUMMARY: DashboardSummary = {
   raw_materials: null,
   mixes: null,
   products: null,
-  trend_seeds: { raw_material_cost_per_kg: [], mix_cost_per_kg: [], product_finished_delivered: [] }
+  trend_seeds: { raw_material_cost_per_kg: [], mix_cost_per_kg: [], product_finished_delivered: [] },
+  operations: null
 };
 
 // Streaming load: the route shell paints immediately and the dashboard fills

frontend/src/routes/editor/+page.svelte

@@ -1,6 +1,7 @@
 <script lang="ts">
   import { api } from '$lib/api';
   import { toast } from '$lib/toast';
+  import AppSecondaryRailLayout from '$lib/components/navigation/AppSecondaryRailLayout.svelte';
   import type { EditorProductFormula, EditorProductIngredient, EditorProductRow, RawMaterial } from '$lib/types';
   import { ChevronLeft, ChevronRight, FlaskConical, ListFilter, Save, Search, X } from 'lucide-svelte';
   import { fade } from 'svelte/transition';
@@ -345,49 +346,22 @@
   });
 </script>
 
-<section class="editor">
+<AppSecondaryRailLayout>
-  <div class="status-band">
+  {#snippet rail()}
-    <div class="editor-status">
+    <div class="filter-rail" aria-label="Mix Editor filters">
-      <span>
+      <p class="rail-label">Mix Editor</p>
-        <strong>Editor</strong>
+
-        <small>{visibleRows.length} products across {uniqueMixCount} mixes</small>
+      <div class="rail-identity">
-      </span>
+        <div class="rail-avatar" aria-hidden="true">
+          <ListFilter size={16} strokeWidth={1.8} />
+        </div>
+        <div class="rail-identity-text">
+          <p class="identity-name">Filter products</p>
+          <p class="identity-role">{visibleRows.length} matching rows</p>
+        </div>
       </div>
 
-    <dl class="facts">
+      <div class="filter-rail-body">
-      <div class="fact">
-        <dt>Products</dt>
-        <dd>{visibleRows.length}</dd>
-      </div>
-      <div class="fact">
-        <dt>Mixes</dt>
-        <dd>{uniqueMixCount}</dd>
-      </div>
-      <div class="fact">
-        <dt>Unsaved</dt>
-        <dd>{dirtyCount}</dd>
-      </div>
-    </dl>
-  </div>
-
-  <section class="filters" aria-label="Editor filters">
-    <div class="filter-head">
-      <div>
-        <span class="section-label">
-          <ListFilter size={15} strokeWidth={2.2} />
-          Filters
-        </span>
-        <strong>{visibleRows.length} matching products</strong>
-      </div>
-
-      {#if filtersActive}
-        <button type="button" class="clear-button" onclick={clearFilters}>
-          <X size={16} strokeWidth={2.4} /> Clear filters
-        </button>
-      {/if}
-    </div>
-
-    <div class="filter-grid">
         <label class="filter-search">
           <span>Search</span>
           <div class="search-input">
@@ -429,8 +403,40 @@
             {/each}
           </select>
         </label>
+
+        {#if filtersActive}
+          <button type="button" class="clear-button rail-clear" onclick={clearFilters}>
+            <X size={16} strokeWidth={2.4} /> Clear filters
+          </button>
+        {/if}
+      </div>
+    </div>
+  {/snippet}
+
+  <section class="editor">
+    <div class="status-band">
+      <div class="editor-status">
+        <span>
+          <strong>Mix Editor</strong>
+          <small>{visibleRows.length} products across {uniqueMixCount} mixes</small>
+        </span>
+      </div>
+
+      <dl class="facts">
+        <div class="fact">
+          <dt>Products</dt>
+          <dd>{visibleRows.length}</dd>
+        </div>
+        <div class="fact">
+          <dt>Mixes</dt>
+          <dd>{uniqueMixCount}</dd>
+        </div>
+        <div class="fact">
+          <dt>Unsaved</dt>
+          <dd>{dirtyCount}</dd>
+        </div>
+      </dl>
     </div>
-  </section>
 
     <div class="pagination-bar" aria-label="Product table pagination">
     <span>{pageStart}-{pageEnd} of {visibleRows.length}</span>
@@ -578,13 +584,102 @@
     {/each}
     </div>
   </section>
+</AppSecondaryRailLayout>
 
 <style>
   .editor {
     display: flex;
     flex-direction: column;
-    gap: 1rem;
+    gap: 0.9rem;
-    padding: 0.5rem 0 2rem;
+    min-height: 100%;
+    padding: 1rem 1.15rem 2rem;
+    background: #e8eee9;
+  }
+
+  :global(.secondary-rail-layout) {
+    margin-bottom: 1.25rem;
+  }
+
+  :global(.secondary-rail-layout-panel),
+  :global(.secondary-rail-layout-content) {
+    background: #e8eee9;
+  }
+
+  .filter-rail {
+    position: sticky;
+    top: 0;
+    display: flex;
+    flex-direction: column;
+    gap: 0.25rem;
+    height: 100%;
+    min-height: calc(100vh - 8.5rem);
+    background: color-mix(in srgb, var(--panel-soft) 46%, #dfe7e1);
+    border-right: 1px solid var(--line);
+    overflow-y: auto;
+  }
+
+  .rail-label {
+    margin: 0;
+    padding: 1rem 1rem 0.15rem;
+    color: color-mix(in srgb, var(--muted) 88%, #a3aea7);
+    font-size: 0.64rem;
+    font-weight: 700;
+    letter-spacing: 0.14em;
+    text-transform: uppercase;
+  }
+
+  .rail-identity {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    padding: 0 1rem 1.15rem;
+    border-bottom: 1px solid color-mix(in srgb, var(--line) 78%, transparent);
+  }
+
+  .rail-avatar {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    flex-shrink: 0;
+    width: 2.15rem;
+    height: 2.15rem;
+    border: 1px solid color-mix(in srgb, var(--line) 72%, transparent);
+    border-radius: 50%;
+    background: color-mix(in srgb, var(--panel) 80%, #edf2ee);
+    color: #6b786f;
+  }
+
+  .rail-identity-text {
+    min-width: 0;
+  }
+
+  .identity-name,
+  .identity-role {
+    margin: 0;
+  }
+
+  .identity-name {
+    color: #526059;
+    font-size: 0.8rem;
+    font-weight: 600;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .identity-role {
+    color: #8a9790;
+    font-size: 0.72rem;
+  }
+
+  .filter-rail-body {
+    display: grid;
+    gap: 0.85rem;
+    padding: 0.8rem 0.8rem 1rem;
+  }
+
+  .rail-clear {
+    width: 100%;
   }
 
   .status-band {
@@ -706,39 +801,6 @@
     padding-inline: 0.2rem;
   }
 
-  .filters {
-    display: flex;
-    flex-direction: column;
-    gap: 0.85rem;
-    padding: 0.9rem;
-    background: var(--color-bg-surface);
-    border: 1px solid var(--color-border);
-    border-radius: 0.9rem;
-  }
-
-  .filter-head {
-    display: flex;
-    align-items: center;
-    justify-content: space-between;
-    gap: 1rem;
-    padding-bottom: 0.8rem;
-    border-bottom: 1px solid var(--color-divider);
-  }
-
-  .filter-head div {
-    display: flex;
-    flex-direction: column;
-    gap: 0.25rem;
-    min-width: 0;
-  }
-
-  .filter-head strong {
-    color: var(--color-text-primary);
-    font-size: 1rem;
-    font-weight: 700;
-  }
-
-  .section-label,
   .field-label {
     display: inline-flex;
     align-items: center;
@@ -748,13 +810,6 @@
     font-weight: 700;
   }
 
-  .filter-grid {
-    display: grid;
-    grid-template-columns: minmax(18rem, 1.4fr) minmax(15rem, 0.95fr) minmax(13rem, 0.8fr) minmax(13rem, 0.9fr) minmax(9rem, 0.5fr);
-    gap: 0.65rem;
-    align-items: end;
-  }
-
   .pagination-bar {
     display: flex;
     align-items: center;
@@ -1130,8 +1185,7 @@
       justify-content: flex-start;
     }
 
-    .ingredient-grid,
+    .ingredient-grid {
-    .filter-grid {
       grid-template-columns: 1fr;
     }
 
@@ -1140,14 +1194,28 @@
     }
   }
 
-  @media (max-width: 760px) {
+  @media (max-width: 980px) {
-    .filter-head {
+    .filter-rail {
-      align-items: stretch;
+      position: static;
-      flex-direction: column;
+      min-height: auto;
+      height: auto;
+      border-right: none;
+      overflow: visible;
     }
 
-    .filter-head .clear-button {
+    .filter-rail-body {
-      width: 100%;
+      grid-template-columns: repeat(2, minmax(0, 1fr));
+      align-items: end;
+    }
+
+    .filter-search {
+      grid-column: 1 / -1;
+    }
+  }
+
+  @media (max-width: 760px) {
+    .filter-rail-body {
+      grid-template-columns: 1fr;
     }
 
     .facts {

frontend/src/routes/load-fetch.test.ts

@@ -11,6 +11,7 @@ const apiMocks = vi.hoisted(() => ({
   productCosts: vi.fn(),
   scenarios: vi.fn(),
   dataQuality: vi.fn(),
+  dashboardSummary: vi.fn(),
   clientAccess: vi.fn(),
   clientAccessExport: vi.fn()
 }));
@@ -61,6 +62,13 @@ describe('route loaders use the SvelteKit fetch argument', () => {
     apiMocks.productCosts.mockResolvedValue([{ id: 4 }]);
     apiMocks.scenarios.mockResolvedValue([{ id: 5 }]);
     apiMocks.dataQuality.mockResolvedValue([{ id: 6 }]);
+    apiMocks.dashboardSummary.mockResolvedValue({
+      raw_materials: null,
+      mixes: null,
+      products: null,
+      trend_seeds: { raw_material_cost_per_kg: [], mix_cost_per_kg: [], product_finished_delivered: [] },
+      operations: null
+    });
     apiMocks.clientAccess.mockResolvedValue([{ id: 7 }]);
     apiMocks.clientAccessExport.mockResolvedValue({
       generated_at: '',
@@ -74,13 +82,10 @@ describe('route loaders use the SvelteKit fetch argument', () => {
   });
 
   it('passes fetch through the home page loader', async () => {
-    await homeLoad({ fetch: fetcher } as never);
+    const result = homeLoad({ fetch: fetcher } as never);
+    await result.summary;
 
-    expect(apiMocks.rawMaterials).toHaveBeenCalledWith(fetcher);
+    expect(apiMocks.dashboardSummary).toHaveBeenCalledWith(fetcher);
-    expect(apiMocks.mixes).toHaveBeenCalledWith(fetcher);
-    expect(apiMocks.productCosts).toHaveBeenCalledWith(fetcher);
-    expect(apiMocks.scenarios).toHaveBeenCalledWith(fetcher);
-    expect(apiMocks.dataQuality).toHaveBeenCalledWith(fetcher);
   });
 
   it('passes fetch through the raw materials loader', async () => {

frontend/src/routes/mix-calculator/+page.svelte

@@ -63,7 +63,7 @@
         <thead>
           <tr>
             <th>Session</th>
-            <th>Client / Product</th>
+            <th>Client / Mix</th>
             <th>Batch</th>
             <th>Bags</th>
             <th>Prepared by</th>
@@ -78,7 +78,7 @@
                 <strong>{session.session_number}</strong>
                 <span>{session.mix_name}</span>
               </td>
-              <td data-label="Client / Product">
+              <td data-label="Client / Mix">
                 <strong>{session.product_name}</strong>
                 <span>{session.client_name}</span>
               </td>

frontend/src/routes/product-costing/+page.ts

@@ -0,0 +1,30 @@
+import { redirect } from '@sveltejs/kit';
+import { api } from '$lib/api';
+import { getStoredClientSession, hasModuleAccess, hasStoredClientSession } from '$lib/session';
+import { canOpenProductCosting, getWorkspaceHomeHref } from '$lib/workspace-access';
+
+export async function load({ fetch }) {
+  if (!hasStoredClientSession()) {
+    return { items: [], inputs: null };
+  }
+
+  const session = getStoredClientSession();
+  if (!canOpenProductCosting(session)) {
+    throw redirect(307, getWorkspaceHomeHref(session));
+  }
+
+  try {
+    const canRead = hasModuleAccess(session, 'products') || session?.role === 'internal';
+    if (!canRead) {
+      return { items: [], inputs: null };
+    }
+
+    const [items, inputs] = await Promise.all([
+      api.productCostingItems(fetch),
+      api.productCostingInputs(fetch)
+    ]);
+    return { items, inputs };
+  } catch {
+    return { items: [], inputs: null };
+  }
+}

frontend/src/routes/throughput/add/+page.svelte

@@ -8,6 +8,7 @@
   } from '$lib/types';
   import { CheckCircle2, AlertTriangle, ArrowLeft } from 'lucide-svelte';
   import ThroughputProductPicker from '$lib/components/throughput/ThroughputProductPicker.svelte';
+  import { toNum } from '$lib/format';
 
   let { data } = $props<{ data: { products: ThroughputProduct[] } }>();
   const products = $derived(data.products ?? []);
@@ -53,13 +54,6 @@
     }
   });
 
-  function toNum(value: string): number | null {
-    const trimmed = value.trim();
-    if (!trimmed) return null;
-    const n = Number(trimmed);
-    return Number.isFinite(n) ? n : null;
-  }
-
   function resetExceptDateAndStaff() {
     productId = '';
     bagSize = '';