Improve backend error handling, fix lean logo on login screen

backend/pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "data-entry-app-backend"
-version = "0.1.3"
+version = "0.1.4"
 description = "Costing platform MVP backend"
 requires-python = ">=3.11"
 dependencies = [

frontend/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "data-entry-app-frontend",
-  "version": "0.1.2",
+  "version": "0.1.4",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "data-entry-app-frontend",
-      "version": "0.1.2",
+      "version": "0.1.4",
       "devDependencies": {
         "@sveltejs/adapter-auto": "^3.2.0",
         "@sveltejs/adapter-node": "^5.2.12",

frontend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "data-entry-app-frontend",
-  "version": "0.1.3",
+  "version": "0.1.4",
   "private": true,
   "type": "module",
   "scripts": {

frontend/src/lib/api.test.ts

@@ -57,4 +57,24 @@ describe('api fetch injection', () => {
     expect(injectedFetch.mock.calls[0]?.[0]).toBe(`http://127.0.0.1:8000${path}`);
     expect(globalFetch).not.toHaveBeenCalled();
   });
+
+  it('shows a backend-unavailable message for login network failures', async () => {
+    globalThis.fetch = vi.fn(async () => {
+      throw new TypeError('Failed to fetch');
+    }) as typeof fetch;
+
+    await expect(api.clientLogin('user@example.com', 'secret')).rejects.toThrow(
+      'Unable to reach the server. Check that the backend is running and try again.'
+    );
+  });
+
+  it('shows a backend-unavailable message for authenticated read network failures', async () => {
+    const injectedFetch = vi.fn(async () => {
+      throw new TypeError('NetworkError when attempting to fetch resource.');
+    }) as typeof fetch;
+
+    await expect(api.rawMaterials(injectedFetch)).rejects.toThrow(
+      'Unable to reach the server. Check that the backend is running and try again.'
+    );
+  });
 });

frontend/src/lib/api.ts

@@ -37,6 +37,7 @@ import type {
 import { getStoredAdminSession, getStoredClientSession } from '$lib/session';
 
 const DEFAULT_API_PORT = env.PUBLIC_API_PORT || '8000';
+const BACKEND_UNAVAILABLE_MESSAGE = 'Unable to reach the server. Check that the backend is running and try again.';
 
 type AuthMode = 'none' | 'client' | 'admin' | 'manager';
 type ApiFetch = typeof fetch;
@@ -85,6 +86,24 @@ function getToken(auth: AuthMode) {
   return null;
 }
 
+function normalizeRequestError(error: unknown) {
+  if (error instanceof Error) {
+    const message = error.message.trim();
+    const isNetworkFetchFailure =
+      /failed to fetch|fetch failed|networkerror when attempting to fetch resource|load failed|network request failed/i.test(
+        message
+      ) || error.name === 'NetworkError';
+
+    if (isNetworkFetchFailure) {
+      return new Error(BACKEND_UNAVAILABLE_MESSAGE);
+    }
+
+    return error;
+  }
+
+  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> {
   try {
     const token = getToken(auth);
@@ -100,7 +119,7 @@ async function fetchJson<T>(path: string, fallback: T, auth: AuthMode = 'none',
     return (await response.json()) as T;
   } catch (error) {
     if (auth !== 'none') {
-      throw error;
+      throw normalizeRequestError(error);
     }
     return fallback;
   }
@@ -112,6 +131,7 @@ async function request<T>(
   auth: AuthMode = 'none',
   fetcher: ApiFetch = fetch
 ): Promise<T> {
+  try {
     const token = getToken(auth);
     const response = await fetcher(buildApiUrl(path), {
       headers: {
@@ -136,6 +156,9 @@ async function request<T>(
     }
 
     return (await response.json()) as T;
+  } catch (error) {
+    throw normalizeRequestError(error);
+  }
 }
 
 export const api = {

frontend/src/routes/+page.svelte

@@ -1,6 +1,5 @@
 <script lang="ts">
   import { api } from '$lib/api';
-  import Lean101Logo from '$lib/components/Lean101Logo.svelte';
   import { clientSession, sessionHydrated } from '$lib/session';
   import type { Mix, ProductCostBreakdown, RawMaterial } from '$lib/types';
   import packageInfo from '../../package.json';
@@ -28,8 +27,8 @@
   };
 
   let { data } = $props();
-  let email = $state('operator@example.com');
-  let password = $state('changeme');
+  let email = $state('');
+  let password = $state('');
   let isLoggingIn = $state(false);
   let loginError = $state('');
   let passwordInput: HTMLInputElement | null = null;
@@ -304,7 +303,7 @@
     <div class="auth-card auth-card-loading">
       <div class="auth-header">
         <div class="client-logo-block">
-          <Lean101Logo className="hero-logo" />
+          <img class="hero-login-logo" src="/lean101-login-logo.png" alt="Lean 101" />
           <div class="client-logo-copy">
             <p class="eyebrow">Client Workspace</p>
             <strong>Hunter Premium Produce</strong>
@@ -328,7 +327,7 @@
 
       <div class="auth-footer">
         <div class="lean-brand">
-          <Lean101Logo className="footer-logo" showTagline={false} />
+          <img class="footer-login-logo" src="/lean101-login-logo.png" alt="Lean 101" />
         </div>
         <div class="auth-meta">
           <span class="version-badge">
@@ -345,7 +344,7 @@
     <div class="auth-card auth-card-login">
       <div class="auth-header">
         <div class="client-logo-block">
-          <Lean101Logo className="hero-logo" />
+          <img class="hero-login-logo" src="/lean101-login-logo.png" alt="Lean 101" />
           <div class="client-logo-copy">
             <p class="eyebrow">Client Sign-In</p>
             <strong>Hunter Premium Produce</strong>
@@ -365,7 +364,7 @@
       <form class="signin-form auth-form" onsubmit={handleLogin}>
         <label class="field">
           <span>Email</span>
-          <input bind:value={email} type="email" autocomplete="username" placeholder="Email" />
+          <input bind:value={email} type="email" autocomplete="username" placeholder="Email" autofocus />
         </label>
 
         <label class="field field-password" class:is-invalid={Boolean(loginError)}>
@@ -390,7 +389,7 @@
 
       <div class="auth-footer">
         <div class="lean-brand">
-          <Lean101Logo className="footer-logo" showTagline={false} />
+          <img class="footer-login-logo" src="/lean101-login-logo.png" alt="Lean 101" />
         </div>
         <div class="auth-meta">
           <span class="version-badge">
@@ -798,20 +797,16 @@
     font-size: 0.88rem;
   }
 
-  :global(.hero-logo) {
+  .hero-login-logo {
     width: min(100%, 19rem);
+    height: auto;
+    display: block;
   }
 
-  :global(.hero-logo .logo-mark) {
-    width: 4.8rem;
-  }
-
-  :global(.hero-logo .logo-copy strong) {
-    font-size: clamp(2rem, 4.6vw, 3.2rem);
-  }
-
-  :global(.hero-logo .logo-copy small) {
-    font-size: 0.64rem;
+  .footer-login-logo {
+    width: 9.8rem;
+    height: auto;
+    display: block;
   }
 
   .auth-status-pill {
@@ -962,18 +957,6 @@
     align-items: center;
   }
 
-  :global(.footer-logo) {
-    width: 9.8rem;
-  }
-
-  :global(.footer-logo .logo-mark) {
-    width: 2rem;
-  }
-
-  :global(.footer-logo .logo-copy strong) {
-    font-size: 1.15rem;
-  }
-
   .auth-meta {
     display: grid;
     justify-items: end;