v0.1.32 - Mix Calculator search, ingredient categories, throughput tidy-up

Mix Calculator: searchable Mix Name picker (mirrors Throughput search)

Ingredients Editor: add manual Category column; used to order Mix Calculator output

Mix Calculator: surface formula-only mixes (no product yet) via -mix_id sentinel

Throughput: remove unused For order / For stock destination controls from composer

Editor change history: show timestamps in local time (stored UTC) instead of raw UTC

frontend/src/lib/components/throughput/ThroughputComposer.svelte

@@ -251,68 +251,6 @@
     font-variant-numeric: tabular-nums;
   }
 
-  .add-dest {
-    gap: 0.4rem;
-  }
-
-  .dest-rows {
-    display: flex;
-    flex-direction: column;
-    gap: 0.4rem;
-  }
-
-  .dest-line {
-    display: flex;
-    align-items: center;
-    gap: 0.5rem;
-  }
-
-  .dest-line .dest-toggle {
-    flex: 0 0 auto;
-    min-width: 8.5rem;
-  }
-
-  .dest-line .dest-input {
-    flex: 1 1 auto;
-    min-width: 0;
-    width: auto;
-  }
-
-  .dest-toggle {
-    display: inline-flex;
-    align-items: center;
-    gap: 0.4rem;
-    padding: 0.4rem 0.68rem;
-    border: 1px solid color-mix(in srgb, var(--color-brand) 14%, var(--color-border));
-    border-radius: 0.72rem;
-    background: var(--color-bg-surface);
-    font-size: 0.88rem;
-    font-weight: 600;
-    color: var(--color-text-secondary);
-    cursor: pointer;
-    user-select: none;
-  }
-
-  .dest-toggle input {
-    width: 1.2rem;
-    height: 1.2rem;
-    min-height: 0;
-    margin: 0;
-    flex-shrink: 0;
-    accent-color: var(--color-brand);
-    cursor: pointer;
-  }
-
-  .dest-toggle.on {
-    border-color: var(--color-brand);
-    background: var(--color-brand-tint);
-    color: var(--color-success);
-  }
-
-  .dest-input {
-    width: 100%;
-  }
-
   .add-action {
     justify-content: center;
   }
@@ -459,7 +397,6 @@
 
     .add-cell:nth-child(2),
     .add-cell:nth-child(3),
-    .add-dest,
     .add-action {
       grid-column: 1 / -1;
     }
@@ -490,7 +427,6 @@
     }
 
     .add-cell:nth-child(2),
-    .add-dest,
     .add-action {
       grid-column: 1 / -1;
     }