feat: shopping list rename/delete, item reorder+categories+search, ingredient-quantity parsing fix

- Fixed a real i18n bug: the checked-count line called the wrong
  translation namespace and rendered the literal key on screen
- Shopping lists can now be renamed and deleted from both the list index
  and detail pages (API already supported delete; rename was net new)
- Root-caused "long list UI is off": meal-plan-generated lists never set
  an aisle, so every item fell into one undifferentiated "Other" bucket
  despite the grouping UI existing. Added a keyword-based aisle guesser
  wired into list generation (fallback only, never overrides an explicit
  aisle) plus a one-click "auto-categorize" for existing lists
- Items can now be reordered by drag-and-drop within a category (dnd-kit),
  recategorized via a dropdown, deleted, searched, and sorted (category /
  alphabetical / unchecked-first); searching flattens the grouped view
- Fixed a separate bug: AI-generated ingredients sometimes embedded the
  quantity/unit in the name itself (e.g. "2 cups flour" as one string).
  Added extractIngredientQuantity() as a Zod transform at both recipe
  create/update routes (the choke point every creation path funnels
  through) to split it back out, plus schema descriptions on the AI
  ingredient schemas as a prevention layer

New migration 0028 (shopping_list_items.sort_order), left unapplied like
the others. Verified with typecheck, lint, and a clean --no-cache docker
build.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/web/messages/en.json

@@ -654,6 +654,16 @@
     "aisleOther": "Other",
     "listEmptyState": "This list is empty.",
     "checkedCount": "{checked}/{total} checked",
+    "searchItemsPlaceholder": "Search items…",
+    "sortByCategory": "By category",
+    "sortByAlpha": "Alphabetical",
+    "sortByUnchecked": "Unchecked first",
+    "noSearchResults": "No items match your search.",
+    "autoCategorize": "Auto-categorize",
+    "autoCategorizeSuccess": "{count, plural, one {1 item categorized} other {{count} items categorized}}",
+    "autoCategorizeNoneFound": "Couldn't guess a category for the remaining items",
+    "removeItemConfirmTitle": "Remove item?",
+    "removeItemConfirmDescription": "Remove \"{name}\" from this list?",
     "moveToPantry": "Move {count} to pantry",
     "listCreated": "List created",
     "days": {
@@ -803,7 +813,20 @@
     "ingredientsWillBeAdded": "{count, plural, one {1 ingredient will be added.} other {{count} ingredients will be added.}}",
     "adding": "Adding…",
     "addIngredients": "Add ingredients",
-    "addedCount": "{count} ingredients added to list"
+    "addedCount": "{count} ingredients added to list",
+    "actionsMenuLabel": "List actions",
+    "rename": "Rename",
+    "renameListTitle": "Rename list",
+    "renameListLabel": "List name",
+    "renaming": "Saving…",
+    "listRenamed": "List renamed",
+    "listRenameFailed": "Failed to rename list",
+    "deleteListConfirmTitle": "Delete list?",
+    "deleteListConfirmDescription": "This action cannot be undone. The list and all its items will be permanently deleted.",
+    "listDeleted": "List deleted",
+    "listDeleteFailed": "Failed to delete list",
+    "changeCategory": "Change category",
+    "deleteItem": "Delete item"
   },
   "collections": {
     "title": "Collections",