Phase 1: mobile-first pantry redesign with In/Low/Out state

Track presence (In/Low/Out) as the primary signal instead of exact
quantities; quantity becomes an optional integer, unit optional too
(migration 0003 backfills state from quantity: 0 -> out, else in).

- Pantry rebuilt as a phone-first card list: colored state rail,
  segmented In/Low/Out switch (server-driven HTMX), greyed out-items,
  live summary counts.
- Fast add: bottom add bar with type-ahead autocomplete, location
  picker, and quick-add chips for things you've run out of.
- Per-item menu (move / set expiry / delete); expiry is now an
  optional quiet pill, never required.
- New endpoints: pantry search + set-state; dropped the old
  edit-expiry/cancel flow and its partial.
- Recipes matcher made presence-based (have-it beats have-enough);
  state added to admin. Tests cover state, add/restock, search,
  presence matching, and page rendering.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

kitchen/management/commands/seed.py

@@ -94,14 +94,15 @@ class Command(BaseCommand):
         # --- Pantry Items (from current Pantry.md as of 31 Mar 2026) ---
         self.stdout.write("Creating pantry items...")
 
-        def add_pantry(name, qty, unit, location, expiry=None, is_staple=False, notes=""):
+        def add_pantry(name, qty, unit, location, expiry=None, is_staple=False, notes="", state="in"):
             # Use ingredient + location for lookup so same ingredient can exist
             # in multiple locations (e.g. sausages in fridge AND freezer)
             PantryItem.objects.get_or_create(
                 ingredient=ingredients[name],
                 location=location,
                 defaults={
-                    "quantity": Decimal(str(qty)),
+                    "state": state,
+                    "quantity": int(qty),
                     "unit": unit,
                     "expiry_date": expiry,
                     "is_staple": is_staple,
@@ -132,7 +133,7 @@ class Command(BaseCommand):
             add_pantry(name, 1, "n/a", "cupboard", is_staple=True)
 
         # Out of stock (for reference)
-        add_pantry("eggs", 0, "items", "fridge", notes="OUT — restock")
+        add_pantry("eggs", 0, "items", "fridge", notes="OUT — restock", state="out")
         add_pantry("baked beans", 1, "tins", "cupboard")
         add_pantry("freezer bags", 1, "boxes", "cupboard")