3c: partial consumption + undo for cooking sessions

- Append-only undo via correction transactions tied to cookingSessionId.
- POST /v1/cooking-sessions/:id/undo with 24h UTC window (409 + i18n after expiry).
- Complete undo scope: meals removed, meal boxes discarded, recipe_cooks
deleted, cookCount decremented; activation milestones left intact.
- Deterministic assumption-profile rollback via lastSessionAnswers.sessionId;
profile deleted when observationCount reaches 0.
- New status 'undone' as TEXT validated against COOKING_SESSION_STATUSES.
- Analytics event cooking_session_undone + domain events MEAL_BOX_DISCARDED,
MEAL_REMOVED, COOKING_SESSION_UNDONE.
- Partial consumption uses actualPortionsEaten/plannedPortions factor.
- i18n coverage for cooked.undoWindowExpired across all 12 locales + server.
- Invariant tests: computeBalance(transactions) === item.quantity after
complete, undo, and undo + new complete; transaction count increases on undo.
- Migration 0014_expand_event_types.sql adds new enum values.
- Updated FAS3-COOKING-SESSIONS-AUDIT.md with chosen semantics.

infrastructure/migrations/0014_expand_event_types.sql

@@ -0,0 +1,4 @@
+-- Expandera event_type-enum med nya domänhändelser för 3c (undo/partiell förbrukning).
+ALTER TYPE "event_type" ADD VALUE IF NOT EXISTS 'MEAL_BOX_DISCARDED';
+ALTER TYPE "event_type" ADD VALUE IF NOT EXISTS 'MEAL_REMOVED';
+ALTER TYPE "event_type" ADD VALUE IF NOT EXISTS 'COOKING_SESSION_UNDONE';

infrastructure/migrations/meta/_journal.json

@@ -92,6 +92,13 @@
       "when": 1786049332540,
       "tag": "0013_dark_the_anarchist",
       "breakpoints": true
+    },
+    {
+      "idx": 13,
+      "version": "7",
+      "when": 1786055900000,
+      "tag": "0014_expand_event_types",
+      "breakpoints": true
     }
   ]
 }