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.

packages/shared-types/src/analytics.ts

@@ -53,6 +53,7 @@ export const ANALYTICS_COOKING_EVENT_NAMES = [
   "cooking_session_started",
   "cooking_session_completed",
   "cooking_session_cancelled",
+  "cooking_session_undone",
   "leftovers_created",
   "substitution_confirmed",
 ] as const;

packages/shared-types/src/enums.ts

@@ -413,6 +413,9 @@ export const EVENT_TYPES = [
   "WEEK_PLAN_UPDATED",
   "MEAL_BOX_CREATED",
   "MEAL_BOX_CONSUMED",
+  "MEAL_BOX_DISCARDED",
+  "MEAL_REMOVED",
+  "COOKING_SESSION_UNDONE",
 ] as const;
 export type EventType = (typeof EVENT_TYPES)[number];
 
@@ -433,6 +436,20 @@ export const MEAL_LOG_SOURCES = [
 ] as const;
 export type MealLogSource = (typeof MEAL_LOG_SOURCES)[number];
 
+/** Cooking session lifecycle (Fas 3 §6). TEXT i databasen, valideras mot denna const. */
+export const COOKING_SESSION_STATUSES = [
+  "planned",
+  "started",
+  "completed",
+  "cancelled",
+  "undone",
+] as const;
+export type CookingSessionStatus = (typeof COOKING_SESSION_STATUSES)[number];
+
+/** Matlådestatuser (spec §24). TEXT i databasen, valideras mot denna const. */
+export const MEAL_BOX_STATUSES = ["available", "consumed", "discarded"] as const;
+export type MealBoxStatus = (typeof MEAL_BOX_STATUSES)[number];
+
 // ---------------------------------------------------------------------------
 // Smakprofil & feedback (spec §30)
 // ---------------------------------------------------------------------------