feat(db): add meal_plans, slots, prep_sessions, prep_tasks migrations (022-025)

app/db/migrations/022_meal_plans.sql

@@ -0,0 +1,8 @@
+-- 022_meal_plans.sql
+CREATE TABLE meal_plans (
+  id          INTEGER PRIMARY KEY,
+  week_start  TEXT    NOT NULL,
+  meal_types  TEXT    NOT NULL DEFAULT '["dinner"]',
+  created_at  TEXT    NOT NULL DEFAULT (datetime('now')),
+  updated_at  TEXT    NOT NULL DEFAULT (datetime('now'))
+);

app/db/migrations/023_meal_plan_slots.sql

@@ -0,0 +1,11 @@
+-- 023_meal_plan_slots.sql
+CREATE TABLE meal_plan_slots (
+  id           INTEGER PRIMARY KEY,
+  plan_id      INTEGER NOT NULL REFERENCES meal_plans(id) ON DELETE CASCADE,
+  day_of_week  INTEGER NOT NULL CHECK(day_of_week BETWEEN 0 AND 6),
+  meal_type    TEXT    NOT NULL,
+  recipe_id    INTEGER REFERENCES recipes(id),
+  servings     REAL    NOT NULL DEFAULT 2.0,
+  custom_label TEXT,
+  UNIQUE(plan_id, day_of_week, meal_type)
+);

app/db/migrations/024_prep_sessions.sql

@@ -0,0 +1,10 @@
+-- 024_prep_sessions.sql
+CREATE TABLE prep_sessions (
+  id             INTEGER PRIMARY KEY,
+  plan_id        INTEGER NOT NULL REFERENCES meal_plans(id) ON DELETE CASCADE,
+  scheduled_date TEXT    NOT NULL,
+  status         TEXT    NOT NULL DEFAULT 'draft'
+                         CHECK(status IN ('draft','reviewed','done')),
+  created_at     TEXT    NOT NULL DEFAULT (datetime('now')),
+  updated_at     TEXT    NOT NULL DEFAULT (datetime('now'))
+);

app/db/migrations/025_prep_tasks.sql

@@ -0,0 +1,15 @@
+-- 025_prep_tasks.sql
+CREATE TABLE prep_tasks (
+  id               INTEGER PRIMARY KEY,
+  session_id       INTEGER NOT NULL REFERENCES prep_sessions(id) ON DELETE CASCADE,
+  recipe_id        INTEGER REFERENCES recipes(id),
+  slot_id          INTEGER REFERENCES meal_plan_slots(id),
+  task_label       TEXT    NOT NULL,
+  duration_minutes INTEGER,
+  sequence_order   INTEGER NOT NULL,
+  equipment        TEXT,
+  is_parallel      INTEGER NOT NULL DEFAULT 0,
+  notes            TEXT,
+  user_edited      INTEGER NOT NULL DEFAULT 0,
+  created_at       TEXT    NOT NULL DEFAULT (datetime('now'))
+);