feat(db): recipe_views table mit Profil-FK und Recent-Index

Tracking-Tabelle fuer Sort-Option Zuletzt angesehen. Composite-PK
(profile_id, recipe_id) erlaubt INSERT OR REPLACE per Default-Timestamp.
Index nach profile_id + last_viewed_at DESC fuer Sort-Query.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/lib/server/db/migrations/014_recipe_views.sql

@@ -0,0 +1,8 @@
+CREATE TABLE recipe_views (
+  profile_id INTEGER NOT NULL REFERENCES profile(id) ON DELETE CASCADE,
+  recipe_id INTEGER NOT NULL REFERENCES recipe(id) ON DELETE CASCADE,
+  last_viewed_at TEXT NOT NULL DEFAULT (datetime('now')),
+  PRIMARY KEY (profile_id, recipe_id)
+);
+CREATE INDEX idx_recipe_views_recent
+  ON recipe_views (profile_id, last_viewed_at DESC);

tests/integration/recipe-views.test.ts

@@ -0,0 +1,30 @@
+import { describe, it, expect } from 'vitest';
+import { openInMemoryForTest } from '../../src/lib/server/db';
+
+describe('014_recipe_views migration', () => {
+  it('creates recipe_views table with expected columns', () => {
+    const db = openInMemoryForTest();
+    const cols = db.prepare("PRAGMA table_info(recipe_views)").all() as Array<{
+      name: string;
+      type: string;
+      notnull: number;
+      pk: number;
+    }>;
+    const byName = Object.fromEntries(cols.map((c) => [c.name, c]));
+    expect(byName.profile_id?.type).toBe('INTEGER');
+    expect(byName.profile_id?.notnull).toBe(1);
+    expect(byName.profile_id?.pk).toBe(1);
+    expect(byName.recipe_id?.type).toBe('INTEGER');
+    expect(byName.recipe_id?.pk).toBe(2);
+    expect(byName.last_viewed_at?.type).toBe('TEXT');
+    expect(byName.last_viewed_at?.notnull).toBe(1);
+  });
+
+  it('has index on (profile_id, last_viewed_at DESC)', () => {
+    const db = openInMemoryForTest();
+    const idxList = db
+      .prepare("PRAGMA index_list(recipe_views)")
+      .all() as Array<{ name: string }>;
+    expect(idxList.some((i) => i.name === 'idx_recipe_views_recent')).toBe(true);
+  });
+});