feat(notifications): alert oversight review queues

database/schema.sql

@@ -67,6 +67,28 @@ CREATE TABLE IF NOT EXISTS notification_preferences (
 	updated_at TEXT NOT NULL,
 	PRIMARY KEY(user_id, category)
 );
+CREATE TABLE IF NOT EXISTS oversight_notification_preferences (
+	user_id TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+	oversight_category TEXT NOT NULL CHECK(oversight_category IN ('data_changes', 'avatars')),
+	frequency TEXT NOT NULL DEFAULT 'immediate' CHECK(frequency IN ('immediate', '15_minutes', '1_hour', 'daily')),
+	updated_at TEXT NOT NULL,
+	PRIMARY KEY(user_id, oversight_category)
+);
+CREATE TABLE IF NOT EXISTS oversight_notification_queue (
+	id TEXT PRIMARY KEY,
+	user_id TEXT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+	oversight_category TEXT NOT NULL CHECK(oversight_category IN ('data_changes', 'avatars')),
+	review_item_id TEXT NOT NULL,
+	title TEXT NOT NULL,
+	summary TEXT NOT NULL,
+	link TEXT NOT NULL,
+	frequency TEXT NOT NULL CHECK(frequency IN ('15_minutes', '1_hour', 'daily')),
+	created_at TEXT NOT NULL,
+	deliver_after TEXT NOT NULL,
+	delivered_at TEXT
+);
+CREATE INDEX IF NOT EXISTS oversight_notification_queue_due_idx ON oversight_notification_queue(delivered_at, deliver_after);
+CREATE INDEX IF NOT EXISTS oversight_notification_queue_user_category_idx ON oversight_notification_queue(user_id, oversight_category, delivered_at);
 CREATE INDEX IF NOT EXISTS avatar_reviews_status_submitted_idx ON avatar_reviews(status, submitted_at DESC);
 CREATE INDEX IF NOT EXISTS avatar_reviews_user_submitted_idx ON avatar_reviews(user_id, submitted_at DESC);
   CREATE TABLE IF NOT EXISTS builds (id TEXT PRIMARY KEY, owner_id TEXT NOT NULL REFERENCES users(id), title TEXT NOT NULL, slug TEXT NOT NULL UNIQUE, visibility TEXT NOT NULL DEFAULT 'private', summary TEXT, guide_body TEXT, source_build_id TEXT REFERENCES builds(id), loadout_json TEXT, created_at TEXT NOT NULL, updated_at TEXT NOT NULL);