feat: add tags, albums, and audit log tables

packages/db/migrations/0004_tags_albums_audit.sql

@@ -0,0 +1,34 @@
+CREATE TABLE IF NOT EXISTS tags (
+  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  name text NOT NULL UNIQUE,
+  created_at timestamptz NOT NULL DEFAULT now()
+);
+
+CREATE TABLE IF NOT EXISTS asset_tags (
+  asset_id uuid NOT NULL REFERENCES assets(id) ON DELETE CASCADE,
+  tag_id uuid NOT NULL REFERENCES tags(id) ON DELETE CASCADE,
+  PRIMARY KEY(asset_id, tag_id)
+);
+
+CREATE TABLE IF NOT EXISTS albums (
+  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  name text NOT NULL,
+  created_at timestamptz NOT NULL DEFAULT now()
+);
+
+CREATE TABLE IF NOT EXISTS album_assets (
+  album_id uuid NOT NULL REFERENCES albums(id) ON DELETE CASCADE,
+  asset_id uuid NOT NULL REFERENCES assets(id) ON DELETE CASCADE,
+  ord int,
+  PRIMARY KEY(album_id, asset_id)
+);
+
+CREATE TABLE IF NOT EXISTS audit_log (
+  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+  actor text NOT NULL,
+  action text NOT NULL,
+  entity_type text NOT NULL,
+  entity_id uuid,
+  payload jsonb,
+  created_at timestamptz NOT NULL DEFAULT now()
+);