Add backend foundation and config-driven workbench

backend/migrations/0002_launch.sql

@@ -0,0 +1,72 @@
+BEGIN;
+
+CREATE TABLE events (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  tenant_id UUID REFERENCES tenants(id) ON DELETE SET NULL,
+  event_public_id TEXT NOT NULL UNIQUE,
+  slug TEXT NOT NULL UNIQUE,
+  display_name TEXT NOT NULL,
+  summary TEXT,
+  status TEXT NOT NULL DEFAULT 'draft' CHECK (status IN ('draft', 'active', 'disabled', 'archived')),
+  current_release_id UUID,
+  created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+  updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX events_tenant_id_idx ON events(tenant_id);
+CREATE INDEX events_status_idx ON events(status);
+
+CREATE TRIGGER events_set_updated_at
+BEFORE UPDATE ON events
+FOR EACH ROW EXECUTE FUNCTION set_updated_at();
+
+CREATE TABLE event_releases (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  release_public_id TEXT NOT NULL UNIQUE,
+  event_id UUID NOT NULL REFERENCES events(id) ON DELETE CASCADE,
+  release_no INTEGER NOT NULL,
+  config_label TEXT NOT NULL,
+  manifest_url TEXT NOT NULL,
+  manifest_checksum_sha256 TEXT,
+  route_code TEXT,
+  status TEXT NOT NULL DEFAULT 'published' CHECK (status IN ('draft', 'published', 'retired', 'failed')),
+  payload_jsonb JSONB NOT NULL DEFAULT '{}'::jsonb,
+  published_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+  UNIQUE (event_id, release_no)
+);
+
+CREATE INDEX event_releases_event_id_idx ON event_releases(event_id);
+CREATE INDEX event_releases_status_idx ON event_releases(status);
+
+ALTER TABLE events
+ADD CONSTRAINT events_current_release_fk
+FOREIGN KEY (current_release_id) REFERENCES event_releases(id) ON DELETE SET NULL;
+
+CREATE TABLE game_sessions (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  session_public_id TEXT NOT NULL UNIQUE,
+  user_id UUID NOT NULL REFERENCES users(id) ON DELETE RESTRICT,
+  event_id UUID NOT NULL REFERENCES events(id) ON DELETE RESTRICT,
+  event_release_id UUID NOT NULL REFERENCES event_releases(id) ON DELETE RESTRICT,
+  device_key TEXT NOT NULL,
+  client_type TEXT NOT NULL CHECK (client_type IN ('app', 'wechat')),
+  route_code TEXT,
+  status TEXT NOT NULL DEFAULT 'launched' CHECK (status IN ('launched', 'running', 'finished', 'failed', 'cancelled')),
+  session_token_hash TEXT NOT NULL UNIQUE,
+  session_token_expires_at TIMESTAMPTZ NOT NULL,
+  launched_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+  started_at TIMESTAMPTZ,
+  ended_at TIMESTAMPTZ,
+  created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+  updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX game_sessions_user_id_idx ON game_sessions(user_id);
+CREATE INDEX game_sessions_event_id_idx ON game_sessions(event_id);
+CREATE INDEX game_sessions_status_idx ON game_sessions(status);
+
+CREATE TRIGGER game_sessions_set_updated_at
+BEFORE UPDATE ON game_sessions
+FOR EACH ROW EXECUTE FUNCTION set_updated_at();
+
+COMMIT;