fix: SQLite boolean binding, CSS brace, race condition, 0 npm vulns, code-splitting

backend/src/database/DatabaseInterface.ts

@@ -79,6 +79,26 @@ export interface DBSession {
   created_at: string;
 }
 
+export interface DBNotification {
+  id: string;
+  user_id: string;
+  type: string;
+  title: string;
+  message: string;
+  read: number;
+  created_at: string;
+}
+
+export interface DBProjectShare {
+  id: string;
+  project_id: string;
+  shared_with_email: string;
+  shared_by: string;
+  permission: string;
+  share_token: string | null;
+  created_at: string;
+}
+
 export interface DatabaseInterface {
   init(): Promise<void>;
   close(): void;
@@ -132,4 +152,17 @@ export interface DatabaseInterface {
   getSession(token: string): DBSession | null;
   deleteSession(token: string): boolean;
   deleteExpiredSessions(): void;
+
+  // Notifications
+  listNotifications(userId: string): DBNotification[];
+  getNotification(id: string): DBNotification | null;
+  createNotification(data: Partial<DBNotification>): DBNotification;
+  markNotificationRead(id: string): boolean;
+  deleteNotification(id: string): boolean;
+
+  // Project Shares
+  listProjectShares(projectId: string): DBProjectShare[];
+  getProjectShare(id: string): DBProjectShare | null;
+  createProjectShare(data: Partial<DBProjectShare>): DBProjectShare;
+  deleteProjectShare(id: string): boolean;
 }