feat: add Prisma schema with User, Project, Module, Endpoint models

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/shared/src/types.ts

@@ -1,4 +1,7 @@
-// Shared types — will be populated as we build features
+import type { User, Project, Module, Endpoint, ModuleSource } from '@prisma/client';
+
+export type { User, Project, Module, Endpoint, ModuleSource };
+
 export type ApiResponse<T = unknown> = {
   success: boolean;
   data?: T;
@@ -7,3 +10,23 @@ export type ApiResponse<T = unknown> = {
     message: string;
   };
 };
+
+export type ProjectWithStats = Project & {
+  _count: { endpoints: number; modules: number };
+};
+
+export type ModuleWithCount = Module & {
+  _count: { endpoints: number };
+};
+
+export type EndpointSummary = {
+  id: string;
+  method: string;
+  path: string;
+  summary: string | null;
+  deprecated: boolean;
+};
+
+export type EndpointDetail = Endpoint & {
+  moduleName: string;
+};