feat(03-01): add Module SDK package and Prisma module registry schema

- Create @tessera/module-sdk with TesseraModule, ModuleRoute, ModuleManifest, ModuleCategory types
- Add Module and TenantModuleActivation Prisma models with tenant-scoped unique constraint
- Apply migration add-module-registry to PostgreSQL
- Framework-agnostic ComponentType for lazy-loaded module UIs

packages/module-sdk/package.json

@@ -0,0 +1,13 @@
+{
+  "name": "@tessera/module-sdk",
+  "version": "0.1.0",
+  "private": true,
+  "main": "src/index.ts",
+  "types": "src/index.ts",
+  "scripts": {
+    "type-check": "tsc --noEmit"
+  },
+  "devDependencies": {
+    "typescript": "^5.5.0"
+  }
+}