feat: add Turborepo per-project monorepo scaffold and project API

- Add Turborepo scaffold templates (apps: product, website, admin, storybook; packages: ui, tokens, types, config)
- Add ProjectRecord and AppRecord types to control plane
- Add Gitea integration service (repo creation, scaffold push, webhooks)
- Add Coolify integration service (project + per-app service provisioning with turbo --filter)
- Add project routes: GET/POST /projects, GET /projects/:id/apps, POST /projects/:id/deploy
- Update chat route to inject project/monorepo context into AI requests
- Add deploy_app and scaffold_app tools to Gemini tool set
- Update deploy executor with monorepo-aware /execute/deploy endpoint
- Add TURBOREPO_MIGRATION_PLAN.md documenting rationale and scope

Co-authored-by: Cursor <cursoragent@cursor.com>

platform/scripts/templates/turborepo/package.json

@@ -0,0 +1,20 @@
+{
+  "name": "{{project-slug}}",
+  "private": true,
+  "scripts": {
+    "build": "turbo run build",
+    "dev": "turbo run dev",
+    "lint": "turbo run lint",
+    "type-check": "turbo run type-check",
+    "test": "turbo run test",
+    "clean": "turbo run clean && rm -rf node_modules"
+  },
+  "devDependencies": {
+    "turbo": "^2.3.3"
+  },
+  "packageManager": "pnpm@9.15.0",
+  "workspaces": [
+    "apps/*",
+    "packages/*"
+  ]
+}