feat: add tenant and user management with migrations, handlers, and tests

- Implemented tenant and user management features including:
  - Tenant creation and management with associated migrations.
  - User creation and management with associated migrations.
  - Tenant membership management with associated migrations.
  - Platform user roles management with associated migrations.
  - Quota management with associated migrations.
  - Article and template management with associated migrations.
- Added HTTP handlers for templates and workspaces.
- Created tests for protected and public routes.
- Introduced a script to check tenant scope in SQL queries.
- Documented task plan for backend completion and frontend foundation.

package.json

@@ -0,0 +1,11 @@
+{
+  "name": "geo-rankly",
+  "private": true,
+  "packageManager": "pnpm@10.28.2",
+  "scripts": {
+    "dev:admin": "pnpm --filter admin-web dev",
+    "build:admin": "pnpm --filter admin-web build",
+    "typecheck:admin": "pnpm --filter admin-web typecheck"
+  }
+}
+