feat: enhance API route naming conventions and structure

- Added comprehensive guidelines for API route naming and structure in `ROUTE_NAMING_BEST_PRACTICES.md`.
- Updated `ARCHITECHTURE.md` to reference the new best practices document.
- Refactored course-related routes to follow new naming conventions, including changes to endpoint paths and validation schemas.
- Removed the deprecated course clone route and integrated cloning functionality directly into the course routes.
- Adjusted various API methods to ensure consistent usage of HTTP methods and parameter structures across the application.

apps/dashboard/src/lib/features/org/api/dash-stats.svelte.ts

@@ -21,8 +21,8 @@ class DashStatApi extends BaseApi {
    * @returns Organization analytics data (enrollments, courses, revenue, students, top courses)
    */
   async fetchOrgStats({ orgId, siteName }: { orgId?: string; siteName?: string }) {
-    await this.execute<typeof classroomio.dash.stats.$post>({
-      requestFn: () => classroomio.dash.stats.$post({ json: { orgId, siteName } }),
+    await this.execute<typeof classroomio.dash.stats.$get>({
+      requestFn: () => classroomio.dash.stats.$get({ query: { orgId, siteName } }),
       logContext: 'fetching organization stats',
       onSuccess: (response) => {
         this.stats = response.data;