feat: Add "version" and "os" fields to rice database

- The rice database now includes new fields:
  - `version`: Represents the version of the rice entry.
  - `os`: Represents the operating system associated with the rice entry.
- These fields are required for all new rice entries.

refactor: Stop uploading rice.json to GitHub
- The `rice.json` file is no longer uploaded to GitHub during rice creation or updates.
- This reduces redundancy as all metadata is now managed directly in the database (Supabase).

fix: Improve exception handling with proper HTTP status codes
- Enhanced exception handling to align with standard HTTP status codes:
  - `BadRequestException` for validation errors.
  - `ConflictException` for duplicate entries.
  - `NotFoundException` for missing resources.
  - Generic `InternalServerErrorException` for unexpected errors.
- This ensures the API returns meaningful and accurate responses.

feat: Enhance rice download to act as a standard HTTP GET
- The `findOne` method now returns the raw content of the rice file directly as the response body.
- Removes unnecessary JSON wrappers, allowing the endpoint to behave like a typical HTTP GET request.
- Improved usability for clients consuming the API.

src/supabase/supabase.service.ts

@@ -55,7 +55,7 @@ export class SupabaseService {
         `Failed to fetch rice with slug ${slug}: ${error.message}`,
         error.details,
       );
-      throw new Error(`Failed to fetch rice: ${error.message}`);
+      return null;
     }
     return data;
   }