Enhance logging and error handling across tools; add full tool audit and Playwright tests

- Added model mismatch warnings in colorize, enhance-faces, and upscale routes.
- Improved error handling in colorize, enhance_faces, remove_bg, restore, and upscale scripts with detailed logging.
- Updated Dockerfile to align NCCL versions for compatibility.
- Introduced a new full tool audit script to test all tools for functionality and GPU usage.
- Created Playwright E2E tests for GPU-dependent tools to ensure proper functionality and performance.

apps/api/src/routes/tools/remove-background.ts

@@ -145,6 +145,7 @@ export function registerRemoveBackground(app: FastifyInstance) {
           originalSize: fileBuffer.length,
           processedSize: transparentResult.length,
           filename,
+          model: settings.model,
         });
       } catch (err) {
         request.log.error({ err, toolId: "remove-background" }, "Background removal failed");