Refactor runner and installation scripts for improved functionality

- Removed the `--disable-hiprt` flag from the runner command, simplifying the rendering options for users.
- Updated the `jiggablend-runner` script and README to reflect the removal of the HIPRT control flag, enhancing clarity in usage instructions.
- Enhanced the installation script to provide clearer examples for running the jiggablend manager and runner, improving user experience during setup.
- Implemented a more robust GPU backend detection mechanism, allowing for better compatibility with various hardware configurations.

internal/manager/jobs.go

@@ -345,9 +345,9 @@ func (s *Manager) handleCreateJob(w http.ResponseWriter, r *http.Request) {
 	// Only create render tasks for render jobs
 	if req.JobType == types.JobTypeRender {
 		// Determine task timeout based on output format
-		taskTimeout := RenderTimeout // 1 hour for render jobs
+		taskTimeout := s.renderTimeout
 		if *req.OutputFormat == "EXR_264_MP4" || *req.OutputFormat == "EXR_AV1_MP4" || *req.OutputFormat == "EXR_VP9_WEBM" {
-			taskTimeout = VideoEncodeTimeout // 24 hours for encoding
+			taskTimeout = s.videoEncodeTimeout
 		}
 
 		// Create tasks for the job (batch INSERT in a single transaction)
@@ -390,7 +390,7 @@ func (s *Manager) handleCreateJob(w http.ResponseWriter, r *http.Request) {
 		// Create encode task immediately if output format requires it
 		// The task will have a condition that prevents it from being assigned until all render tasks are completed
 		if *req.OutputFormat == "EXR_264_MP4" || *req.OutputFormat == "EXR_AV1_MP4" || *req.OutputFormat == "EXR_VP9_WEBM" {
-			encodeTaskTimeout := VideoEncodeTimeout // 24 hours for encoding
+			encodeTaskTimeout := s.videoEncodeTimeout
 			conditionJSON := `{"type": "all_render_tasks_completed"}`
 			var encodeTaskID int64
 			err = s.db.With(func(conn *sql.DB) error {
@@ -2592,7 +2592,7 @@ func (s *Manager) handleDownloadJobFile(w http.ResponseWriter, r *http.Request)
 	}
 
 	// Set headers
-	w.Header().Set("Content-Disposition", fmt.Sprintf("%s; filename=%s", disposition, fileName))
+	w.Header().Set("Content-Disposition", fmt.Sprintf("%s; filename=%q", disposition, fileName))
 	w.Header().Set("Content-Type", contentType)
 
 	// Stream file
@@ -2710,7 +2710,7 @@ func (s *Manager) handleDownloadEXRZip(w http.ResponseWriter, r *http.Request) {
 
 	fileName := fmt.Sprintf("%s-exr.zip", safeJobName)
 	w.Header().Set("Content-Type", "application/zip")
-	w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=%s", fileName))
+	w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=%q", fileName))
 
 	zipWriter := zip.NewWriter(w)
 	defer zipWriter.Close()
@@ -2881,7 +2881,7 @@ func (s *Manager) handlePreviewEXR(w http.ResponseWriter, r *http.Request) {
 
 	// Set headers
 	pngFileName := strings.TrimSuffix(fileName, filepath.Ext(fileName)) + ".png"
-	w.Header().Set("Content-Disposition", fmt.Sprintf("inline; filename=%s", pngFileName))
+	w.Header().Set("Content-Disposition", fmt.Sprintf("inline; filename=%q", pngFileName))
 	w.Header().Set("Content-Type", "image/png")
 	w.Header().Set("Content-Length", strconv.Itoa(len(pngData)))