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.

cmd/jiggablend/cmd/runner.go

@@ -38,7 +38,6 @@ func init() {
 	runnerCmd.Flags().BoolP("verbose", "v", false, "Enable verbose logging (same as --log-level=debug)")
 	runnerCmd.Flags().Duration("poll-interval", 5*time.Second, "Job polling interval")
 	runnerCmd.Flags().Bool("force-cpu-rendering", false, "Force CPU rendering for all jobs (disables GPU rendering)")
-	runnerCmd.Flags().Bool("disable-hiprt", false, "Disable HIPRT acceleration in Blender Cycles")
 
 	// Bind flags to viper with JIGGABLEND_ prefix
 	runnerViper.SetEnvPrefix("JIGGABLEND")
@@ -54,7 +53,6 @@ func init() {
 	runnerViper.BindPFlag("verbose", runnerCmd.Flags().Lookup("verbose"))
 	runnerViper.BindPFlag("poll_interval", runnerCmd.Flags().Lookup("poll-interval"))
 	runnerViper.BindPFlag("force_cpu_rendering", runnerCmd.Flags().Lookup("force-cpu-rendering"))
-	runnerViper.BindPFlag("disable_hiprt", runnerCmd.Flags().Lookup("disable-hiprt"))
 }
 
 func runRunner(cmd *cobra.Command, args []string) {
@@ -68,7 +66,6 @@ func runRunner(cmd *cobra.Command, args []string) {
 	verbose := runnerViper.GetBool("verbose")
 	pollInterval := runnerViper.GetDuration("poll_interval")
 	forceCPURendering := runnerViper.GetBool("force_cpu_rendering")
-	disableHIPRT := runnerViper.GetBool("disable_hiprt")
 
 	var r *runner.Runner
 
@@ -124,7 +121,7 @@ func runRunner(cmd *cobra.Command, args []string) {
 	}
 
 	// Create runner
-	r = runner.New(managerURL, name, hostname, forceCPURendering, disableHIPRT)
+	r = runner.New(managerURL, name, hostname, forceCPURendering)
 
 	// Check for required tools early to fail fast
 	if err := r.CheckRequiredTools(); err != nil {
@@ -167,8 +164,8 @@ func runRunner(cmd *cobra.Command, args []string) {
 		runnerID, err = r.Register(apiKey)
 		if err == nil {
 			logger.Infof("Registered runner with ID: %d", runnerID)
-			// Download latest Blender and detect HIP vs NVIDIA so we only force CPU for Blender < 4.x when using HIP
-			logger.Info("Detecting GPU backends (HIP/NVIDIA) for Blender < 4.x policy...")
+			// Detect GPU vendors/backends from host hardware so we only force CPU for Blender < 4.x when using AMD.
+			logger.Info("Detecting GPU backends (AMD/NVIDIA/Intel) from host hardware for Blender < 4.x policy...")
 			r.DetectAndStoreGPUBackends()
 			break
 		}