Refactor installation and runner scripts for enhanced usability and security

- Updated the installation script to clarify that production wrappers do not include fixed test secrets, improving user guidance for local testing.
- Modified the jiggablend-manager and jiggablend-runner scripts to remove fixed test configurations, emphasizing the use of local test credentials via `make init-test`.
- Enhanced error handling in the runner script to ensure that an API key is provided, improving security and user feedback.
- Added new flags and options for the runner, including sandboxing capabilities and GPU ray tracing control, enhancing flexibility for users.
- Improved README documentation to reflect changes in usage and configuration, ensuring users have clear instructions for setup and execution.

internal/runner/tasks/render_test.go

@@ -4,13 +4,42 @@ import "testing"
 
 func TestCheckGPUErrorLine_TriggersCallback(t *testing.T) {
 	p := NewRenderProcessor()
-	triggered := false
+	triggered := 0
 	ctx := &Context{
-		OnGPUError: func() { triggered = true },
+		OnGPUError: func() {
+			triggered++
+			// Simulate runner arming lockout for this attempt.
+		},
 	}
 	p.checkGPUErrorLine(ctx, "Fatal: Illegal address in HIP kernel execution")
-	if !triggered {
-		t.Fatal("expected GPU error callback to be triggered")
+	if triggered != 1 {
+		t.Fatalf("expected GPU error callback once, got %d", triggered)
+	}
+	// After arming, further fault lines must not re-fire (spam protection).
+	ctx.GPULockoutArmedThisAttempt = true
+	p.checkGPUErrorLine(ctx, "page not present in GPU memory")
+	if triggered != 1 {
+		t.Fatalf("expected no further callbacks after arm, got %d", triggered)
+	}
+}
+
+func TestCheckGPUErrorLine_SkipsWhenAlreadyLockedOut(t *testing.T) {
+	p := NewRenderProcessor()
+	triggered := false
+	ctx := &Context{
+		GPULockedOut: true,
+		OnGPUError:   func() { triggered = true },
+	}
+	p.checkGPUErrorLine(ctx, "Illegal address in HIP")
+	if triggered {
+		t.Fatal("did not expect callback when GPU already locked out")
+	}
+}
+
+func TestGetBlenderVersion_EmptyWhenMissing(t *testing.T) {
+	ctx := &Context{}
+	if got := ctx.GetBlenderVersion(); got != "" {
+		t.Fatalf("expected empty blender version, got %q", got)
 	}
 }