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/processor_test.go

@@ -8,7 +8,7 @@ import (
 )
 
 func TestNewContext_NormalizesFrameEnd(t *testing.T) {
-	ctx := NewContext(1, 2, "job", 10, 1, "render", "/tmp", "tok", nil, nil, nil, nil, nil, nil, nil, false, false, false, false, false, false, nil)
+	ctx := NewContext(1, 2, "job", 10, 1, "render", "/tmp", "tok", nil, nil, nil, nil, nil, nil, nil, false, false, false, false, false, false, false, 0, nil, nil)
 	if ctx.FrameEnd != 10 {
 		t.Fatalf("expected FrameEnd to be normalized to Frame, got %d", ctx.FrameEnd)
 	}
@@ -16,8 +16,8 @@ func TestNewContext_NormalizesFrameEnd(t *testing.T) {
 
 func TestContext_GetOutputFormat_Default(t *testing.T) {
 	ctx := &Context{}
-	if got := ctx.GetOutputFormat(); got != "PNG" {
-		t.Fatalf("GetOutputFormat() = %q, want PNG", got)
+	if got := ctx.GetOutputFormat(); got != "EXR" {
+		t.Fatalf("GetOutputFormat() = %q, want EXR", got)
 	}
 }