Add tests for main package, manager, and various components

- Introduced unit tests for the main package to ensure compilation.
- Added tests for the manager, including validation of upload sessions and handling of Blender binary paths.
- Implemented tests for job token generation and validation, ensuring security and integrity.
- Created tests for configuration management and database schema to verify functionality.
- Added tests for logger and runner components to enhance overall test coverage and reliability.

internal/runner/tasks/render.go

@@ -88,6 +88,11 @@ func (p *RenderProcessor) Process(ctx *Context) error {
 		ctx.Info("No Blender version specified, using system blender")
 	}
 
+	blenderBinary, err = blender.ResolveBinaryPath(blenderBinary)
+	if err != nil {
+		return fmt.Errorf("failed to resolve blender binary: %w", err)
+	}
+
 	// Create output directory
 	outputDir := filepath.Join(ctx.WorkDir, "output")
 	if err := os.MkdirAll(outputDir, 0755); err != nil {
@@ -202,8 +207,16 @@ func (p *RenderProcessor) createRenderScript(ctx *Context, renderFormat string)
 
 func (p *RenderProcessor) runBlender(ctx *Context, blenderBinary, blendFile, outputDir, renderFormat, blenderHome string) error {
 	scriptPath := filepath.Join(ctx.WorkDir, "enable_gpu.py")
+	blendFileAbs, err := filepath.Abs(blendFile)
+	if err != nil {
+		return fmt.Errorf("failed to resolve blend file path: %w", err)
+	}
+	scriptPathAbs, err := filepath.Abs(scriptPath)
+	if err != nil {
+		return fmt.Errorf("failed to resolve blender script path: %w", err)
+	}
 
-	args := []string{"-b", blendFile, "--python", scriptPath}
+	args := []string{"-b", blendFileAbs, "--python", scriptPathAbs}
 	if ctx.ShouldEnableExecution() {
 		args = append(args, "--enable-autoexec")
 	}
@@ -220,7 +233,7 @@ func (p *RenderProcessor) runBlender(ctx *Context, blenderBinary, blendFile, out
 		args = append(args, "-f", fmt.Sprintf("%d", ctx.Frame))
 	}
 
-	cmd := exec.Command(blenderBinary, args...)
+	cmd := execCommand(blenderBinary, args...)
 	cmd.Dir = ctx.WorkDir
 
 	// Set up environment: LD_LIBRARY_PATH for tarball Blender, then custom HOME