[plan] Standardize error messages to use console.FormatErrorMessage()

[github-actions]

Objective

Convert all user-facing error messages to use console.FormatErrorMessage() and ensure they go to stderr for consistency.

Context

From discussion #11611: Multiple CLI files use direct fmt.Printf for error messages instead of the standardized console formatting. This affects user experience and consistency.

Files with Issues: commands.go, git.go, file_tracker.go, run_workflow_tracking.go

Approach

1. Audit each file for error message patterns:

   • Search for fmt.Printf with error-related text
   • Identify messages that should use console.FormatErrorMessage()
   • Ensure output goes to stderr

2. Convert error messages:

   • Use fmt.Fprintln(os.Stderr, console.FormatErrorMessage(...))
   • Maintain clear, actionable error messages
   • Ensure proper error wrapping with %w

3. Test changes:

   • Verify errors display correctly in terminal
   • Test non-TTY mode strips ANSI codes
   • Run existing tests to ensure no regressions

Files to Modify

• Update: pkg/cli/commands.go
• Update: pkg/cli/git.go
• Update: pkg/cli/file_tracker.go
• Update: pkg/cli/run_workflow_tracking.go

Pattern to Follow

// ❌ WRONG - Direct fmt.Printf without console formatting:
fmt.Printf("Error: Failed to process workflow: %v\n", err)

// ✅ CORRECT - Console formatted error to stderr:
fmt.Fprintln(os.Stderr, console.FormatErrorMessage(err.Error()))

// ✅ CORRECT - With context:
fmt.Fprintln(os.Stderr, console.FormatErrorMessage(fmt.Sprintf("Failed to process workflow: %v", err)))

Acceptance Criteria

• All error messages in commands.go use console formatting
• All error messages in git.go use console formatting
• All error messages in file_tracker.go use console formatting
• All error messages in run_workflow_tracking.go use console formatting
• All error output goes to stderr
• Existing tests pass
• Code passes make fmt and make lint
• make agent-finish completes successfully

Priority

Phase 2: Standardize Error Messages (4-6 hours estimated)

AI generated by Plan Command for discussion #11611

[github-actions]

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