[log] Add debug logging to 5 Go files for enhanced troubleshooting

[github-actions]

Summary

Enhanced 5 Go files with debug logging statements to improve troubleshooting and development workflow visibility. All changes follow the project's logging guidelines from AGENTS.md.

Files Enhanced

1. pkg/workflow/push_to_pull_request_branch.go (workflow:push_to_pull_request_branch)

   • Added logging for job building process
   • Added logging for GitHub App token minting
   • Added logging for configuration parsing

2. pkg/workflow/schedule_preprocessing.go (workflow:schedule_preprocessing)

   • Added logging for schedule preprocessing entry
   • Added logging for shorthand schedule conversion
   • Added logging for schedule item processing with count

3. pkg/workflow/tool_description_enhancer.go (workflow:tool_description_enhancer)

   • Added logging for tool description enhancement entry
   • Added logging when no constraints are found
   • Added logging with constraint count when constraints are added

4. pkg/workflow/engine_firewall_support.go (workflow:engine_firewall_support)

   • Added logging for network support check entry with engine and strict mode
   • Added logging when no restrictions are defined
   • Added logging for engine firewall support status
   • Added logging for unsupported firewall warnings

5. pkg/parser/ansi_strip.go (parser:ansi_strip)

   • Added logging with log.Enabled() check for ANSI stripping entry
   • Added logging with statistics (input/output length, escape sequences)

Guidelines Followed

• ✅ Maximum 5 files modified
• ✅ No test files modified
• ✅ Logger declarations use correct naming convention (pkg:filename)
• ✅ Logger arguments have no side effects
• ✅ Logging messages are meaningful and helpful for debugging
• ✅ Used log.Enabled() check for expensive debug operations (parser/ansi_strip.go)
• ✅ Import statements properly formatted
• ✅ Changes validated with make build (no compilation errors)
• ✅ Workflow compilation tested with DEBUG=* ./gh-aw compile dev

Test Plan

• Build succeeded: make build completes without errors
• Debug logging works: DEBUG=* ./gh-aw compile dev shows log output
• No test files were modified
• Logger naming follows convention: pkg:filename

🤖 Generated with Claude Code

Co-Authored-By: Claude Sonnet 4.5 (noreply@anthropic.com)

AI generated by Go Logger Enhancement