Add dedicated logging tools (python functions) for tracking progress and for bailing out

[aaronsteers]

These don't make sense as MCP tools, but extremely helpful as python-based function tools:

• log_progress_report
• log_issue_report
• mark_project_success
• mark_project_fail

The first two improve visibility during the build.

The last two allow us to do an infinite loop unless and until one of those tools is explicitly called.