Repository documentation first
Generate `.SourceSageAssets/Repository_summary.md` as a structured documentation artifact with project structure, stats, Git context, and per-file excerpts.
Analyze a repository, merge ignore rules, collect Git context, and emit a structured Markdown documentation artifact that assistants can consume immediately.
SourceSage is built for the moment before an assistant can help effectively. It gives an LLM a structured, repo-shaped documentation artifact instead of an opaque directory tree.