Refreshing Analysis (Incremental Update)

Keep the unwind docs and rebuild-graph.json fresh across a long migration without re-unwinding everything. The deterministic scan fingerprints every file; a refresh re-analyzes only the layers whose source actually changed and flags previously-documented items whose source changed structurally as stale.

Requires: a prior full run (so docs/unwind/.cache/meta.json baseline + layer docs + coverage/ exist). Produces: updated layer docs, refreshed coverage/, and a regenerated rebuild-graph.json with coverage: "stale" / rebuildStatus: "needs-recheck" on changed contracts.

Graceful fallback: if @unwind/core/Node/pnpm is unavailable, skip the deterministic steps and fall back to the legacy unwind:uw-analyze Refresh Mode (re-run specialists with previous docs as context).

The Process