docs: REUSE.md introduced — reuse map (hub+website+scripts+manifests) + reuse_refs_check.py gate + consolidated cross-repo REPORT

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PSK5g6qYLknKj8u3QAFEr6

hub/CHANGELOG.md

@@ -1,5 +1,15 @@
 # Felhom Hub — Changelog
 
+## docs — REUSE.md introduced (2026-07-03)
+
+Cross-repo reuse-map rollout (docs-only, no code change, no version bump). New `REUSE.md` at the
+repo root covering hub + website + scripts + manifests: canonical helpers (34 rows), patterns
+(monitor checker, website page, gate script, GitOps deploy), dangerous lookalikes (legacy /notify
+trio, severity-`critical` coercion at handleEvent ingest, inline stringData secrets, kubectl-apply
+drift…), seams, extension points, and observed duplication (5 clusters, NOT fixed). New
+`scripts/reuse_refs_check.py` machine-checks every cited path in all four repos' REUSE.md files.
+CLAUDE.md gains the REUSE.md pointer + same-commit maintenance rule.
+
 ## v0.30.1 — status badge no-wrap (2026-07-02)
 
 Found in the authenticated D4 validation pass: multi-word status tags (PENDING in a narrow