docs: add ROADMAP + STATE snapshot, refresh CLAUDE.md dev state (M0)

Record the 2026-07-14 development snapshot and the roadmap to a deployable
rotation system. Update CLAUDE.md "Where development is" — the stale entry
claimed zero rotation drivers; reality is 22 drivers + a wired Mode A execute
spine (8 LIVE-VM / 14 MOCK-ONLY). Gitignore the incredigo-map.html build
artifact and the local rotation runbook.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitignore

@@ -1,6 +1,7 @@
 # build output
 /credrot
 /dist/
+/incredigo-map.html
 
 # never commit secrets or backup bundles (any sealer: age / hmac / openssl)
 *.credrot.enc
@@ -11,6 +12,7 @@
 
 # local-only design docs (kept on disk, never pushed upstream)
 docs/ROTATION.md
+docs/ROTATION-REAL-CRED-RUNBOOK.md
 
 # editor / OS
 *.swp