docs+catalog: bitcoin multi-version rollout handoff + reproducible generator

- generate-app-catalog.sh: VERSIONS map now lists the full Knots set
  (29.3.knots20260508/20260507/20260210 + 29.2.knots20251110) and Core
  (adds 29.2 + a `latest` entry → newest); generator forces top-level
  `version` == the default entry's version (the 169ff2e2 invariant) so
  regeneration is reproducible. releases/app-catalog.json regenerated.
- docs/bitcoin-version-bulletproof-rollout.md: full handoff — root causes,
  fixes, current .228 state, the coordinated fleet-rollout steps (incl.
  :latest repoint sequencing / fleet-safety), reindex finish procedure, and
  the switch-matrix test plan.
- PRODUCTION-MASTER-PLAN.md: link the rollout doc (§6b-bis).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

docs/PRODUCTION-MASTER-PLAN.md

@@ -135,6 +135,16 @@ After the 2026-06-23 multinode test deploy (latest backend + UX frontend to .116
 3. **§6c Lifecycle perfection** (workstream F) — the comprehensive uninstall/reinstall +
    progress-UI + all-apps gate expansion below.
 
+## 6b-bis. Bitcoin multi-version bulletproofing (2026-06-29) — READY TO MERGE + DEPLOY
+
+Branch `bitcoin-version-bulletproof` (base `095a76cd`). Fixes the "switch version silently
+fails / crash-loops" class + a data-access mismatch that can corrupt a node's index. All
+code + images + catalog + frontend DONE; **.228** carries it (Knots chainstate mid-reindex
+recovery). The **coordinated fleet rollout** (OTA binary+frontend, mirror catalog publish,
+`:latest` repoint sequencing, full switch-matrix test) is the remaining work — fold it into
+the next release. **Authoritative detail + exact remaining steps + test matrix →
+`docs/bitcoin-version-bulletproof-rollout.md`.** Pairs with `docs/bitcoin-multi-version-design.md`.
+
 ## 6c. Lifecycle perfection — what "green" MISSED (workstream F, the perfection bar)
 
 **Why this exists:** the 2026-06-23 single-node gate went 5×-green but is **NOT** the