docs(phase977): guild mesh stability stats facade + v0.8.944

Mark Phase 977 complete (47/50). Document facade module, mixin import chain,
and updated 23-module production track map.

Co-authored-by: Cursor <[email protected]>

release_notes/RELEASE_v0.8.944.md

@@ -0,0 +1,43 @@
+# Release v0.8.944 — Phase 977: Guild Mesh Stability Stats Facade Merge + Mixin Import Chain
+
+**Date:** 2026-06-05
+**Type:** Non-breaking refactor — Guild mesh production hardening
+
+## Summary
+
+Phase 977 introduces `guild-mesh-stability-stats-facade.js` as a single import surface for
+mesh stability stats builders. The partition-heal orchestrator mixin and view mixin now
+import the facade only, without changing `getMeshStabilityStats` or view snapshot behavior.
+
+## New Module
+
+### `pearcord-platform/guild-mesh-stability-stats-facade`
+
+Re-exports 22 stability-stats builder symbols from 12 underlying `guild-mesh-*` modules:
+
+- Stats build, gossip outbox, bandwidth, sparse ACK, member page, partition heal
+- Sync health, offline recovery, topic pool, replication diagnostics
+- Multi-guild diagnostics envelope, guild sync diagnostics envelope
+- View stability field picker
+
+Registry: `listGuildMeshStabilityStatsFacadeExportKeys()`
+
+## Call-site Wiring (non-breaking)
+
+| File | Change |
+|------|--------|
+| `platform-partition-heal-orchestrator-mixin.js` | Single facade import replaces 12 direct `guild-mesh-*` requires |
+| `platform-view-mixin.js` | `pickMeshViewStabilityFields` from facade |
+
+## Test Coverage
+
+- `smoke-guild-mesh-stability-stats-facade-build.cjs` — facade re-export + mixin wire checks
+- `smoke-phase977-boot-gate.cjs` — structural verification + version check (0.8.944)
+- `smoke-agentctl-guild-mesh-stability-stats-facade-journey-stub.cjs` — agentctl integration stub
+- `test:mesh-stability-stats` — extended with facade export key assertions
+- `test:gossip-rpc-pull-unit` — extended with facade registry assertions
+- `test:ci-phase977` — full CI bundle
+
+## Version
+
+`0.8.943` → `0.8.944`