docs(phase970): roadmap, release notes, and testing docs for v0.8.937

Mark Phase 970 complete in PLATFORM_ROADMAP, add release notes and
AUTOMATED_TESTING/PRODUCTION_MESH/MESH_STABILITY/MODULES updates for
stability e2e validate smoke harness.

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

release_notes/RELEASE_v0.8.937.md

@@ -0,0 +1,39 @@
+# Release v0.8.937 — Phase 970: Guild Mesh Stability E2E Validate Smoke Harness
+
+**Date:** 2026-06-05
+**Type:** Non-breaking refactor — Guild mesh production hardening
+
+## Summary
+
+Phase 970 adds an end-to-end validate harness for guild mesh stability stats field keys
+and builder alignment (`guild-mesh-stability-validate-e2e.js`). The validate chain
+confirms `listMeshStabilityStatsFieldKeys` matches the canonical registry and that
+`buildMeshStabilityStatsSnapshot` produces all 29 keys. Zero externally visible behavior changes.
+
+## New Module
+
+### `pearcord-platform/guild-mesh-stability-validate-e2e`
+
+Exports:
+
+- **Validators**: `validateMeshStabilityStatsFieldKeyAlignment`, `validateMeshStabilityStatsBuilderAlignment`
+- **Runner**: `runGuildMeshStabilityValidateE2e`
+
+## Agentctl Journey
+
+| Journey | Role |
+|---------|------|
+| `runGuildMeshStabilityValidateE2eJourney` | Runs validate chain + live `getMeshStabilityStats` |
+
+## Test Coverage
+
+- `smoke-guild-mesh-stability-validate-e2e.cjs` — validate chain unit smoke
+- `smoke-phase970-boot-gate.cjs` — structural verification + version check (0.8.937)
+- `smoke-agentctl-guild-mesh-stability-validate-e2e-journey-stub.cjs` — agentctl integration stub
+- `test:mesh-stability-stats` — extended with validate e2e chain assertion
+- `test:gossip-rpc-pull-unit` — extended with validate e2e runner assertion
+- `test:ci-phase970` — full CI bundle
+
+## Version
+
+`0.8.936` → `0.8.937`