docs(phase979): production validate e2e extend + v0.8.946

Document Phase 979 production validate chain, update roadmap to
complete 979 and queue 980, module map to 24 entries, release notes.

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

release_notes/RELEASE_v0.8.946.md

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+# Release v0.8.946 — Phase 979: Guild Mesh Production Track E2E Validate Extend
+
+**Date:** 2026-06-05
+**Type:** Non-breaking refactor — Guild mesh production hardening
+
+## Summary
+
+Phase 979 extends the guild mesh production hardening track with a unified end-to-end
+validate chain that composes stability validate (Phase 970), module map alignment (Phase 976),
+regression chain snapshot (Phase 978), facade export keys (Phase 977), and agentctl matcher
+keys (Phase 975), with optional line audit.
+
+## New Module
+
+### `pearcord-platform/guild-mesh-production-validate-e2e`
+
+- `runGuildMeshProductionValidateE2e(opts)` — full production track validate chain
+- Chains `runGuildMeshStabilityValidateE2e()` + module map + regression + facade + matcher alignment
+- Optional `readFileSync` + `platformDir` for line audit pass
+
+## Module Map Update
+
+Production track module map grows to **24** entries (adds phase 979 `guild-mesh-production-validate-e2e.js`).
+
+## Test Coverage
+
+- `smoke-guild-mesh-production-validate-e2e.cjs` — validate chain + line audit smoke
+- `smoke-phase979-boot-gate.cjs` — structural verification + version check (0.8.946)
+- `smoke-agentctl-guild-mesh-production-validate-e2e-journey-stub.cjs` — agentctl integration stub
+- `test:mesh-stability-stats` — extended with production validate assertions; module map count 24
+- `test:gossip-rpc-pull-unit` — extended with production validate registry assertions
+- `test:ci-phase979` — full CI bundle
+
+## Version
+
+`0.8.945` → `0.8.946`