Phase 1012: guild mesh topology refresh predicate docs (v0.8.979).

Document mesh stability UI guild mesh topology light-poll refresh extract,
test:ci-phase1012 bundle, and roadmap Phase 1012 completion.

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

release_notes/RELEASE_v0.8.979.md

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+# Release v0.8.979 — Phase 1012: Mesh Stability UI Guild Mesh Topology Light-Poll Refresh
+
+**Date:** 2026-06-05
+**Type:** Non-breaking refactor — mesh stability UI chrome refresh track
+
+## Summary
+
+Phase 1012 extracts `guildMeshTopologyNeedsRefresh` from the consolidated
+refresh-predicates module into dedicated platform + UI modules. Mesh topology
+chrome refresh during light state polls is unchanged; rail hash import
+(`hashGuildMeshTopologyForView`) preserved in `mesh-stability-ui-rail-hash.js`.
+Refresh-predicates re-exports for Phase 983 backward compatibility.
+
+## New Modules
+
+### `pearcord-platform/mesh-stability-ui-guild-mesh-topology-refresh-keys.js`
+
+- 5 field keys + `evalGuildMeshTopologyNeedsRefresh()` + snapshot builder
+
+### `apps/pearcord/ui/mesh-stability-ui-guild-mesh-topology-refresh.js`
+
+- `guildMeshTopologyNeedsRefresh()` wired via `hashGuildMeshTopologyForView` from rail-hash
+
+## Test Coverage
+
+- `smoke-mesh-stability-ui-guild-mesh-topology-refresh-build.cjs` — keys + eval + app.js wire
+- `smoke-phase1012-boot-gate.cjs` — version check (0.8.979)
+- `smoke-agentctl-mesh-stability-ui-guild-mesh-topology-refresh-journey-stub.cjs` — agentctl stub
+- `test:mesh-stability-stats` / `test:gossip-rpc-pull-unit` — extended with mesh topology keys
+- `test:ci-phase1012` — full meta-bundle
+
+## Version
+
+`0.8.978` → `0.8.979`