Phase 954: export mesh registry validate journey stub (v0.8.921)

Add runExportMeshRegistryValidateJourney() headless helper delegating to
platform validate-e2e chain. Non-breaking; no RPC or UI behavior change.

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

README.md

@@ -275,6 +275,8 @@ Enable autonomous agents (and developers) to drive Pearcord like a real user wit
 
 Both modes use **`pearcord-ui-flow` `dispatchUiMessage`** — the same handler as `apps/pearcord/index.js`.
 
+**v0.8.921 (Phase 954):** Headless `runExportMeshRegistryValidateJourney()` — calls `runExportMeshFetchRegistryValidateE2e()` for export mesh registry alignment + coverage stub. Smoke: `npm run test:agentctl-export-mesh-journey-stub`.
+
 **v0.8.610 (Phase 638):** Headless `runGuildSyncDiagnosticsJourney(guildId)` — refresh health counts, `getGuildSyncHealth`, `exportGuildSyncDiagnostics` (discovery join debugging). Smoke: `npm run test:agentctl-guild-sync-diagnostics`.
 
 **v0.8.611 (Phase 639):** Headless `runSettingsMeshHealthJourney(guildId)` — `syncSettingsMesh`, `getGuildSyncHealth`, `view.settingsMeshStats`. Smoke: `npm run test:agentctl-settings-mesh-health`. Bundle: `npm run test:phase639-settings-mesh`.

headless.js

@@ -1742,6 +1742,15 @@ class HeadlessSession {
     return { health, diagnostics }
   }
 
+  /** Journey stub: export mesh registry validate e2e (Phase 954). */
+  async runExportMeshRegistryValidateJourney () {
+    if (!this.platform) throw new Error('headless not started')
+    const { runExportMeshFetchRegistryValidateE2e } = require('pearcord-platform/gossip-rpc-export-mesh-registry-validate-e2e')
+    const result = runExportMeshFetchRegistryValidateE2e()
+    await this.refreshView()
+    return result
+  }
+
   /** Journey: settings mesh health gossip + cross-device reconcile. */
   async runSettingsMeshHealthJourney (guildId) {
     if (!this.platform) throw new Error('headless not started')