Phase 902: export mesh view snapshot + mixin pick helper + RPC import consolidation (v0.8.869)

Non-breaking refactor — pickGuildExportMeshFetchMixinMethods() eliminates duplicate
mixin builds; buildExportMeshFetchRegistryDiagnosticsSnapshot() surfaces export
mesh registry on platform RPC view; audit/digest RPC mixins import consolidated
platform-export-mesh-fetch-mixin directly. Default gossip v1 unchanged; fleet v2
cutover still deferred.

Verification: test:ci-phase902, pear run boot, pearcord.log scan.

README.md

@@ -92,6 +92,8 @@ Application facade: one `PearcordPlatform` class that wires identity, database,
 
 **Phase 822 (v0.8.789):** Triple-peer topology via `guild-mesh-topology` + `getMeshStabilityStats`. Bundle: `npm run test:ci-phase822`.
 
+**Phase 902 (v0.8.869):** Export mesh view snapshot + mixin pick helper + RPC import consolidation. Bundle: `npm run test:ci-phase902`.
+
 **Phase 901 (v0.8.868):** Export mesh registry entry split + lookup/alignment validation. Bundle: `npm run test:ci-phase901`.
 
 **Phase 900 (v0.8.867):** Export mesh registry root move + consolidated mesh fetch mixin. Bundle: `npm run test:ci-phase900`.

gossip-rpc-export-mesh-bind.js

@@ -59,9 +59,19 @@ function buildGuildExportMeshFetchMixinsFromRegistry (registry) {
   return mixins
 }
 
+/** Pick one registry entry's methods from a consolidated mixin (Phase 902). */
+function pickGuildExportMeshFetchMixinMethods (entry, mixin) {
+  return {
+    [entry.resolveWaiterMethod]: mixin[entry.resolveWaiterMethod],
+    [entry.fetchFromMeshMethod]: mixin[entry.fetchFromMeshMethod],
+    [entry.fetchOnceMethod]: mixin[entry.fetchOnceMethod]
+  }
+}
+
 module.exports = {
   buildGuildExportMeshFetchMixin,
   buildGuildExportMeshFetchMixinsFromRegistry,
+  pickGuildExportMeshFetchMixinMethods,
   buildGuildExportMeshGossipRequestBase,
   buildGuildExportMeshGossipWaitCallback
 }

gossip-rpc-export-mesh-registry-lookup.js

@@ -33,9 +33,17 @@ function buildExportMeshFetchRegistrySnapshot () {
   })
 }
 
+function buildExportMeshFetchRegistryDiagnosticsSnapshot () {
+  return {
+    exportMeshFetchRegistryKeys: listExportMeshFetchRegistryKeys(),
+    exportMeshFetchRegistrySnapshot: buildExportMeshFetchRegistrySnapshot()
+  }
+}
+
 module.exports = {
   listExportMeshFetchRegistryKeys,
   lookupExportMeshFetchRegistryEntry,
   lookupExportMeshFetchRegistryEntryByPullConfig,
-  buildExportMeshFetchRegistrySnapshot
+  buildExportMeshFetchRegistrySnapshot,
+  buildExportMeshFetchRegistryDiagnosticsSnapshot
 }

gossip-rpc-view-snapshot.js

@@ -22,11 +22,13 @@ function buildRpcWireViewSnapshot () {
 function buildGuildGossipRpcDiagnosticsSnapshot () {
   const { listGuildGossipRpcRequestMethodKeys } = require('./gossip-rpc-handler-map')
   const { buildGuildGossipRpcRegistrySnapshot } = require('./gossip-rpc-registry')
+  const { buildExportMeshFetchRegistryDiagnosticsSnapshot } = require('./gossip-rpc-export-mesh-registry-lookup')
   const methods = listGuildGossipRpcRequestMethodKeys()
   return {
     guildGossipRpcHandlerCount: methods.length,
     guildGossipRpcRequestMethods: methods,
-    ...buildGuildGossipRpcRegistrySnapshot()
+    ...buildGuildGossipRpcRegistrySnapshot(),
+    ...buildExportMeshFetchRegistryDiagnosticsSnapshot()
   }
 }
 

mixins/runtime/features/platform-audit-archive-rpc-mixin.js

@@ -2,7 +2,7 @@
 
 const { platformAuditArchiveRpcRespondersMixin } = require('./platform-audit-archive-rpc-responders-mixin')
 const { platformTargetedExportRpcPullMixin } = require('./platform-targeted-export-rpc-pull-mixin')
-const { platformAuditExportMeshFetchMixin } = require('./platform-audit-export-mesh-fetch-mixin')
+const { platformAuditExportMeshFetchMixin } = require('./platform-export-mesh-fetch-mixin')
 
 const platformAuditArchiveRpcMixin = {
   ...platformAuditArchiveRpcRespondersMixin,

mixins/runtime/features/platform-automation-digest-snapshot-rpc-mixin.js

@@ -4,7 +4,7 @@ const {
   platformAutomationDigestSnapshotRpcRespondersMixin
 } = require('./platform-automation-digest-snapshot-rpc-responders-mixin')
 const { platformTargetedExportRpcPullMixin } = require('./platform-targeted-export-rpc-pull-mixin')
-const { platformAutomationDigestMeshFetchMixin } = require('./platform-automation-digest-mesh-fetch-mixin')
+const { platformAutomationDigestMeshFetchMixin } = require('./platform-export-mesh-fetch-mixin')
 
 const platformAutomationDigestSnapshotRpcMixin = {
   ...platformAutomationDigestSnapshotRpcRespondersMixin,

mixins/runtime/features/platform-export-mesh-fetch-mixin.js

@@ -1,18 +1,20 @@
 'use strict'
 
 const {
-  buildGuildExportMeshFetchMixin,
-  buildGuildExportMeshFetchMixinsFromRegistry
+  buildGuildExportMeshFetchMixinsFromRegistry,
+  pickGuildExportMeshFetchMixinMethods
 } = require('../../../gossip-rpc-export-mesh-bind')
 const { exportMeshFetchRegistry } = require('../../../gossip-rpc-export-mesh-registry')
 
-/** Consolidated export mesh fetch mixins from registry entries (Phase 900–901). */
+/** Consolidated export mesh fetch mixins from registry entries (Phase 900–902). */
 const platformExportMeshFetchMixin = buildGuildExportMeshFetchMixinsFromRegistry(exportMeshFetchRegistry)
-const platformAuditExportMeshFetchMixin = buildGuildExportMeshFetchMixin(
-  exportMeshFetchRegistry.auditExportArchive
+const platformAuditExportMeshFetchMixin = pickGuildExportMeshFetchMixinMethods(
+  exportMeshFetchRegistry.auditExportArchive,
+  platformExportMeshFetchMixin
 )
-const platformAutomationDigestMeshFetchMixin = buildGuildExportMeshFetchMixin(
-  exportMeshFetchRegistry.automationDigestSnapshot
+const platformAutomationDigestMeshFetchMixin = pickGuildExportMeshFetchMixinMethods(
+  exportMeshFetchRegistry.automationDigestSnapshot,
+  platformExportMeshFetchMixin
 )
 
 module.exports = {