Q136: remove rollback records that marked restores nothing performed

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/shared/ipc.ts

@@ -49,9 +49,6 @@ export const IPC_CHANNELS = {
   pickDirectory: "agentcompany:pick-directory",
   setFilePinned: "agentcompany:set-file-pinned",
   createMigrationReport: "agentcompany:create-migration-report",
-  createRollbackSnapshot: "agentcompany:create-rollback-snapshot",
-  setRollbackSnapshotActive: "agentcompany:set-rollback-snapshot-active",
-  resolveMigrationReconciliation: "agentcompany:resolve-migration-reconciliation",
   setFeatureFlag: "agentcompany:set-feature-flag",
   createComplianceExport: "agentcompany:create-compliance-export",
   createLegalHold: "agentcompany:create-legal-hold",