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# Implementation Summary

**Session ID**: `phase19-session06-executor-registry` **Package**: null **Completed**: 2026-06-26 **Duration**: 1 hour

***

## Overview

Session 06 added the executor registry boundary for guarded-action approvals, command-center execution runs, executor capability probes, and web executor posture surfaces. Production entries remain fail-closed unless explicitly executor-ready, while safe test entries prove the approval-to-run lifecycle.

***

## Deliverables

### Files Created

| File                                                                               | Purpose                                                                                          | Lines |
| ---------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------ | ----- |
| `apps/server/src/managers/executorRegistry.ts`                                     | Registry contracts, default capabilities, timeout, cleanup, bounded results, and repair guidance | 695   |
| `apps/server/tests/executorRegistry.test.ts`                                       | Registry ready, non-ready, timeout, failure, cleanup, rollback, and bounding coverage            | 245   |
| `apps/web/src/components/orchestration/ExecutorFamiliesPanel.tsx`                  | Product-facing executor family cards, requirements, refresh controls, and run summaries          | 163   |
| `apps/web/src/components/orchestration/ExecutorRunHistoryDrawer.tsx`               | Scoped execution-run detail drawer with bounded result metadata                                  | 121   |
| `apps/web/tests/ExecutorFamiliesPanel.test.tsx`                                    | Executor panel and drawer UI coverage for states, redaction, and focus behavior                  | 238   |
| `.spec_system/specs/phase19-session06-executor-registry/spec.md`                   | Session specification                                                                            | 249   |
| `.spec_system/specs/phase19-session06-executor-registry/tasks.md`                  | Session task checklist                                                                           | 73    |
| `.spec_system/specs/phase19-session06-executor-registry/implementation-notes.md`   | Task-by-task implementation notes                                                                | 687   |
| `.spec_system/specs/phase19-session06-executor-registry/code-review.md`            | Code review and repair report                                                                    | 106   |
| `.spec_system/specs/phase19-session06-executor-registry/security-compliance.md`    | Security and GDPR compliance report                                                              | 107   |
| `.spec_system/specs/phase19-session06-executor-registry/validation.md`             | Validation report                                                                                | 220   |
| `.spec_system/specs/phase19-session06-executor-registry/IMPLEMENTATION_SUMMARY.md` | Session completion summary                                                                       | 122   |

### Files Modified

| File                                                            | Changes                                                                                    |
| --------------------------------------------------------------- | ------------------------------------------------------------------------------------------ |
| `.spec_system/state.json`                                       | Marked Session 06 complete, cleared current session, and recorded completion history       |
| `.spec_system/PRD/phase_19/PRD_phase_19.md`                     | Updated progress to 6/16, marked Session 06 complete, and added completion notes           |
| `package.json`                                                  | Bumped root version from 0.1.153 to 0.1.154                                                |
| `package-lock.json`                                             | Synced lockfile root version to 0.1.154                                                    |
| `README.md`                                                     | Updated the version badge to 0.1.154                                                       |
| `apps/server/README_server.md`                                  | Documented registry policy, local-only boundaries, and test-only ready posture             |
| `apps/server/src/lib/commandCenterValidation.ts`                | Added executor route-id, probe, detail, stale revision, and blocked-field validation       |
| `apps/server/src/lib/orchestrationDiagnostics.ts`               | Added registry readiness and recent execution diagnostics without raw payloads             |
| `apps/server/src/managers/guardedActions.ts`                    | Routed approvals through registry execution and non-ready repair guidance                  |
| `apps/server/src/managers/orchestrationCommandCenter.ts`        | Added execution-run persistence helpers, capability updates, ordering, and bounded records |
| `apps/server/src/routes/commandCenter.ts`                       | Added executor probe and execution detail routes with compact errors                       |
| `apps/server/src/routes/guardedActions.ts`                      | Emitted paired guarded-action and command-center execution events                          |
| `apps/server/src/server.ts`                                     | Instantiated and injected the default executor registry                                    |
| `apps/server/src/ws/handlers.ts`                                | Added WebSocket approval completion and execution event behavior                           |
| `apps/server/tests/commandCenterManager.test.ts`                | Covered execution lifecycle, counts, idempotency, and ordering                             |
| `apps/server/tests/commandCenterRoutes.test.ts`                 | Covered executor probe/detail routes, aliases, conflicts, validation, and events           |
| `apps/server/tests/guardedActions.test.ts`                      | Covered ready, non-ready, stale, duplicate, bounded, and capacity approval paths           |
| `apps/server/tests/orchestrationDiagnostics.test.ts`            | Covered readiness and execution diagnostics                                                |
| `apps/server/tests/websocket.test.ts`                           | Covered paired guarded-action and execution WebSocket frames                               |
| `apps/web/README_web.md`                                        | Documented executor UI behavior and raw-output redaction boundaries                        |
| `apps/web/src/components/orchestration/CommandCenterPanes.tsx`  | Replaced generic Executors tab content with executor family cards                          |
| `apps/web/src/components/orchestration/OrchestrationDrawer.tsx` | Delegated execution selections to the scoped run-history drawer                            |
| `apps/web/src/components/orchestration/OrchestrationShell.tsx`  | Added executor capability refresh mutation wiring                                          |
| `apps/web/src/components/orchestration/OrchestrationTabs.tsx`   | Passed executor refresh controls through the tab layer                                     |
| `apps/web/src/components/orchestration/index.ts`                | Exported executor components                                                               |
| `apps/web/src/lib/commandCenterUi.ts`                           | Added executor summary, run-history, requirement, availability, and redaction helpers      |
| `apps/web/src/lib/orchestrationApi.ts`                          | Added executor probe and execution-detail API helpers                                      |
| `apps/web/tests/OrchestrationPanel.test.tsx`                    | Covered Executors tab integration                                                          |
| `apps/web/tests/commandCenterStore.test.ts`                     | Covered execution and executor event reducer behavior                                      |
| `apps/web/tests/commandCenterUi.test.ts`                        | Covered executor summaries, run-history views, and redaction                               |
| `apps/web/tests/orchestrationApi.test.ts`                       | Covered probe/detail helpers and error mapping                                             |
| `docs/api/README_api.md`                                        | Documented registry-backed approval behavior and executor routes                           |
| `docs/api/event-api-hook-contracts.md`                          | Updated REST/WebSocket reconciliation for paired execution updates                         |

***

## Technical Decisions

1. **Fail-closed production registry**: Default concrete families stay unavailable, observe-only, proposal-only, or approved-not-executing until later sessions add real adapters with audit, redaction, timeout, tests, and docs.
2. **Manager-owned run history**: Execution records stay behind `OrchestrationCommandCenterManager`, matching the current in-memory command-center state boundary.
3. **Bounded UI and event payloads**: Broad cards, events, diagnostics, and docs expose posture and bounded summaries only, not raw commands, diffs, terminal output, file contents, provider payloads, tokens, or broad paths.

***

## Test Results

| Metric   | Value               |
| -------- | ------------------- |
| Tests    | 2751                |
| Passed   | 2750                |
| Skipped  | 1                   |
| Failed   | 0                   |
| Coverage | N/A - not requested |

Additional gates passed: server typecheck, web typecheck, workspace typecheck, focused server tests, focused web tests, lint, format check, `git diff --check`, ASCII/LF validation, security review, and code review.

***

## Lessons Learned

1. Registry probe and cleanup hooks must convert exceptions into compact failed capability or execution results instead of escaping route and socket paths.
2. Guarded-action completion must fail when command-center run storage cannot create the paired history record, otherwise approval state and run history can drift.

***

## Future Considerations

Items for future sessions:

1. Session 07 should build provider diagnostics on top of the capability posture and compact diagnostics patterns established here.
2. Session 08 and later executor-family sessions should register real adapters only after adding family-specific permission, audit, redaction, timeout, rollback, tests, and documentation.
3. Terminal, container, remote, Worker, hosted, channel, mission, handoff, and subagent families should remain non-ready until their scoped sessions satisfy the same gates.

***

## Session Statistics

* **Tasks**: 22 completed
* **Files Created**: 12
* **Files Modified**: 33
* **Tests Added**: 2 new test files plus expanded focused server and web suites
* **Blockers**: 0 resolved


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