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# Implementation Summary

**Session ID**: `phase15-session01-scheduler-config-contract` **Completed**: 2026-05-31 **Duration**: 3.5 hours

***

## Overview

Implemented the Phase 15 scheduler config contract so local scheduler settings can select only reviewed job and cadence values, degrade safely when config is missing or invalid, and keep scheduler status output sanitized.

***

## Deliverables

### Files Created

| File                                                                                       | Purpose                                          | Lines |
| ------------------------------------------------------------------------------------------ | ------------------------------------------------ | ----- |
| `data/ai-os.scheduler.example.json`                                                        | Sanitized scheduler config template              | \~20  |
| `scripts/lib/scheduler/config.ts`                                                          | Scheduler config parsing and validation contract | \~180 |
| `scripts/lib/__tests__/scheduler-config.test.ts`                                           | Config parser and validator coverage             | \~220 |
| `.spec_system/specs/phase15-session01-scheduler-config-contract/validation.md`             | Validation record for session closeout           | \~20  |
| `.spec_system/specs/phase15-session01-scheduler-config-contract/IMPLEMENTATION_SUMMARY.md` | Session closeout summary                         | \~80  |

### Files Modified

| File                                                                     | Changes                                                     |
| ------------------------------------------------------------------------ | ----------------------------------------------------------- |
| `.gitignore`                                                             | Ignored private scheduler config                            |
| `data/README_data.md`                                                    | Documented template/private config pairing                  |
| `scripts/lib/scheduler/types.ts`                                         | Added config-aware projection types                         |
| `scripts/lib/scheduler/index.ts`                                         | Exported config helpers                                     |
| `scripts/lib/scheduler/operator-status.ts`                               | Projected effective config and sanitized warnings           |
| `scripts/lib/__tests__/scheduler-operator-status.test.ts`                | Added config-aware status coverage                          |
| `scripts/lib/__tests__/scheduler-status-cli.test.ts`                     | Added CLI redaction coverage                                |
| `docs/runbooks/scheduled-aggregate.md`                                   | Documented scheduler config path and behavior               |
| `docs/runbooks/ai-os-dream.md`                                           | Documented Dream timer intent boundary                      |
| `.env.local.example`                                                     | Redirected scheduler settings guidance to `data/`           |
| `scripts/lib/scheduler/registry.ts`                                      | Preserved reviewed registry contract for config validation  |
| `scripts/lib/__tests__/scheduler-registry.test.ts`                       | Extended registry coverage for new contract behavior        |
| `scripts/lib/aggregate-live-data-write.ts`                               | Added merge-boundary and lock support for future split jobs |
| `scripts/lib/scheduler/locks.ts`                                         | Updated scheduler lock behavior                             |
| `scripts/lib/__tests__/aggregate-live-data-write.test.ts`                | Added scoped write coverage                                 |
| `scripts/scheduler-status.ts`                                            | Updated CLI status output wiring                            |
| `docs/ongoing-projects/scheduler-config-and-aggregate-split-plan.md`     | Folded the plan into the phase record                       |
| `.spec_system/state.json`                                                | Marked the session complete and advanced phase tracking     |
| `.spec_system/PRD/PRD.md`                                                | Marked Phase 15 as in progress                              |
| `.spec_system/PRD/phase_15/PRD_phase_15.md`                              | Updated phase progress and session completion tracking      |
| `.spec_system/specs/phase15-session01-scheduler-config-contract/spec.md` | Marked the session complete                                 |
| `README.md`                                                              | Bumped the documented project version                       |
| `package.json`                                                           | Bumped the package version                                  |

***

## Technical Decisions

1. **Registry-as-contract**: Local config is validated only against reviewed registry job and cadence IDs so private settings cannot introduce arbitrary commands or unsafe timers.
2. **Typed degradation**: Invalid config returns a sanitized warning state instead of crashing status output, preserving the CLI as a safe operator surface.

***

## Test Results

| Metric   | Value        |
| -------- | ------------ |
| Tests    | 2710         |
| Passed   | 2710         |
| Coverage | Not measured |

***

## Lessons Learned

1. Session closeout is easier when validation artifacts are written as part of the same pass as the PRD/state update.
2. Config validation needs to stay narrow so future scheduler jobs do not leak into the current contract.

***

## Future Considerations

Items for future sessions:

1. Add the scoped `agent-aggregate` and Trend Finder scheduler jobs once the merge-boundary work lands.
2. Reconcile timer unit rendering after the split jobs are stable.

***

## Session Statistics

* **Tasks**: 12 completed
* **Files Created**: 5
* **Files Modified**: 21
* **Tests Added**: 3
* **Blockers**: 0 resolved


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