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# Implementation Summary

**Session ID**: `phase24-session05-scheduler-first-run-live-progress-controls` **Completed**: 2026-06-08 **Duration**: Approx. 0.7 hours

***

## Overview

Implemented browser-safe Trend Finder scheduler status and first-run controls for the scoped `trend-finder` job. The session added safe scheduler status projection, cadence mutation handling, live run progress, first-run checklist UI, and the supporting bridge, hook, schema, fixture, and documentation updates needed to keep the browser surfaces aligned with the private local scheduler state.

***

## Deliverables

### Files Created

| File                                                                         | Purpose                                                                                 | Lines |
| ---------------------------------------------------------------------------- | --------------------------------------------------------------------------------------- | ----- |
| `scripts/lib/trend-finder-scheduler-status.ts`                               | Browser-safe scheduler status, cadence validation, and spend projection helper          | \~340 |
| `scripts/lib/trend-finder-scheduler-status-bridge.ts`                        | Loopback/token-gated GET and mutation bridge for scheduler status                       | \~260 |
| `scripts/lib/__tests__/trend-finder-scheduler-status.test.ts`                | Helper coverage for status projection, cadence validation, redaction, and config writes | \~280 |
| `scripts/lib/__tests__/trend-finder-scheduler-status-bridge.test.ts`         | Bridge coverage for auth, malformed input, write failures, and redaction                | \~240 |
| `src/extensions/trend-finder/scheduler-status.ts`                            | Browser scheduler status and progress schemas plus request helpers                      | \~260 |
| `src/extensions/trend-finder/use-scheduler-status.ts`                        | Hook for loading, mutating, polling, and revalidating scheduler status                  | \~200 |
| `src/extensions/trend-finder/components/scheduler-first-run-panel.tsx`       | First-run checklist and cadence/status controls for Trend Finder                        | \~300 |
| `src/extensions/trend-finder/components/live-run-progress.tsx`               | Live stage progress rendering using Engine Replay stage labels                          | \~240 |
| `src/extensions/trend-finder/components/__tests__/scheduler-status.test.tsx` | Schema, hook, first-run panel, cadence, and progress UI tests                           | \~280 |

### Files Modified

| File                                                           | Changes                                                                       |
| -------------------------------------------------------------- | ----------------------------------------------------------------------------- |
| `src/lib/async-trend-finder-run.ts`                            | Exposed bounded safe run status and progress snapshots                        |
| `vite.config.ts`                                               | Registered the scheduler status bridge and safe progress handling             |
| `src/extensions/trend-finder/run-control.ts`                   | Added live progress, skipped state handling, and scheduler status fallbacks   |
| `src/extensions/trend-finder/hooks/use-trend-finder-run.ts`    | Polled safe progress/status during active runs with cleanup                   |
| `src/extensions/trend-finder/components/trend-run-control.tsx` | Rendered live progress and scheduler status in the run control surface        |
| `src/extensions/trend-finder/views/sources-view.tsx`           | Added the first-run checklist near Source Setup                               |
| `src/extensions/trend-finder/views/engine-replay-view.tsx`     | Added scheduler/progress context to Engine Replay                             |
| `src/extensions/trend-finder/schema.ts`                        | Extended Trend Finder schema defaults for scheduler and progress state        |
| `src/extensions/trend-finder/view-model.ts`                    | Added scheduler and live progress view-model helpers                          |
| `src/extensions/trend-finder/fixtures.ts`                      | Added configured, skipped, failed, and active-progress fixtures               |
| `src/data/live-data.example.json`                              | Added fallback scheduler and progress data                                    |
| `docs/extensions/trend-finder-pipeline.md`                     | Documented scheduler status, cadence controls, and recurring spend projection |
| `docs/extensions/trend-finder-ui-surfaces.md`                  | Documented the first-run panel and live progress surface                      |
| `docs/extensions/trend-finder-runtime-and-provenance.md`       | Documented scheduler and progress provenance boundaries                       |

***

## Technical Decisions

1. Keep all scheduler mutations loopback-only and token-gated. The browser may see safe labels and counts, but the private config file remains the source of truth.
2. Reuse Engine Replay stage taxonomy for live progress. That avoids inventing a second pipeline model and keeps the progress surface aligned with the existing run semantics.

***

## Test Results

| Metric   | Value |
| -------- | ----- |
| Tests    | 25    |
| Passed   | 25    |
| Coverage | N/A   |

***

## Lessons Learned

1. Scheduler and run progress need additive browser contracts so the UI can degrade cleanly when stage streaming is unavailable.
2. The first-run experience works best when readiness, cadence, and run-now actions are shown together instead of split across surfaces.

***

## Future Considerations

Items for future sessions:

1. Add Signal Workbench triage state in Session 06.
2. Add static Brief export in Session 07.

***

## Session Statistics

* **Tasks**: 25 completed
* **Files Created**: 9
* **Files Modified**: 14
* **Tests Added**: 3 focused suites
* **Blockers**: 0 resolved


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