# Phase 4 Summary

**Status:** Complete
**Completed:** 2026-04-26

## Delivered

- Added `internal/progression` for readiness projection and next challenge
  selection.
- Added role readiness map calculation from learner memory evidence.
- Added deterministic challenge ladder mapping.
- Added evidence-backed rewards and boss-question unlocks.
- Added HTTP endpoints:
  - `GET /api/v1/learners/{userID}/readiness-map`
  - `GET /api/v1/learners/{userID}/next-challenge`
- Added progression unit tests and HTTP flow coverage.

## Verification

```powershell
gofmt -w cmd internal
go test ./...
openspec validate bootstrap-job-tutor-platform --strict
```

Additional smoke check:

- Diagnostic create/answer followed by readiness-map and next-challenge reads
  returned readiness `75`, one concept, and a typed challenge.

## Deferred

- Frontend readiness visualization.
- Persistent campaign and streak state.
- Multi-concept cluster graph beyond simple stable-count boss unlock.