# Phase 59: State Machine & Field Registry - Verification

**Status:** passed
**Date:** 2026-05-09

## Verification Results

| # | Requirement | Check | Result |
|---|-------------|-------|--------|
| 1 | STAT-01 | PdfStatus, OcrStatus, Lifecycle enums in paperforge/core/state.py with str values | PASS |
| 2 | STAT-02 | ALLOWED_TRANSITIONS table with check_ocr/check_lifecycle validators | PASS |
| 3 | STAT-03 | paperforge/schema/field_registry.yaml — 3 owners, 44 fields, loader functions | PASS |
| 4 | STAT-04 | Doctor checks field completeness against registry (MISSING_REQUIRED → fail) | PASS |
| 5 | STAT-05 | Unknown fields → DRIFT warning; missing optional → info | PASS |

## Files Created/Modified
- **Created:** `paperforge/core/state.py`, `paperforge/schema/__init__.py`, `paperforge/schema/field_registry.yaml`, `paperforge/doctor/__init__.py`, `paperforge/doctor/field_validator.py`, `tests/unit/core/test_state.py`, `tests/unit/schema/__init__.py`, `tests/unit/schema/test_field_registry.py`, `tests/unit/doctor/__init__.py`, `tests/unit/doctor/test_field_validator.py`
- **Modified:** `paperforge/worker/asset_state.py`, `paperforge/worker/status.py`

## Test Results
- 39 state machine tests passing
- 11 field registry tests passing
- 7 doctor validator tests passing
- 173 total unit tests passing
