# Phase 57: Contract Layer - Verification

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

## Verification Results

| # | Requirement | Check | Result |
|---|-------------|-------|--------|
| 1 | CTRT-01 | PFResult/PFError dataclasses in paperforge/core/result.py with to_json() round-trip | PASS |
| 2 | CTRT-02 | ErrorCode enum in paperforge/core/errors.py — 8 members, centralised | PASS |
| 3 | CTRT-03 | status --json returns PFResult format | PASS |
| 4 | CTRT-04 | doctor --json returns PFResult format with checklist data | PASS |
| 5 | CTRT-05 | sync --json returns PFResult format with counts | PASS |
| 6 | CTRT-06 | ocr --diagnose --json returns PFResult format with queue status | PASS |
| 7 | CTRT-07 | Plugin reads dashboard via paperforge dashboard --json with fallback | PASS |
| 8 | CTRT-08 | dashboard --json returns stable UI contract with stats + permissions | PASS |

## Files Created/Modified
- **Created:** `paperforge/core/__init__.py`, `paperforge/core/errors.py`, `paperforge/core/result.py`, `paperforge/commands/dashboard.py`, `tests/unit/core/test_errors.py`, `tests/unit/core/test_result.py`, `tests/unit/__init__.py`, `tests/unit/core/__init__.py`
- **Modified:** `paperforge/worker/status.py`, `paperforge/cli.py`, `paperforge/worker/sync.py`, `paperforge/commands/sync.py`, `paperforge/commands/ocr.py`, `paperforge/plugin/main.js`, `paperforge/commands/__init__.py`

## Test Results
- 13 core contract tests passing
- All imports verified
