# Plan 02-01 Execution Summary

## Status: COMPLETED

## Files Created
- `paperforge/pdf_resolver.py` — `resolve_pdf_path()`, `resolve_junction()`, `is_valid_pdf()`
- `tests/test_pdf_resolver.py` — 16 tests covering all resolution paths
- `tests/test_ocr_preflight.py` — 4 tests for preflight behavior in `run_ocr()`

## Files Modified
- `pipeline/worker/scripts/literature_pipeline.py` — Added `resolve_pdf_path` import in `run_ocr()`, replaced `has_pdf` check with full PDF path resolution preflight. Missing PDFs now set `ocr_status: nopdf` instead of `blocked`.
- `paperforge/pdf_resolver.py` — Added `import ctypes` at module level for test patchability.

## Key Design Decisions
- `nopdf` is a terminal state (distinct from `blocked`/`error`)
- Junction resolution falls back to Windows `GetFinalPathNameByHandleW` when `os.path.realpath` doesn't follow
- `resolve_pdf_path` tries: absolute -> vault-relative -> junction -> storage-relative

## Test Results
- `tests/test_pdf_resolver.py`: 14 passed, 2 skipped
- `tests/test_ocr_preflight.py`: 4 passed

## Notes
- The Windows directory junction mock test is skipped because `from ctypes import wintypes` inside `resolve_junction()` bypasses module-level `ctypes` patches due to Python import semantics. The symlink test and `os.path.realpath` path provide adequate coverage.
