# bf-644ci: Verify no-mapping.pdf unmapped glyph documentation

## Task
Identify and catalog unmapped glyphs in no-mapping.pdf fixture

## Verification Summary

Verified that existing documentation at `tests/fixtures/no-mapping.md` is comprehensive and accurate.

### Unmapped Glyphs Confirmed

The fixture contains exactly 3 unmapped glyphs:

1. **`/g001` (CID 0)**
   - Custom glyph name not in Adobe Glyph List (AGL)
   - Font `/CustomNoMap` is not a standard Adobe font
   - No ToUnicode CMap present
   - Should recover as "A" via Level 4 glyph shape recognition

2. **`/g002` (CID 1)**
   - Custom glyph name not in Adobe Glyph List (AGL)
   - Font `/CustomNoMap` is not a standard Adobe font
   - No ToUnicode CMap present
   - Should recover as "B" via Level 4 glyph shape recognition

3. **`/g003` (CID 2)**
   - Custom glyph name not in Adobe Glyph List (AGL)
   - Font `/CustomNoMap` is not a standard Adobe font
   - No ToUnicode CMap present
   - Should recover as "C" via Level 4 glyph shape recognition

### Verification Methods

1. **PDF Structure Verification:**
   - `pdfinfo`: Confirms PDF is valid (1 page, 660 bytes, PDF 1.4)
   - `pdffonts`: Shows CustomNoMap Type 1 font with Custom encoding, no Unicode mapping
   - Direct PDF inspection: Confirmed encoding array `/Differences [0 /g001 /g002 /g003]`
   - Content stream verification: Confirmed glyph sequence `<g001><g002><g003> Tj`

2. **Documentation Review:**
   - Existing documentation at `tests/fixtures/no-mapping.md` is comprehensive
   - Includes fixture overview, unmapped glyph details, font configuration, content stream
   - Explains recovery strategy and why fixture exists
   - All acceptance criteria met

### Acceptance Criteria Status

- ✅ Documentation file exists at tests/fixtures/no-mapping.md
- ✅ Lists 3 specific unmapped glyphs by CID/glyph name
- ✅ Explains why each glyph is unmapped

### Conclusion

The documentation was already created in a previous bead (bf-68f9i) and is accurate and complete. No additional work required.

### Related Files

- `tests/fixtures/no-mapping.md` - Comprehensive documentation (already exists)
- `tests/fixtures/encoding/no-mapping.pdf` - Test fixture
- `tests/fixtures/encoding/no-mapping.txt` - Ground truth: "ABC"
- `tests/fixtures/generate_encoding_fixtures.rs` - Fixture generator