README, CHANGELOG (under the untagged 0.10.1), CLAUDE.md and the round's
report. The numbers are the census's, not a summary of them.
- 9 714 image rows over 18 403 files and 67 PDFs, two pinned trees: exactly
35 rows moved, 9 321 of 9 321 JPEG and PNG rows byte-identical.
- The 16 the round did not go looking for: JPEG 2000 objects out of PDF
streams, also unreadable by a model, with no stdlib route to convert them.
They become `asset_not_viewable` -- 16 pictures lost from a bundle, 16
statements gained that a picture stood there. Stated in the README, the
CHANGELOG, CLAUDE.md and the report rather than left in a total.
- The accounting gate: R761 0 -> 19 claimed-and-not-found when the conversion
landed, 0 again after the judge learned its second route; row 6 90 of 111
-> 110 of 111. The gate's verdict is the same `RED: rows 2, 3, 6` as before
the round, with row 3's numbers identical.
- `<!-- asset-viewable-media-types: ... -->` is pinned to
`assets.VIEWABLE_MEDIA_TYPES` by a test, compared as a whole set: a README
naming three of four would pass every containment check and tell a consumer
that a format is refused when it is carried.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Chosen: a stdlib BMP reader, because `read_image` is on the CORE path and an
asset's name is its content digest. Measured first, as the order requires:
Pillow 12.3.0 IS in this tree (transitively under `pdfplumber`) and it DOES
decode RLE8 correctly -- a hand-written stdlib decoder and Pillow agree on
19 of 19 of R761's real files, RGB per pixel. So the choice does not rest on
capability. It rests on two properties of this package: `.html` and `.xml`
carry images with no `[extract]` extra installed, so a Pillow converter
either makes a core path depend on an optional binary wheel or buys the
second runtime dependency; and encoding through an installed library would
make a bundle's identity move with that library's version, which is the
property 0.10.0 felled page rasterisation over and `encode_png`'s docstring
already defends. Pillow keeps the job it is good for: the INDEPENDENT decoder
in the tests, on neither side of the conversion.
The defect, measured over the frozen R761 delivery's `assets/`, denominator
50: 29 JPEG, 2 PNG and 19 RLE8 BMP. The 19 are byte-correct files nothing
reads, so 19 figures were present and invisible while `images: N` reported
that they had arrived.
- `VIEWABLE_MEDIA_TYPES` is tested against every asset's SNIFFED type, so it
is a property and not a list of formats we met. WebP is on it and `sniff`
does not recognise one; the limit is stated, not implied.
- `bmp_to_png`: 8-bit uncompressed, 8-bit RLE8, 24-bit uncompressed. All five
RLE8 opcodes. 19 of 19 real files convert with RGB identical to Pillow's
decoding of the source, 2 366 365 pixels compared.
- `asset_not_viewable` and `asset_bmp_unsupported`, both published, both
leaving the concept's "not carried" line.
- Traceability on the pointer's second line, where the rest of the asset
metadata already lives: original media type, original sha256 in full, new
sha256 in full. A converted asset is ONE asset.
- The ceiling is paid on the DECLARATION before a row is allocated, and an
RLE run is one clipped slice -- painting pixel by pixel leaves the memory
bounded and the CPU unbounded.
Two repairs the change forced, each measured rather than assumed:
- `tests/test_assets.py`'s "dimensions absent is absent" used a TIFF, which
is now refused before `read_image` returns. The property still has a
reachable case -- a JPEG whose frame header never arrives -- and uses it.
- `asset_holds` in the accounting gate proved a carry by hashing the SOURCE
file, which a converted image's bundle cannot satisfy. It now also reads
the two digests the bundle states and HASHES THE ASSET ITSELF, so a bundle
claiming a conversion it did not perform still fails.
`tools/okf_asset_census.py` is the committed instrument for the
known-positive: one row per image, from two pinned trees. It was caught by
the rule it serves -- its first version handed `_pdf_images` the wrong page
object and reported 0 images over 67 PDFs with exit 0. The attribute is
asserted now and a known-positive runs before the sweep.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
