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fix(analysis): cap decoded pixels on the vision backend too

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The vision prep pass decoded pages with bare `image::load_from_memory`,
which applies no allocation bound. `max_pixels` only downscales after a
full decode, so a tiny WebP/JPEG header declaring huge dimensions could
OOM the blocking worker — the same decompression-bomb the OCR backend
already guards against. Manga pages are commonly WebP/JPEG, where the
format's own self-limits are weaker than PNG's.

Route the decode through `decode_within`, applying an `image::Limits`
alloc cap sized from the shared `ocr_max_decode_pixels`
(ANALYSIS_OCR_MAX_DECODE_PIXELS). Add real-WebP bomb coverage asserting
both the helper and the end-to-end Undecodable fallback.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
MechaCat02
2026-07-03 21:13:27 +02:00
parent 3a9e7ca2da
commit a141d65db1
4 changed files with 63 additions and 5 deletions
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backend/Cargo.lock generated
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@@ -1558,7 +1558,7 @@ checksum = "c41e0c4fef86961ac6d6f8a82609f55f31b05e4fce149ac5710e439df7619ba4"
[[package]]
name = "mangalord"
version = "0.93.6"
version = "0.93.7"
dependencies = [
"anyhow",
"argon2",