CI hardening + Pillow 12.3.0 security bump - #3
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- tests.yml: add permissions: contents: read, pin actions to SHAs - release.yml: pin actions to SHAs (already scoped contents: write) - requirements.txt: Pillow 11.3.0 -> 12.3.0, patching a batch of high-severity advisories (heap OOB writes, decompression-bomb DoS) affecting all Pillow < 12.3.0; numpy stays pinned at 2.2.6 Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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CI hardening + Pillow 12.3.0 security bump
Second-phase security work (the first PR carried the code fixes).
Pillow 11.3.0 → 12.3.0
Dependabot flagged ~15 open advisories against Pillow < 12.3.0 — heap out-of-bounds writes and decompression-bomb DoS bypasses, relevant since the viewer decodes untrusted image data.
numpystays pinned at 2.2.6. The CI matrix (3.10/3.12/3.13) already satisfies Pillow 12's Python floor, so no matrix change was needed.Workflow hardening
tests.yml:permissions: contents: read; actions pinned to commit SHAs.release.yml: actions pinned to SHAs (already correctly scopedcontents: write).Verified locally: full suite 202/202 under Pillow 12.3.0. This supersedes Dependabot #2, which will auto-close on merge.