Open Olympus ORI and Sinar STI RAW files

[roprgm]

Change

.ori (Olympus and OM System) and .sti (Sinar) files now open as RAW. LibRaw already decodes both; only OpenLight's extension list turned them away with "Unsupported image".

Verification

• bun run check, bun run build, and bun run test pass.
• Opened real samples from raw.pixls.us in the app: .ori from the OM-1, OM-1 II, OM-5, OM-5 II, E-M1 II, E-M1 III, and E-M5 II, and .sti from a Sinarback eVolution 75 all render. OM-3 .ori files still fail, because LibRaw has no color matrix for that camera; raw-webgpu will fix that.

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Summary by CodeRabbit

• New Features
  • Added support for .ori and .sti RAW image files. These extensions are now recognized and handled by the existing RAW image decoder, alongside the other supported RAW formats. Existing RAW file support is unchanged. This expands the range of RAW file extensions the app can process.

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Project	Deployment	Actions	Updated
openlight	Ready	Preview	Oct 13, 2026 9:55pm UTC

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• src/core/image/decode/index.ts

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📝 Walkthrough

The RAW decoder’s recognized extensions now include ori and sti. Files with these extensions are routed through the existing RAW decoder.

Changes: RAW extension recognition

Layer / File(s)	Summary
Add RAW extensions src/core/image/decode/index.ts	The RAW extension list now includes ori and sti.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~3 minutes

Change: Bug fix

Merge Risk: ⚪ Minimal · up to 2ba93

This change enables two additional RAW extensions, and no concrete merge-blocking issue is identified.

Pre-merge checks | 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description check		The description includes both required sections. It explains the .ori and .sti changes, the prior unsupported-image behavior, verification commands, tested camera samples, and the known OM-3 limit…
Title check		The title clearly and concisely identifies the primary change: support for Olympus ORI and Sinar STI RAW files.
Docstring Coverage		No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 1…
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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