[wuli666]

Summary

HEIC/HEIF photos can now be imported into the canvas and reused as ordered references for MiniMax-H3-Image and MiniMax-H3-Image-Highspeed.

• Retain original files and generate correctly oriented browser previews through shared media services.
• Preserve original bytes through downloads, publication, cross-project paste and canvas archive round trips.
• Apply the same validation to UI and Agent command sources, including mixed-format reference ordering, existing model limits and bilingual rejection messages.
• Add real HEVC-encoded fixtures, regression coverage and Chinese/English user documentation.

Linked issue

• Fixes [feat] canvas: Support HEIC and HEIF imports for MiniMax-H3-Image editing #282

Labels

• Applicable type: and area: labels applied.

Test plan

Local validation completed for this patch:

• 167 focused Python tests and 766 frontend tests passed.
• TypeScript/Vite build, i18n, browser manifest/locale, import boundaries and generated contract checks passed.
• Browser HEIC/HEIF checks passed: upload, mixed PNG/JPEG/WebP drop, orientation, reload, corrupt/oversized bilingual rejection, original downloads, archive round trips, publication and cross-project paste fallback.
• Structured editor browser regressions passed.
• DeepSeek review through pi completed; the identified image-sequence admission issue was fixed and reviewed again without a remaining blocker.

CI: repository PR and release checks; results will be reported by GitHub Actions.

Evidence that it works

The committed HEIF browser regression verifies actual oriented pixels, persisted assets and original bytes, not just visible node creation. Reproduction commands and scope are in the validation guide.

• Browser screenshots are saved locally as test-results/heif/zh-CN.png and test-results/heif/en-US.png; they are not attached to this PR.

Provider verification

• No live MiniMax requests were made.
• Browser model submissions used fixture results. Python tests exercised the real adapter against mocked HTTP through UI and Agent command sources.
• Live MiniMax editing, model quality, a live Agent conversation, camera HDR profiles and installation on other platforms remain unverified.

Bilingual UI

• Chinese and English errors and user documentation are included; both display languages were inspected and npm run check:i18n passed.