[teamleaderleo]

Carry of #27877 (#27877), preserving its purpose: “ios: New Message to one agent sends its images.”

This carry merges current feat-cmux-next. Original change and authorship are preserved.

No capture: iOS agent-message attachment behavior; no screenshot available from this lane.

Agent session: agent session

[github-actions]

cmux status _{(one comment, edited in place; each line is updated by the job that owns it)}

Review e78140a: HQ feed card · gallery before/after runs · checks

App of this head (app.zip, kept 1 day)

gh workflow run reload-build.yml -R manaflow-ai/cmux --ref feat-cmux-next -f tag=pr28212 -f ref=lane/carry-27877-ios -f platform=macos -f backend_mode=local

Not verified: macOS jobs did not run: compile and app tests were skipped on f9cb294b8f; ci-status is green without them.

CI passes on f9cb294b8f (run 41175388722 attempt 1).
macOS jobs did not run: compile and app tests were skipped: Fast static checks skipped (the macos job needs both to succeed). Re-run CI once they pass, before merging.

Written by scripts/ci/classify_failures.py (ci-failure-attribution.yml); signatures are its SIGNATURES table. A machine verdict is the runner's fault, not this PR's; yours means the failing file is one this PR changes, also red on main that main's latest full suite fails the same way, seen on other PRs that it failed on another pull request's run lately.

Shipped in:

• cmux NEXT nightly 1.0.0-nightly.4117757429001 (cbd1fc5db2)
• cmux NEXT nightly 1.0.0-nightly.4117797037301 (c9ae20d5c2)
• cmux NEXT nightly 1.0.0-nightly.4117948839501 (e43764d3e1)
• cmux NEXT nightly 1.0.0-nightly.4118042477101 (133d5a9bd7)
• cmux NEXT nightly 1.0.0-nightly.4118089936901 (7975c7a9e0)
• cmux NEXT nightly 1.0.0-nightly.4118163201202 (05730c30a0)
• cmux NEXT nightly 1.0.0-nightly.4118400110201 (c904112cd1)

[teamleaderleo]

Review (codex-review-box/gpt-6-astra high, lane-place): BLOCK at 2ee7d5c

BLOCK

1. [P2] cmux-next-ios/CmuxMobileKit/Sources/CmuxMobileChief/ChiefCompose.swift:208 forwards unsupported image bytes unchanged. AgentAttachment.imageMIMEType only recognizes PNG, JPEG, GIF, and WebP, so forwarded HEIC/TIFF images become file/resource-link attachments instead of ACP image blocks. Normalize unsupported formats to JPEG before creating the attachment.

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[blacksmith-sh]

Found 4 test failures on Blacksmith runners:

Failures

Test	View Logs
main.DeveloperIdAppTests.test_download_prints_the_active_profile_only/ test_download_prints_the_active_profile_only	View Logs
stubs: /System/Library/Frameworks/Security.framework/Versions/A/Security has no stub/ Security has no stub	View Logs
stubs: CoreFoundation.tbd: install-name /System/Library/Frameworks/ CoreFoundation.framework/Versions/A/CoreFoundation, missing 1: ['_CFRetain']/ CoreFoundation, missing 1: ['_CFRetain']	View Logs
stubs: CoreFoundation.tbd: install-name /System/Library/Frameworks/ CoreFoundation.framework/Versions/A/CoreFoundation, missing 1: ['_log2']/ CoreFoundation, missing 1: ['_log2']	View Logs

^{Need help on this PR? Tag @codesmith-bot with what you need.}

[teamleaderleo]

Review (codex-review-box/gpt-6-astra high, lane-place): BLOCK at 0312d57

BLOCK

1. cmux-next-ios/CmuxMobileKit/Tests/CmuxMobileChiefTests/ChiefTests.swift:713 — The normalization test uses a 13-byte fake JPEG, so UIImage(data:) returns nil and the conversion branch in ChiefCompose.swift:205 is never exercised. The assertions pass only because the JPEG signature is preserved; this does not verify that a valid HEIC/unsupported image is converted to JPEG, leaving the PR’s main fix untested.

[teamleaderleo]

Review (independent Codex gpt-6.1-sol, high, via the review router): BLOCK at df9a571

[P2] cmux-next-ios/CmuxMobileKit/Sources/CmuxMobileChief/ChiefCompose.swift:204 - Image support is decided from the declared MIME instead of the actual bytes. Mislabeled or unsupported images can bypass conversion, receive a .jpg name, then be uploaded as image/jpeg resources that agents cannot decode. Fix by detecting the encoded bytes first and rejecting or preserving the correct MIME when conversion fails.

VERDICT: BLOCK at df9a571

[teamleaderleo]

Review (codex-review-box/gpt-6-astra high, lane-place): BLOCK at df9a571

BLOCK

1. [P2] Detect unsupported formats from the bytes — cmux-next-ios/CmuxMobileKit/Sources/CmuxMobileChief/ChiefCompose.swift:204–205. Forward assigns "image/jpeg" to all local image data, including HEIC (ConversationComposeViewController.swift:64). Such images bypass conversion here, receive a .jpg filename, and become file resource links instead of image prompt blocks because imageMIMEType remains nil. Use attachment.imageMIMEType == nil to trigger conversion. The added test misses this case: its fixture contains only a truncated JPEG header, so decoding fails and no conversion occurs.

[teamleaderleo]

Review (codex gpt-6-astra high, next-review): SHIP at e78140a

No blocking findings.

The format detection, JPEG conversion, and file fallback are consistent with the attachment API. iOS tests were not run in this read-only environment.

[cmux-bot]

cmux-bot approves e78140a: an independent review passed this exact head (next-review receipt by teamleaderleo). A push needs a new review; a later BLOCK at this head dismisses this approval.

[teamleaderleo]

Chief-area awareness: #28212 now includes the current feat-cmux-next base merge at f9cb294. Please review the CmuxMobileChief changes at this exact head; azooz2003-bit is requested as the area reviewer.

[teamleaderleo]

Review (independent Codex gpt-6-astra high, router-review): SHIP at f9cb294

No blocking findings. Static review confirms byte-based attachment detection, JPEG conversion for unsupported decodable formats, and file fallback for undecodable data. Swift validation was unavailable in the review box; fleet validation is running separately.