feat(chat): "Take photo" option in the attach menu on mobile

[Leo310]

What

Adds a Take photo row to the composer's attach (+) menu on mobile, between "From device" and "From vault". It clicks a second hidden <input type="file" accept="image/*" capture="environment">, which the mobile WebView routes straight to the camera, instead of the "From device" sheet where Take Photo is one of several choices. The photo goes through the existing onFileAttachment → processFiles path (size cap, vision-model check, temp copy into the attachment folder). The row is only rendered when Platform.isMobile.

An earlier revision also added a desktop webcam modal. It was dropped: Obsidian's macOS build (1.13.7, notarized Developer ID) is signed with the hardened runtime but without com.apple.security.device.camera, so macOS denies camera access silently on every Mac and the modal could only show an error; on Windows/Linux a laptop webcam is a poor way to photograph pages. It is recoverable from this PR's history if Obsidian ever ships the entitlement.

How I tested it

bun run check, bun run format, bun run lint, bun run test pass locally (1943 tests). Not tried on a device yet; the maintainer tests on iOS before merge.

AI assistance: Claude Code wrote the change from Leo's brief ("add a from camera option to the attach menu", later "cut it back to mobile only"); Leo reviews and tests on iOS.

Checklist

• bun run check, bun run format, bun run lint, and bun run test pass locally
• I tried the change in a real Obsidian vault (or explained above why that isn't applicable)
• I read CONTRIBUTING.md, including the section on AI assistance
• If this adds a provider, a bundled skill, a built-in tool, or changes manifest.json: I noted that the docs site needs updating (n/a)

[greptile-apps]

Confidence Score: 5/5

[Medium risk] Adds camera capture option to the chat attach menu.

The PR appears safe to merge based on the reviewed changes.

Summary

Adds a mobile-only “Take photo” option to the chat attachment menu.

• Opens a camera-targeted file input and passes the captured image through the existing attachment handler.
• Leaves the desktop attachment menu unchanged.

Diagram

%%{init: {'theme': 'neutral'}}%%
flowchart LR
  A[Mobile attach menu] --> B[Take photo]
  B --> C[Camera file input]
  C --> D[Existing attachment handler]
  D --> E[Attachment checks and vault copy]

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_{Reviews (8) · Last reviewed commit: "Merge branch 'main' into feat/attach-fro..."}