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fix(download): keep iOS home screen app saves in-app via the share sheet - #353
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Included review availability: Your plan provides up to 4 included reviews per hour; 2 remain after this review. 📝 WalkthroughWalkthroughThe change centralizes blob and URL downloads, adds success results and fetch-error handling, and routes existing download callers through the shared helpers. Markdown export now reports the save result before showing success feedback. ChangesShared download handling
Priority: ➖ Normal Estimated code review effort: 2 (Simple) | ~15 minutes Change: Bug fix Sequence Diagram(s)sequenceDiagram
participant SessionDetail
participant downloadMarkdown
participant saveFile
participant WebShareAPI
SessionDetail->>downloadMarkdown: Export Markdown content
downloadMarkdown->>saveFile: Save Blob with filename
saveFile->>WebShareAPI: Share file on iOS home-screen app
saveFile-->>downloadMarkdown: Return save result
downloadMarkdown-->>SessionDetail: Return save result
SessionDetail->>SessionDetail: Show success toast when result is true
Merge Risk: ⚪ Minimal · up to Downloads preserve their existing browser behavior and add iOS share-sheet handling without a confirmed merge-blocking issue. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
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Inline comments:
In `@frontend/src/lib/download.ts`:
- Around line 59-66: Update saveFileFromUrl’s iOS home-screen branch to catch
failures from fetchWrapperBlob, show the existing failure toast, and only call
saveFile after a successful fetch. Preserve the existing non-iOS saveViaAnchor
path; do not add separate response validation.
In `@frontend/src/pages/SessionDetail.tsx`:
- Line 423: Update handleExportSession and the Markdown export chain so
downloadMarkdown returns a success result propagated from saveFile and
saveViaShareSheet; represent cancellation, share-unavailable, retry, and generic
share-error outcomes as unsuccessful. Await the result in handleExportSession
and emit the “Exported to ...” toast only when the export succeeds.
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📒 Files selected for processing (9)
frontend/src/api/files.tsfrontend/src/api/repos.tsfrontend/src/components/file-browser/FilePreview.tsxfrontend/src/components/file-browser/FileTree.tsxfrontend/src/components/settings/OpenCodeConfigManager.tsxfrontend/src/lib/download.test.tsfrontend/src/lib/download.tsfrontend/src/lib/exportSession.tsfrontend/src/pages/SessionDetail.tsx
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Fixes Applied SuccessfullyFixed 4 file(s) based on 2 CodeRabbit feedback item(s). Files modified:
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Oct 1, 2026
…eet (chriswritescode-dev#353) * fix(download): keep iOS home screen app saves in-app via the share sheet * fix: apply CodeRabbit auto-fixes
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Problem
In an installed iOS home-screen web app, tapping any download hands the file to iOS Quick Look ("Open in ..."), which takes over the app's only web view with no back affordance — the user is stranded and must force-quit. This is a known, unfixed WebKit/platform behavior (webkit #236943, #275288) affecting
<a download>,blob:URLs, andContent-Disposition: attachmentalike;target="_blank"does not help becausewindow.openbypasses the manifest scope. The same code works correctly in an iOS Safari tab.Fix
New shared helper
frontend/src/lib/download.ts:saveFile(blob, filename)/saveFileFromUrl(url, filename)navigator.share({ files: [File] }), never a navigation.AbortError(user cancelled) is silent.NotAllowedError— transient activation is 5s in WebKit andawait fetchcan outlast it — shows a toast with a Save action, so the retry runs on a fresh tap with the blob already in memory.All six duplicated download implementations now route through it:
frontend/src/api/files.ts,frontend/src/api/repos.ts(ZIPs)frontend/src/lib/exportSession.ts(now async; callerfrontend/src/pages/SessionDetail.tsx)frontend/src/components/settings/OpenCodeConfigManager.tsxfrontend/src/components/file-browser/FileTree.tsx,FilePreview.tsxAlso fixed a latent race while consolidating:
revokeObjectURLwas called synchronously afterclick(); it now defers a tick.Testing
frontend/src/lib/download.test.ts: anchor path, share path (asserts no anchor click), and the activation-loss retry.tsc -b --noEmitclean;eslint .clean.downloadRepo) and share cancellation (AbortError, silent) were also checked.Note: verification was on the simulator, which cannot fully vouch for share-sheet destinations (AirDrop/Photos behave differently than on device); a physical-device pass remains worthwhile.
How to test manually
Open the app from an iOS home-screen icon (not a Safari tab), open a file in the file browser, and tap download. A system share sheet appears with Save to Files instead of a Quick Look takeover, and the app stays usable.
Summary by CodeRabbit
New Features
Bug Fixes
Tests