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fix(mobile): keep a split tab's hidden panes from resizing the shared pty - #840
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… pty A phone shows a split tab one pane at a time and keeps the other panes mounted behind it at the full canvas (#819). They fitted and resized their shared ptys to the phone's screen, so a PC browser drawing the split saw those panes at the phone's size. A hidden pane now attaches with keep_size and sends no resize; shown again, it fits and takes the pty, as a switch back from the chat lens does. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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📝 Summary
Merge Risk: 🔵 Low · up to An interrupted render can briefly cause a pane to issue or miss a terminal resize using the wrong visibility state. Other inspected resize paths are guarded, so the remaining merge risk is limited. Pre-merge checks |
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| Check name | Status | Explanation |
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| Title check |  |
The title clearly and concisely describes the main change: preventing hidden split-tab panes on mobile from resizing the shared PTY. |
| Description check | |
The description explains the problem, implementation, resulting behavior, regression coverage, validation results, and an unrelated baseline failure. It uses a "Tests" heading instead of the template'… |
| Docstring Coverage | |
Docstring coverage is 80.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 5 functions across 6 files. (1 skipped: 1 u… |
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A pinch begun on the shown pane and finished after a switch hid it resized the shared pty and cleared keepSize; it now checks sizesPty() like every other resize path. The regression now also reconnects twice to check keep_size on attach for the hidden pane, compares rows as well as columns, and checks a pinch that ends hidden. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Inline comments:
Review comments at @src/components/PaneTerminal.tsx:
- Line 173: Move the shownRef.current assignment out of render in PaneTerminal
and update it in a useLayoutEffect keyed to shown, so abandoned renders cannot
expose uncommitted visibility to resize callbacks.
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📒 Files selected for processing (7)
CHANGELOG.mdscripts/ci-browser.shscripts/ci-browser.test.tsscripts/phone-split-grid-demo-regression.tssrc/components/PaneCanvas.tsxsrc/components/PaneTerminal.tsxsrc/lib/paneSubmitContext.ts
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ci-browser.sh lists both new demo scripts; the lane count is 38. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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## Change Release 0.4.8, from main at ca6db6e (20 PRs since v0.4.7: the 0.4.7 mobile walk-through fixes, two contributor PRs and the revived #793). - `package.json` and `herdr-plugin.toml`: 0.4.8. - CHANGELOG: `[Unreleased]` becomes `[0.4.8] - 2026-10-12`, with the compare links. Twelve entries that had no PR link get theirs (#835 #837 #838 #840 #842 #843 #844+#848 #845 #847 #849 #851 #852). A Maintenance line says the remote-PC runtime is now version 27. - `release-summaries.json`: 0.4.8 in en/ko/ja/zh/tr (3 new, 6 improved, 8 fixed). The Turkish lines are not checked by a native speaker. - `REMOTE_BUNDLE_VERSION` 26 -> 27: #836 adds the `pending-hold` server feature and #787 serves precompressed assets, so `remote-v27` is published before the app release. Every PR merged since v0.4.7 is linked in the section: #787 #788 #793 #835 #836 #837 #838 #839 #840 #841 #842 #843 #844 #845 #846 #847 #848 #849 #851 #852. ## Validation - `bun scripts/release-notes.ts 0.4.8` renders the summaries and the full changelog (116 lines). - `bun run check fast`: generated types, typecheck, build and 2800+ unit tests pass. ## Release After this merges and its CI on `main` passes: push `remote-v27`, wait for its release, then run the Release workflow with `0.4.8`. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
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Problem
Since #819 a phone shows a split tab one pane at a time and keeps the other panes mounted behind it at the full canvas. In the terminal lens those hidden panes fitted to the phone and sent
resize(and attached withoutkeep_size), so the shared ptys of panes the phone was not even showing shrank to the phone's size. A PC browser drawing the same split saw them at the phone's geometry.Change
PaneShownContext(src/lib/paneSubmitContext.ts):PaneCanvaspassesfalsefor a pane a phone hides behind the one it shows (alone !== null && alone !== pane).PaneTerminalsizes the pty only when presented and shown (sizesPty()): every resize path (role ack, ResizeObserver, refit on focus, font load, narrow-font fit, lens switch) checks it, and attaches from a hidden pane carrykeep_size.keepSizefor reconnects.Tests
scripts/phone-split-grid-demo-regression.ts(demo app, phone): records the socket's frames; turning the phone resizes the shown pane but the hidden one sends nothing; shown again from the tab menu, it takes the pty at the phone's columns. Fails without the fix ("the hidden pane sends no resize"). Added toci-browser.sh(lane count 36 → 37).bun run check fast,tab-menu-regression,mobile-tabs-regression,ui-regression,mobile-viewport-regressionpass.narrow-pane-demo-regressionfails locally at "a split under 80 columns" onmaintoo (82 columns at 1450px on this machine's fonts); unrelated to this change.🤖 Generated with Claude Code