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fix(split): accept a pane drop whose target node was just redrawn - #984
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…flake sticky and Windows tests The pane area accepted a sidebar drag only on dragover. When the node under the pointer is replaced between the last dragover and the drop (xterm redraws a row, the chat transcript renders again), Chromium's drop hit test sends the new node a dragenter that nobody accepts and then refuses the drop (dragenter, dragleave, dragend; no drop). The area now accepts dragenter as well. A new split-view case replaces the node under the pointer right before the drop; it timed out without the fix, as ui-contexts did in CI. sticky-modifiers: herdr's first screen turns bracketed paste on, and it can arrive after the key bar is ready and after the test turned the mode off, so a dropped "z" was wrapped in paste markers. The test's WebSocket route now strips that mode from the stream. windows-plugin: a failing cleanup stop in the finally block hid the test's first failure. The cleanup error is now ignored after an earlier failure. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 4 files. (1 skipped: 1… | Write docstrings for the functions missing them to satisfy the coverage threshold. |
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Check name Status Explanation Linked Issues check Check skipped because no linked issues were found for this pull request. Out of Scope Changes check Check skipped because no linked issues were found for this pull request. Description check The description clearly explains the problems, root causes, changes, and validation results. It includes the required Change and Validation sections and provides relevant test outcomes. Title check The title clearly identifies the primary product fix: accepting a pane drop when the target node was redrawn. It is concise and specific.
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Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 4 files. (1 skipped: 1 unsupported.)
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devswha
marked this pull request as draft
October 13, 2026 19:35
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Parked as a draft: a UI/UX rework is planned, and it will rewrite the browser tests this PR deflakes. Revisit after the rework if the flake still shows on the new UI. |
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Review comments at @scripts/sticky-modifiers-regression.ts:
- Around line 55-56: Make the PTY filter in the regression script stream-aware:
retain any trailing partial `\x1b[?2004h` sequence between `pty-data` frames,
remove it if completed by the next frame, and forward other data unchanged. Add
a regression test where the sequence is split across frames; do not add
combined-mode parsing.
Review comments at @scripts/windows-plugin.test.ts:
- Line 152: Update the `stop` cleanup handler so it does not suppress a failed
`run("stop")`: keep the body failure primary, report the cleanup failure, and
complete an ownership-checked process termination and exit wait before removing
`scratch`.
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📒 Files selected for processing: 5
changelog.d/split-drop-on-redrawn-node.mdscripts/split-view-regression.tsscripts/sticky-modifiers-regression.tsscripts/windows-plugin.test.tssrc/App.tsx
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## Change Over the last day about three in ten runs of CI's browser lanes failed, on `main` as on pull requests, each time somewhere else. Four of the recurring places are races in the checks themselves, not in the app. Each was reproduced with a named delay before it was changed: - **`terminal-input-regression.ts:65`, "input regression timed out"** (5 times). The check waits for the "Waiting for terminal input…" banner to be hidden, then dispatches `online` and waits for a ping. The banner is drawn only on a connected pane, so before the socket opens it is hidden too, and `wake()` then has nothing to probe (`probe()` returns unless the socket is open and the snapshot has said `ping`). No later event sends one. The check now waits for `.conn-live` first. Reproduced by opening the page's first socket 3 s late: 2 of 2 failed with CI's message at that line; 3 of 3 pass with the fix under the same delay. - **`update-notice-regression.ts:74`, "one tap asks for the install: 0 !== 1"** (2 times). The line says "Starting the update…" as the button is pressed; the route that counts the request can run after that text is seen. The check now waits for the install request's response before it reads the count, for the first press and for Try again. Reproduced by counting the request 400 ms late: 2 of 2 failed with CI's message; 3 of 3 pass with the fix. - **`usage-regression.ts:157`, "a hidden strip asks for nothing: 7 !== 6"**. Opening Settings mounts its own `useUsage`, which asks once; that request could be counted after the check had read its count and reloaded. The check now marks the reloaded page's requests with a header and asserts that none of those asked for usage. Reproduced by counting requests 150 ms late: 3 of 3 failed with CI's message; 3 of 3 pass with the fix. With plan limits switched back on before the reload the assertion still fails, as it must. - **`mobile-viewport-regression.ts:37`, `'' !== 'contain'`** (3 times). The transcript's first node is replaced as the conversation loads, 42 to 126 ms after the composer appears in three local runs. A locator that found the first node and read its style after the swap reads a node outside the document, whose computed style is empty. The check now finds the node and reads the style in one step in the page. The swap and the empty style of the replaced node were observed; the timing that lands the read between them was not reproduced. No app code changes. `sticky-modifiers` and the split drop are #984's, `chat-virtual` is #985's. ## Validation - macOS arm64, Bun 1.4.0, herdr 0.9.3. `bun run typecheck`: pass. `scripts/conventions.test.ts`, `changelog-fold.test.ts`, `pages-gate.test.ts`: 39 pass. - `bun run check run --build bun scripts/ui-regression.ts`: 65 PASS, exit 0. - `bun scripts/ui-contexts-regression.ts`: exit 0, all 24 checks. - The before/after runs above used a throwaway runner and delays that are not in this PR. - Not run locally: the integration lane and the other browser scripts.
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…laky (#1002) ## Change CI's browser lanes failed about three in ten runs over the last day (57 of 192 jobs on the self-hosted runner, 29 of 89 on GitHub's before that), on `main` as on pull requests, at more than twenty different places. Until those races are fixed one by one (#984, #985 and the four in the companion PR are a start), every PR waits on reruns by hand. `scripts/ci-browser-parallel.ts` now runs a failed script a second time. A script that then passes does not fail the lane, and is not hidden as a pass either: - its first log is kept as `<script>.attempt-1.log` (uploaded with `browser-logs`) and its last 400 lines are printed; - the summary marks it `~`, and `summary.json` lists it under `flaky` with the first log's path; - on GitHub it gets a warning annotation and a line in the job summary. A script that fails twice fails the lane as before. `BROWSER_RETRY=0` turns the second run off. The serial lane (`ci-browser.sh`, `bun run check browser`) is unchanged: it still stops at the first failure. The cost is real and worth saying: a failure that only happens sometimes can now merge. That is why a flaky pass is loud. This keeps one PR from waiting on another change's race; it does not make a race acceptable. ## Validation - macOS arm64, Bun 1.4.0. `bun run typecheck`: pass. `scripts/pages-gate.test.ts` (new case for `scriptOutcome`), `conventions.test.ts`, `changelog-fold.test.ts`: 40 pass. - Run for real with `BROWSER_SCRIPTS=scripts/deep-link-demo-regression.ts bun scripts/ci-browser-parallel.ts` and a throwaway line that made that script exit 1: - failing on its first run only: exit 0, `FLAKY` line, `~` in the summary, `flaky: ["scripts/deep-link-demo-regression.ts"]` in `summary.json`, both logs present, the `::warning` line and the job-summary text written; - failing every time: exit 1, "FAILED … (exit 1, twice)"; - failing on its first run with `BROWSER_RETRY=0`: exit 1 after one run. - Not run locally: the lanes themselves beyond that one script.
This was referenced Oct 14, 2026
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## Change Fix the intermittent `server/omo.contract.test.ts:52` failure in “labels a running omo pane when herdr supplies no agent kind”. ## Root cause and evidence The fixture waits for its script path in one herdr `pane.process_info` response, but `labelOmoPanes` performs a separate fresh process probe. The fixture marker is not a readiness barrier for that probe: a missing matching foreground process or a failed probe leaves the original snapshot's agent undefined. The test asserted the first label sample immediately instead of waiting for the state it describes. Main run 38555205694 on October 14, 2026 failed after 199.60 ms: expected `"omo"`, received `undefined` at line 52:77. Five local pre-fix isolated runs passed, including an attempted concurrent unit-suite load, so the failure remained intermittent locally. The CI log and the two independent process probes establish the synchronization gap without guessing which negative-probe branch occurred. Open PRs #984 and #985 do not touch this test. PR #923 changes custom OmO runtime recognition but leaves this one-shot assertion unchanged, so this is not a duplicate. ## Fix Poll the exact labeled state with a bounded five-second deadline and 50 ms interval. The same original snapshot is retained, so all three existing assertions still prove that herdr supplied no agent kind, the derived snapshot is labeled `omo`, and the input snapshot is not mutated. No assertion retry, timeout increase, fixed sleep, production change, or changelog entry. ## Verification - Five consecutive isolated contract runs passed on one unchanged source fingerprint: `CHECK_WAIT_SECONDS=3600 bun run check run bash -c 'for i in 1 2 3 4 5; do bun test --timeout 15000 ./server/omo.contract.test.ts || exit 1; done'`. Report: `23297fbe-e853-45cf-ad71-a4c6990b77e0`. - `bun run check fast` passed on the same source fingerprint. Generated types, typecheck, build, and unit tests all passed: 3,574 passed, 50 skipped, 0 failed. Report: `19778f35-f21d-4c74-987e-9c48ae6620a9`. - `git diff --check` passed. Toolchain: Bun 1.4.2, Node 22.23.1, herdr 0.9.3, macOS arm64. The lane handoff records the root cause, CI timing evidence, diff, full verification log references, and this PR URL at `.omo/mass-ulw/2026-10-14/A3.md`.
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…owth (#1098) ## Change ### Root cause The stale-navigation test equates complete bottom-relative scroll snapshots after a substring output receipt. The receipt can precede remaining cat/terminal-echo output, so history can grow while the viewport stays anchored. Main CI run 38559049536 expected max/offset 462/308 and received 463/309: both have absolute top row 154 and viewport_rows 40. paneFind rejects a stale previous revision before copy_search or pane.scroll. The test was treating history growth as viewport movement. ### Fix Compare the exact absolute viewport top (max_offset_from_bottom - offset_from_bottom) and viewport height in both navigation directions. Preserve the positive scrolled-offset precondition, HTTP 409, and stale_content assertions. A one-row viewport move still fails. No timeout increase, retry, sleep, or production change. ### Evidence - Retrieved the failed CI log with `gh run view 38559049536 --log-failed`; the failure is at `server/find.contract.test.ts:174`. Both snapshots describe top row 154, not a viewport move. The copy-revision guard in `server/herdr/client.ts:511` rejects this request before search or scroll. - Checked open file/offset PRs and read #984, #985 and #1090; none fixes this exact failure. - Five pre-fix isolated iterations passed (18 tests each), and a sixth iteration running alongside `HERDR_TEST_MODE=unit bun run test:unit` passed; the load also exited 0. No local reproduction claimed: the CI log and scroll-coordinate contract prove the cause. - Replaying the CI snapshots as assertions makes the original equality fail and the fixed invariant pass; a one-row movement, height change or null scroll metadata still fails. ## Validation - `CHECK_WAIT_SECONDS=3600 bun run check run bash -c 'for i in 1 2 3 4 5; do bun test --timeout 15000 ./server/find.contract.test.ts || exit 1; done'`: 5/5 consecutive passes, 18 tests each, runner exit 0; source unchanged throughout. Baseline and fixed reports: `b79813b2-1dd9-4c2e-8121-011ea62d78d2`, `3bedd127-711e-479a-89e4-03081936ad09` under `node_modules/.cache/check/`. - `UNIT_TEST_WORKERS=2 CHECK_WAIT_SECONDS=3600 bun run check fast`: exit 1 only in untouched `server/portal.test.ts`, `running Portal > does not follow redirects when checking the relay version` (10-second readiness timeout reporting Portal not installed). Unit totals: 3573 pass, 1 fail, 50 skip across 287 files. Generated-type freshness, typecheck and build all exit 0. Report: `130c8ec7-b2ec-46d0-ae89-86daacbda03f`. This is recorded as an out-of-scope load/environment failure under the assignment's explicit exception; PR CI is the authoritative gate, and local Fast is not claimed green. - `git diff --check`: exit 0. LSP unavailable (`typescript-language-server` not installed); repository typecheck passed instead. Workflow syntax is platform-skipped on darwin arm64 and remains CI-owned. - Only the contract test changes. No production behavior or user-visible change, so no changelog fragment is required by `changelog.d/README.md`.
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October 14, 2026 19:32
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Problem
Three CI flakes:
scripts/ui-contexts-regression.ts:split-view-regression.ts:81timed out after 30 s waiting for two.pane-slots. The guide had shown "right", the mouse was released, and no split opened. Seen atsplitRightlines 467 and 488 (runs 38426853901 and 38443069041).scripts/sticky-modifiers-regression.ts: in the kitty pass, the dropped "z" arrived as\x1b[200~z\x1b[201~(run 38443069041).Root cause
dragover. A drop runs one more hit test. If the node under the pointer was replaced since the last dragover (xterm redraws its rows, the chat transcript renders again), Blink sends the new node adragenter. Nobody accepted that event, so Chromium refuses the drop. The page then getsdragenter → dragleave → dragendand nodrop. I reproduced this by replacing the node under the pointer before the drop and recording the events.\x1b[?2004h. The test waits for the key bar to be enabled (input-ready) and then injects\x1b[?2004l. Input-ready can come before the first screen: in the kitty pass, the probe measured the stream's2004h4 ms before the inject. When the first screen arrives later, it turns bracketed paste back on, and xterm wraps the drop.windows-plugin.test.ts:62 ← :147, and 147 is thefinallyblock's cleanuprun("stop"). So an earlierexpecthad already failed, and the cleanup stop's error replaced it. The log does not show which earlier check failed or which verification condition inplugin.ts stop()tripped.Change
src/App.tsx: the pane area also handlesonDragEnterCapturewith the same accept logic as dragover. It still returns early for drags that are not pane drags.scripts/split-view-regression.ts: new case 9b. A test-owned cover node over the pane area is replaced between the last dragover and the drop. The drop must still open the half.scripts/sticky-modifiers-regression.ts: the test's WebSocket route strips\x1b[?2004hfrom herdr'spty-data, so bracketed paste stays off for the whole run, which every assertion assumes. Flow-control offsets come from the server, so editingdatais safe. The strip does not catch a combined form such as\x1b[?2004;1049h. Herdr does not emit that today.scripts/windows-plugin.test.ts: after an earlier failure, a failing cleanup stop no longer replaces the original error. The next time this flakes, the log will show the real failure. This is not a root-cause fix for the Windows flake.changelog.d/split-drop-on-redrawn-node.md: Fixed + Maintenance.Validation
waitForFunctiontimeout at line 81. With the fix it passed in 3 out of 3 split-view-only runs.dragenter, dragleave, dragendwith no drop before the fix, and passed after it.scripts/ui-contexts-regression.tsrun passed every check, checkSplitView included, under shared-machine load (nice 10). Thecheckwrapper exited 1 only because a changelog file was added while it ran ("source changed during the check").scripts/sticky-modifiers-regression.tspassed 5 out of 5 runs (nice 10).bun run check fastpasses.🤖 Generated with Claude Code