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5 Commits
Author SHA1 Message Date
Codeman maintainer 7a30a31430 fix(terminal): merge-time fixes for the silent-failure paths (#431)
- While another device holds the pane width (_paneWidthRefused), a resize
  now asks for the container's width without applying it locally
  (_geometryForResizeRequest: rows follow the container, columns stay at
  the PTY's). Fitting first re-wrapped the whole buffer to the container
  and back on every 30s mobile retry, and throttledResize ran the
  scrollback clear for a resize that brings no redraw. selectSession
  clears the flag, since it belongs to the previous pane. New unit tests
  run the real mixin against a fake terminal and fail without the fix.
- Session seeds _ptyCols/_ptyRows at spawn (_notePtySpawnGeometry), so a
  reattached pane reports its tmux window's real size through ptyGeometry.
- Session.resize's declined-branch comment names ptyGeometry, not the
  deleted ptyCols/ptyRows getters.
- Delete the dead terminalGeometryAgrees() and its window export.
- test/xterm-private-api.test.ts header: it pins the exact locked version,
  so any bump fails, not only a major.
- The main-terminal fit sweep also matches fitAddon?.fit?.(), and
  CLAUDE.md names the modules it actually covers.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-23 11:40:03 +02:00
Rounak DattaandClaude Opus 5 e1e7dc5bd8 fix(terminal): Ark0N's read of the #464 geometry work
Five items, two of which he could only see by running it, plus six smaller
ones. Taking the two blockers first, because both were wrong in ways the
existing tests could not catch.

**Adopting the PTY's rows put the CLI's input line off-screen.** A phone that
took a desktop's 43 rows into a viewport with room for 18 painted an
`.xterm-screen` far taller than its container; xterm's own viewport then had
nothing to scroll, so the bottom of the frame sat below the container with no
gesture able to reach it. Output visible, typing invisible, for as long as the
desktop kept the claim hot. `reconcilePtyGeometry` adopts COLUMNS ONLY now:
width is the axis Ink's wrap and `eraseLines` arithmetic depend on, and keeping
the local row count keeps the composer at the bottom of a viewport that
scrolls. Measured at his geometry — a 360x300 container against a 198x43 pane
now keeps 13 rows, takes 198 columns, paints 202px into a 210px container, and
the input line is inside the box.

**`capture-geometry-retry.browser.test.ts` failed, and CI could not see it**
because the file is in `BROWSER_TEST_GLOBS`. Its premise WAS the clamp —
`getTerminalDimensions()` floored while `fitAddon.fit()` did not — which this
work removes at the source, so it can never hold again at any viewport. The
case survives on its own terms: a pane already drawing at the requested size
must not be replayed. Its premise is now the #464 invariant itself, that the
floored report and the terminal agree, which is a stronger guard because the
clamp coming back fails it here rather than silently restoring the replay loop.
The helper docblock that repeated the old premise is corrected too.

**A session with no pane reported 120x40 and the client adopted it.**
`resize()` writes `_ptyCols`/`_ptyRows` only when `ptyProcess` is set and
nothing seeds them from the spawn geometry, so a dead-pane session still held
the constructor defaults — clicking that tab resized the browser terminal to
120x40 and, on anything narrower, claimed another device owned the pane when
none existed. `Session.ptyGeometry` returns null without a pane, the HTTP route
answers `{}` and the socket sends no frame at all. The raw `ptyCols`/`ptyRows`
getters are deleted rather than left available to be misused again.

**The 40-column floor clipped the pane with nothing able to reach it.** The
affordance keyed on a PTY mismatch, and the floor produces no mismatch — xterm
and the PTY agree throughout, the terminal is simply wider than the box. It
keys on what does not FIT now, MEASURED (`.xterm-screen` against the container,
on the next frame, because the screen takes its width with the render) rather
than derived from cell arithmetic. Measured at 360px: font 24 applies 40
columns and paints 560px, and all 200px of the overhang is reachable.
`.pty-oversized` is renamed `.term-overflows-x`, because after this the old
name describes only one of the two causes.

**"Scroll sideways" did not work on touch for the sessions it targets.**
`touch-action: pan-x` is cancelled before it starts by the `preventDefault()`
`touchstart` calls on every 'content' tap. The terminal's own touchmove handler
pans the container now, with the axis locked once per gesture so a diagonal
cannot pan and scroll at once, and the CSS grants no `touch-action` at all —
handing the browser a pan AS WELL would move the pane twice for one finger on
the taps where that preventDefault does not run. Measured under real touch
dispatch: a 140px swipe reaches `scrollLeft` 140 where it reached 0 before, the
buffer does not move with it, and a vertical swipe still scrolls the scrollback.

Three defects in the above, found while checking it rather than by being told:

- `canPanHorizontally` first tested `scrollWidth > clientWidth` alone, which is
  true of a container that is not a scroller — a sideways swipe would have
  locked the axis, done nothing, AND suppressed the vertical scroll it should
  have been. Gated on the class as well.
- The notice advised scrolling sideways whenever the PTY was wider, including
  when it still fitted and nothing scrolled. It is gated on measured overflow,
  and on a comparison against the width this container WOULD request rather
  than the one it currently holds — once adopted those are equal, so the second
  question answers itself false while the condition is still true.
- `_syncTerminalOverflowAffordance` could throw out of `document.getElementById`
  before reaching its try block. It runs off every geometry change, so a
  cosmetic affordance could have taken the resize down with it.

The smaller items:

- `docs/architecture-invariants.md` no longer explains the equality guard as a
  clamp signature; it records what the clamp used to do and why it cannot any
  more. Edited by hand — that file is outside the Prettier glob, and letting
  Prettier near it rewrote eleven unrelated emphasis markers.
- `throttledResize`'s HTTP fallback reads the reply. It is the path where a
  declined resize is least likely to be noticed, because no socket means no
  `{"t":"zc"}` frame either.
- The changeset covers the whole release: the geometry work, the queued replay
  clear, the renderer watchdog, the body-covering fetch deadline, the WebSocket
  output-gap reconcile, the build-generated service-worker precache and
  per-build cache key, and the crash-trail hygiene.
- `@xterm/headless` is declared in the root devDependencies instead of being
  reached through workspace hoisting.
- The output-gap marker is cleared after any response arrives, not only when
  the capture was non-empty: a server that answers with an empty capture HAS
  reconciled us, and leaving the marker set refetched on every reconnect.
- `e587d845`'s message claimed a test asserted the failed-load copy against the
  built asset. It did not — that assertion lived in a probe deleted with the
  other scratch scripts, so the claim was false when it was written. There is a
  real test now, and it reads the source rather than `dist/`, because `dist/` is
  not committed and a test that skips when it is absent would pass for the wrong
  reason in CI.

`Session.ptyGeometry` gets behavioural coverage against the real class in
`session-resize-arbitration.test.ts` rather than a source guard, including the
contrast — a pane that does exist still reports, and still follows a resize —
so "always null" would fail it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-22 18:53:46 +05:30
Rounak DattaandClaude Opus 5 d9fa9ba1eb test(terminal): follow the existing suites to the one geometry owner
The gate caught fourteen failures the focused tests could not: every harness
that builds a partial app out of cherry-picked mixin methods, and every source
guard that named `fitAddon.fit()` by hand.

Most are wiring — `syncTerminalGeometry`, `_refitAfterCellSizeChange` and
`_resizeTerminalTo` added to the fakes so the real chain runs rather than a
stub of it. `file-browser-search` is the one that shows why it matters: without
the method on the fake, selectSession's unconditional call threw into its own
catch and every later assertion in the file measured a load that never
happened.

Two are not wiring.

`detached-session-pane-sizing` pinned the behaviour this change deliberately
reverses. It asserted the LOCAL fit still runs for a session owned by its own
window — "withhold the send, never the reflow" — so the assertion is restated
rather than patched, with the reason beside it and in the file's docblock: a
reflow the PTY is never told about leaves this xterm rendering a CLI's frames
against a shape that does not exist, and the popup that owns the pane is
drawing for its own width regardless. The old rule bought a garbled frame, not
a correct one.

`mobile-prompt-composer` sliced `_cleanupSessionData` as a fixed 1200-character
window, so the assertion depended on how much unrelated code sat above the line
it cared about. It reads the whole method now.

`terminal-scroll-intent` records `syncTerminalGeometry` rather than `fit`,
under its own name: recording a bare fit there would name the very thing the
subject was changed to stop doing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-22 13:22:28 +05:30
Michael Grundberg 070e8da81b fix(terminal): yield only the resize send, and take sizing back on redock
Review of the previous commit found four defects in it.

The guard sat above the local fit, so it suppressed a reflow as well as the
server write. tab-rail-resize performs its single settle-time refit through
sendResize and has no fallback for a truthy activeSessionId, so dragging the
rail stopped reflowing a detached session's terminal in the dashboard. The
mobile-keyboard guard fourteen lines below already draws the line correctly —
withhold the send, never the reflow — and the guard now sits after the fit.

_lastResizeDims is one value for the whole window, and both guards skip
updating it, so while a popup owns a session that value no longer describes
the PTY. _redock repaired it only for the active session. Pop out A, switch to
B, close the popup: selecting A later found unchanged dimensions, returned
"unchanged", and selectSession skipped its 400ms redraw wait — while the
server, comparing against the real pane, did resize and did raise SIGWINCH, so
the fetch painted the pre-redraw frame. _redock now clears the record on every
path, active or not.

_redock could also fire a resize for a session already gone: _onSessionDeleted
redocks before cleanup, so the id can be dead and the request is a guaranteed
404. It now checks the session still exists.

restoreTerminalSize — the header's redraw button and Ctrl+Shift+R — silently
did nothing for a detached session while still reporting success with
dimensions nothing was set to. It now says the session is sized by its own
window, where the same button works.

The `force` comment claimed a client-side dedupe that does not exist; the
deduplication is server-side against the real pane. Corrected to say what the
flag actually buys. The _redock doc comment now records that the function
writes to the server and is not idempotent.

Tests: _redock was the untested half and is the half three of these defects
sit in. It now has coverage for clearing the stale record on both the active
and inactive paths, re-asserting only for the session being shown, and staying
silent for a deleted session. The existing sendResize test now asserts the
local fit still runs.
2026-09-09 15:24:55 +02:00
Michael Grundberg 5ac516dd3b fix(terminal): let a detached session's own window own its pane size
Popping a session out left both windows sizing the same pane. The dashboard
keeps the session active and keeps measuring it, and its terminal is
narrower than the popup because the session rail takes width the popup does
not have. One PTY cannot hold two sizes, so the CLI drew frames that fit
neither window and the popup showed a garbled frame.

sendResize and the debounced window-resize handler now stand aside for a
session this window has marked detached. A solo window is exempt, since it
is the owner. _maybeRefetchFullHistory already stood aside on exactly this
condition, so the rule is not a new one.

Sizing has to come back when the popup closes: while it owned the session
the dashboard sent no resizes, so the PTY still holds the popup's geometry.
_redock now re-asserts, with force, because the dimensions the dashboard
last sent are the ones it is about to send again.

Reproduced with a dashboard and a popup on one session: before, the pane
sat at 315 columns while the popup rendered 289. After, both report the
same size and the popup's frame matches the pane exactly.
2026-09-09 14:20:34 +02:00