- createEditCoordinator's finally block rebases the edits queued during a write; one that the write's 409 made inapplicable was dropped with no toast. It is now reported once, like the main loop and adoptExternal do (found by the PR bot's re-review; regression test fails without it).
- At the 32-group server cap the row and group menus no longer offer a new group, which could only fail with an untranslated 'group limit reached'. MAX_GROUPS is exported from tab-layout-browser.js.
- CLAUDE.md names the pagehide keepalive as the one deliberate exception to 'never PUT the layout outside the coordinator'.
- The Dashboard wiki page describes tab groups in the vertical rail row.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
- Pointer drag: a press released outside the rail no longer lingers. The
release is heard on window while a press is pending, a move with the
primary button up cancels it, a new press cancels any previous drag, and
an existing Escape listener is removed before another is added, so no
orphaned capture listener can swallow Escape before the terminal.
- Inline group rename: a commit by blur leaves focus where the user put it;
Enter and Escape still return focus to the header.
- A failed layout read while edits are pending keeps the held layout and the
editor and re-reads once the write settles, so a 409 is still rebased.
Dropping unsaved work now always says so in a toast.
- "Move to <group>" quotes the group name (with a matching zh-CN pattern), so
a group named "New group" or "ungrouped" no longer reads or translates like
the fixed entries.
- The group menu glyph stays visible under (hover: none).
- The sessionStorage replay copy carries { owner, baseVersion, savedAt } and is
ignored for another owner, after 60 s, or against an older layout. A move
with no anchor carries no index, so a replay keeps the row last.
- A 400 that survives the re-read is reported as "Could not save tab groups."
- closeTabRailActionMenu() no longer removes the group menu's DOM.
- Cancelling "Delete group" returns focus to the header.
- Stale comments updated.
The grouped vertical rail can now be edited from the browser: groups are
created, renamed, reordered and deleted, and tabs are moved between them, by
menu, keyboard or pointer drag. Every edit is saved through the existing
PUT /api/tab-layout; there are no server changes.
Saving (tab-layout-browser.js, pure):
- Edits are named operations (createGroup, renameGroup, deleteGroup,
reorderGroup, moveRef) applied to the rail at once, mirroring the server
model: a moved session takes the sessions that still follow it, and a
hand-moved child is marked placement 'manual'. normalizeLayout now keeps
placement and updatedAt, since whole layouts are written back.
- createEditCoordinator keeps ONE PUT {baseVersion, layout} in flight. Edits
made in the same turn share a write; edits made while one is in flight go
out on the version it returns. A 409 replays the operations onto the
layout the server returned and retries (bounded); an operation that no
longer applies is dropped and reported. A 400 re-reads first; any other
failure reports and re-reads.
- dropOperation maps a finished drag to one operation, or null for a drop
that changes nothing.
Wiring (app.js, tab-rail-resize.js):
- The session row menu gains Move up/down, Move to <group>, Move to
Ungrouped and Move to new group in the vertical rail. Before the first
group exists it offers only "Move to new group", which is how a flat rail
becomes grouped; the header strip's menu is unchanged.
- A group header opens its menu with Shift+F10 / ContextMenu, right-click or
a hover glyph (a non-focusable aria-hidden span, so the treeitem still
holds no interactive child): Rename, New group, Move group up/down,
Delete. F2 renames inline. A web tab row's Shift+F10 opens its settings
plus the same moves.
- The menu closes on Escape (consumed before the global Escape handler, focus
back to its row or header), a pointer outside, Tab, focus leaving it, a
resize, a second open and any full re-render.
- Inline group rename shares the session rename's ownership handle, so only
the current editor releases the render guard. Enter or blur commits,
Escape cancels, IME composition keys are left to the IME, and the label
becomes a flex slot so the editor gets the full width while typing.
- Pointer drag (mouse and pen) in the grouped rail only: rows before/after a
row or into a group, a header drag reorders groups. Escape cancels; the
click that ends a drag neither selects nor toggles. The flat rail and the
header strip keep their HTML5 drag untouched.
- A tab:layoutChanged read is deferred while a write is in flight and run
once it settles; a read otherwise rebases unsaved edits. On pagehide,
unconfirmed edits go out in a keepalive PUT and into sessionStorage, and
replay after reload (a no-op when the keepalive landed).
- New strings have zh-CN entries; group names reach the DOM only as text.
Unchanged: the flat rail's markup when no group exists, the tree semantics
and single roving tab stop, sessionOrder and Alt+N.
Tests: test/tab-layout-editing.test.ts (operations, coordinator, drop
mapping, menus, rename, dismissal, SSE deferral, reload recovery, flat-rail
identity) and test/tab-layout-editing.browser.test.ts (real pointer drags,
editor paint, menu Escape), listed in BROWSER_TEST_GLOBS.
Codeman maintainer