Follow-ups promised on merge, plus review findings on the batch itself:
- chat: task-tool output now respects the 512KiB render cap; quick-open
icon is visible at rest on coarse pointers and reachable by keyboard
(row keydown no longer swallows inner-button Enter/Space); composer
inline-code decoration drops the metric-shifting padding; a btw fork
send carries only the boundary instruction, never the promotion notice
- sync: cascade revert/unrevert aborts busy descendants, busy state is
read from every child store at the moment of use; rule 9 documents
redo clearing all descendant revert markers
- electron: renderer recovery keeps memory-eviction (a valid
render-process-gone reason) and both windows share one
attachRendererRecovery helper
- vscode: process registry is a thin re-export of the web module
(provider-env-aliases precedent) with ordered register/unregister
writes and an awaited close
- server/cli: managed-process registry takes injectable deps (fixes the
unreaped-orphans ReferenceError), corrupt settings errors name the
file, getWorktrees test restores console.warn
- tests: module-mock harnesses removed (AgentsSidebar, SettingsView
mobile focus — behaviors stay live but uncovered, accepted trade),
QuestionMarkdown asserts rendered DOM
- i18n: German gains the debug-panel request keys, Japanese/German drop
removed worktree keys, Ukrainian unit spacing fixed
- changelog: Copilot AI Credits entries (main + VS Code)
`useBtwPanelState` already subscribes to the composer's own session — it is
what the fork link is derived from — so asking `useSession` for the same
session and directory a second time in `ChatInput` was a duplicate
subscription for a value already in hand. Expose it as `parentSession` and
read the promoted flag from there.
No behavior change.
Review catch: `promoteBtwSession` removes the btw metadata, but the
boundary instruction is persisted on every message the session sent while
it was a side conversation, and there is no API to delete a message part
after the fact. A promoted session therefore keeps reading "no sub-agents,
do not touch the workspace" out of its own history, in a session that is
no longer a side conversation.
Promotion cannot delete those lines, so it answers them instead:
`withoutBtwSessionMarker` now leaves `openchamber.btwPromoted`, and the
composer sends `BTW_PROMOTION_NOTICE` with every message in a session
carrying it — stating that the session is now the main thread and the
usual tool, sub-agent and workspace permissions are in force.
It rides with every send for the same reason the boundary does: the
instructions it revokes are re-read on every turn, so a one-shot notice
would lose its position relative to them as the conversation grows.
`btwPromoted` is additive and optional. A session that never went through
`/btw` never has it, and one promoted before this change simply keeps the
old behavior.
`/btw` forks the session, so the model receives the parent's whole
conversation — including whatever plan was in flight when the user typed
the command. Nothing tells it that this history is context rather than
its own task, so the fork frequently carries on with the parent's work
instead of answering the side question, which is the opposite of what
`/btw` is for.
Send a boundary instruction as a synthetic part with every message in a
btw session: with the first question in `startBtwSession`, and with each
later send while the panel is expanded and the composer is talking to the
fork.
The wording is deliberately position-independent — it names the history
inherited from the parent thread rather than "everything before this
boundary". The instruction rides along with each send instead of being
pinned once at fork time, so a positional phrasing would be re-anchored
every turn and would end up telling the model to disregard the btw
session's own earlier turns.
The part is synthetic, so it is filtered out of the rendered transcript
whenever the message also carries user text — which is always the case
here. No visual change.
The chat screen relied on the browser's focused-field reveal, which holds
on iOS Safari but not on Android, where interactive-widget is also widely
ignored — the composer just stayed behind the keyboard. The draft screen's
visual-viewport pin now covers the chat screen on Android; iOS chat keeps
the native reveal.
Removes the transient aborted banner from the composer status area
Simplifies status row rendering to focus on working state and pending changes
Cleans up unused abort-status localization strings
Add to input leaves the desktop menu (mod+L owns it; mobile keeps the
button) and the New session action is gone from both variants along with
its handler and dead locale keys.
Every response already funnels through runtimeFetch, so a classifier there
spots 401s, confirms them against /auth/session (a proxied provider 401
must not read as a logout), and flips a small auth-session store. The web
and hosted surfaces show a frosted banner under the header whose Log in
button hands off to the session gate's existing unlock flow; sends are
paused while expired, the session-load error screen explains the auth case
and retries itself after login, and returning to a long-idle window
revalidates once via visibility/focus. Native mobile feeds the same signal
into its connection re-probe instead of showing the banner; VS Code is
exempt.
The failure handler restored the text only for a new-session draft; a
regular session kept its attachments but lost the prompt to a toast. The
restore now runs before any cause-specific branching: an unchanged composer
gets the text (and the session draft) back, new typing gets the failed
prompt appended instead of clobbered, and a mid-send session switch writes
it into the originating session's persisted draft.
Opening a session (or any relayout that shrinks off-screen size estimates)
could leave the viewport in a phantom tail below the measured content, with
every row out of reach above; a totalSize-change check now detects the
fully blank viewport and returns to the real end, and settling a width
resize re-asserts the end for a reader who was on it. Prompt-rail and
message jumps land on estimated offsets that shift as the target mounts and
measures; a short settle loop now re-aligns the target until layout rests,
backing off on the first user gesture.
mod+alt+arrows step through this window's session-open history (or between
neighbouring tabs when session tabs are on), mod+k r renames the current
session inline, and mod+k a toggles permission auto-accept. Pending
permission cards respond to alt+enter / alt+shift+enter / alt+backspace with
the keys printed on the buttons. The commit message box commits on
mod+enter, alt+arrows step the diff review between changed files, and the
command palette gains search-only commands for rare actions so the initial
list stays short.
- Markdown DOM cache: key includes a content-length fingerprint so an
edited or reverted part re-materializing under the same id cannot
restore stale DOM, memoization uses scalar identities instead of the
part object (store reducers recreate part objects on unrelated updates,
which re-ran the async render pipeline for identical content), and a
probe with a mismatched locale/directory no longer destroys the entry
it failed to claim.
- Sidebar bootstrap: the layout-level sync owner only knows known
directories, so expanded projects bootstrapped serialized at background
priority. The visible collection now publishes a second, expansion-
aware demand owner, restoring concurrent hydration for expanded
projects and worktree groups.
- Settings: local changes still sitting in the debounce buffer are not
yet tracked as mutations, so a settings GET racing the debounce window
briefly reverted them; reconciled results now reapply the pending
buffer.
Main replaced the chat timeline scroll engine while this branch was in
flight, which obsoletes two of its subareas and reshapes a third:
- Chat timeline: main's LegendList-based MessageList/ChatContainer win;
the activation-overscan staircase targeted the removed tanstack path
(LegendList provides adaptive rendering natively) and is dropped along
with its test.
- Scroll shadows: main's hook-based masks stay (the virtualized list owns
its scroll element — there is no wrapper to hand the styling to); the
viewport-wrapper ScrollShadow rewrite, its index.css replacement, its
test, and the call-site viewportClassName adaptations are reverted to
main. The chat OverlayScrollbar keeps this branch's disableHorizontal.
- OverlayScrollbar: the direct-DOM rewrite lands, but binding now follows
the live container node instead of binding once per ref object — the
chat scroller remounts on every session switch, and a bind-once
contract left the scrollbar attached to a dead element.
- Markdown renderer: the detached-DOM cache and warm-block fast path
merge with main's block-commit reveal (enter cascade), streaming code
highlighting, and gutter reservation; the per-block reconcile keeps
both the decoration-refresh path and the reveal cascade.
The composer rendered a second StatusRow instance carrying the
pending-changes bar and the todos dropdown, so every restyle of the
floating assistant-status chip (glass, placement, sizing) silently
restyled the composer bar and its dropdown too — for the fourth time.
StatusRow is now only the floating chip above the composer; the
composer's own bar is a new ComposerStatusBar with the pre-glass layout,
its own container name, and its own container-query classes (the
anti-overlap rules that hide the long active todo under 38rem and the
changed-files label under 30rem moved with it — losing them during the
split let the two dropdown triggers overlap on mobile). The two
components share no markup and no CSS hooks anymore.
The animated maintainScrollAtEnd also ran outside streaming, so opening
a historical session glided visibly through the whole conversation as
late row measurements corrected the end position, and an in-flight glide
could supersede explicit navigation. Corrections are instant unless the
session is actively working.
Returning to the bottom during a stream also lands on the end as of that
moment, and the list's own follow may not have re-armed after the user's
earlier gestures — the queued-send jump then fell behind the growing
reply. goToBottom now re-asserts the edge a few times (150/400/800ms)
until it holds; a new user gesture cancels the window.
The 140ms fade read as a pop next to the scroll glide. The reveal now
runs 320ms on an ease-out-quint curve with a 10px rise and a touch of
blur resolving — paint-only properties throughout, so row measurement is
untouched — and blocks committed in the same tick cascade with a 55ms
stagger instead of appearing together. Reduced motion still disables the
whole thing.
Retain detached Markdown DOM for eight recent sessions so medium-frequency session switching can restore more first-screen content without reparsing it.
Limit each session to four cached parts, reducing the worst-case retained fragment count from 36 to 32 while preventing long sessions from dominating the cache.
With block-level commit the open code fence grows by whole lines at the
throttle cadence, so the old reason to skip highlighting it (re-tokenizing
a growing block ~40x/sec) no longer applies: a partial fence now
highlights too, and streamed code arrives colored instead of colorizing
only when the fence closes. Fences beyond 300 lines fall back to plain
text until closed, keeping the repeated worker re-tokenization bounded.
A freshly committed block also enters with a short fade-and-rise. The
class goes on the block's children (the wrapper is display:contents and
cannot animate) and the transform is paint-only, so virtualized row
measurement is unaffected; reduced motion disables it.
Verified over CDP on a production build: streamed code inside a still-
open fence renders highlighted, and the code text's x-position is
identical during and after the stream.
Token-by-token streaming mutates the trailing paragraph in place on
every tick: words rewrap, the last line jitters, and the whole reply
reads as flicker. Streamed text now commits only up to the last complete
line — prose arrives a paragraph at a time (a markdown paragraph is one
logical line), code fences reveal line by line, tables row by row — and
a shown block never changes again. A paragraph that runs long without a
newline releases at the last sentence (then word) boundary so the stream
never stalls. Applies to assistant text and reasoning; tool output keeps
its raw tail.
With growth arriving in block steps, the end follow switches to the
list's animated mode so each step is a glide — reveal and scroll read as
one continuous motion. The gesture opt-out now measures at-end from the
live list state instead of the cached flag, which the animated glide
deliberately leaves stale while trailing the edge; without that, a drag
during a glide could leave the scroll-to-bottom pill unshown.
Measured: end-following holds at distance 0 for the whole stream, and
the mobile drag opt-out shows the pill in three of three runs. The
continuous glide costs ~15% more main-thread time per streamed character
than the instant follow — the price of the motion.
Three first-render polish issues:
Code blocks jumped at end-of-stream: streaming defers the per-line
line-number markup, so the finished decorate pass inserted the gutter
column and shifted every code line right. The gutter's horizontal
footprint is now reserved with CSS while the markup is deferred, so the
final pass only fills in numbers and colors.
File references were verified twice per render and re-verified with the
wrong directory: the annotation pass's own DOM writes re-triggered its
MutationObserver, and the pass also ran before the effective directory
resolved — issuing stat probes under an empty directory and a second
time under the real one. The observer now ignores the pass's own
mutations and annotation waits for a resolved directory.
Content replacing the hydration skeleton popped in: it now plays a
one-shot 180ms fade (reduced-motion aware); cached session switches
never carry the class and stay instant. Also removed the dead
disableStaging prop and its unused pendingRevealWork threading.
Verified on a production build over CDP: a streamed code block's text
keeps its exact x-position across end-of-stream, and stat probes for a
message with file mentions are unique per path with the directory header
always present. The hydration fade path could not be exercised in the
harness (the live event stream pre-populates parts in a single-project
environment) and needs an eyeball check on a cold multi-project open.
Bohdan Triapitsyn