$workingSessionIds and $attentionSessionIds were independently maintained
atoms that updateSessionState had to manually keep in sync with the session
cache (paired setSessionWorking/setSessionAttention calls, plus a rotation
special-case in ensureSessionState). Make them computed() projections of
$sessionStates instead, so the data flow is one-directional:
gateway event → cache → $sessionStates → computed views.
Transition side-effects (watchdog arm/disarm, settle grace, unread marker,
compression id rotation signal) move into handleTransition, fired from
publishSessionState by diffing previous vs next — one choke point instead
of per-callsite bookkeeping. The watchdog's force-clear reaches the cache
through setWatchdogClearFn rather than a listener set.
Also:
- clearAllSessionStates disarms all watchdog timers and drops settle-grace
entries so a gateway switch can't leak stale timers or keep-set rows
- dropSessionState disarms the dropped runtime's watchdog timer
- watchdog tests now exercise the real timer→callback wiring instead of
manually simulating the clear
Follow-up to #65890 (router transitions off) and #65898 (structural
compare + first-paint budget): profiling the switch path on real 1000+-
message sessions with a new CDP harness showed the remaining freeze is
NOT markdown rendering — it's a forced-reflow cascade from mount-time
layout reads interleaved with style writes across the transcript's
layout effects, plus the first-paint budget cut landing too late to
stop the full-budget commit.
Measured on the two largest local sessions (996 and 1363 messages),
main-thread longtask totals per switch: warm 2450ms -> 557ms and
1158ms -> 194ms; first paint 1690ms -> 444ms. Harness:
scripts/profile-session-switch.mjs (same CDP family as
profile-real-stream.mjs).
- use-resize-observer: drop the synchronous initial callback and ride
the observer's spec-guaranteed first delivery instead (same frame,
after layout, before paint). The sync call ran while the commit's
layout was dirty, so every size read in a callback forced a full
reflow — with one instance per user bubble (measureClamp read
scrollHeight, then WROTE --human-msg-full, re-dirtying layout for the
next bubble), the switch commit thrashed for over a second. Inside RO
timing the same reads are free. Composer metrics (2x
getBoundingClientRect + documentElement style writes) rides the same
fix.
- Same class, same fix at the remaining call sites profiling surfaced:
ExpandableBlock and TerminalOutput (dozens per tool-heavy transcript)
now measure/pin via RO initial delivery; the tool-window and
thinking-preview pins drop their sync pin() call; the thread
timeline's initial active-tick compute joins its existing
scroll-time rAF batching so back-to-back transcript updates coalesce.
- thread/list: cut the render budget in the RENDER phase (state-from-
props adjustment) instead of the post-commit layout effect. The
effect-time cut was too late — on a warm switch React first built and
committed the full 300-part tree, then re-rendered at 60, then bumped
back to 300, so the expensive commit still happened (and on a cold
switch the bump rAF usually fired while the transcript was still
empty, so the prefetched messages rendered at full budget anyway).
The render-phase cut restarts the component before any child renders;
a second trigger handles the cold path where messages land later
under the same sessionKey.
- thread/list: backfill 60 -> 300 inside startTransition so the older
turns' markdown+shiki render is interruptible background work instead
of a synchronous freeze one frame after the switch paints. Functional
Math.max so an urgent "Show earlier" click can't be rebased back down.
- composer focus: skip the rAF/timeout focus retries when the element
is already focused — focus() runs the full focusing steps (forcing
layout) even on the active element, ~585ms per switch on a large
dirty DOM.
- Replace the tautological render-budget test (it re-declared the
constants locally and asserted 60 < 300) with behavior tests of the
now-exported buildGroups + firstVisibleGroupIndex.
Verification: apps/desktop `npx tsc --noEmit` clean; full
`npx vitest run` 210 files / 1763 passed; manual CDP check confirms the
deferred backfill commits the full transcript, stays pinned to bottom,
and "Show earlier" still pages.
Auto-compression ends the SessionDB session and forks a continuation,
rotating the stored session id. The gateway emits `session.info` with
the new `stored_session_id`, and the desktop's cache entry was updated
via `ensureSessionState` — but the URL route and `$selectedStoredSessionId`
never followed the rotation.
On the next send, `getRuntimeIdForStoredSession(oldStoredId)` returned
null (the cache entry's `storedSessionId` no longer matched the old id),
so `routedSessionNeedsResume` evaluated true, triggering a full
`session.resume` + REST transcript prefetch — the whole thread reloaded.
Fix: a new `$activeSessionStoredId` atom is set in `ensureSessionState`
when the active session's stored id changes. A `useEffect` in
`use-session-actions` subscribes to it and re-anchors the route +
selection (`setSelectedStoredSessionId` + `navigate(replace: true)`),
and cleans up the stale stored→runtime mapping.
`replace: true` because it's the same conversation — compression is
transparent to the user, so back-button stays correct.
* feat(desktop): add useKeybindHint hook and TipKeybindLabel
Add a shared hook that reads the current keybind combo for an action
id from the $bindings store (rebindable) or KEYBIND_READONLY (fixed),
returning a formatted string or null when unbound.
Add TipKeybindLabel — a convenience component that auto-reads both
its label (from i18n) and keybind combo from the action registry.
Pass only actionId for the common case; pass text to override when
the tooltip is context-dependent.
* fix(desktop): replace native title= on buttons with themed Tip
Migrate all <button>/<Button> elements using the native HTML title=
attribute to the instant, themed <Tip> component. Native tooltips are
unstyled, delayed (~500ms OS default), and visually inconsistent with
the app's instant themed tooltips.
Also adds <Tip> wrappers to icon-only buttons that were missing
tooltips entirely (dialog close, search clear, overlay close,
master-detail pane controls, keybind panel rebind/reset buttons).
Adds an enforcement test (no-native-title.test.ts) that scans all
.tsx files for <button>/<Button> with title= and fails if any are
found. Updates DESIGN.md with the icon-only button tooltip rule and
keybind hint guidance.
* feat(desktop): wire keybind hints into button tooltips
Add actionId to TitlebarTool, StatusbarItem, and SidebarNavItem so
their tooltips show the current keybind combo via TipKeybindLabel.
Fix the hardcoded NEW_SESSION_KBD in the sidebar to read from
$bindings so it stays live on rebind.
Wired surfaces:
- Titlebar: sidebar toggle, flip panes, keybinds, settings
- Statusbar: terminal toggle (view.showTerminal)
- Status stack: open agents button (nav.agents)
- Sidebar nav: new session, skills, messaging, artifacts
* feat(desktop): move keybind panel to settings tab with search filter
Move the keyboard shortcuts panel from a Radix Dialog into a proper
Settings tab (/settings?tab=keybinds). The ⌘/ shortcut and titlebar
keyboard button now navigate to this settings tab instead of toggling
a dialog. Adds a search filter to filter shortcuts by label.
- New: src/app/settings/keybind-settings.tsx (extracted from keybind-panel.tsx)
- Delete: src/app/shell/keybind-panel.tsx (dialog wrapper removed)
- Remove: $keybindPanelOpen atom and toggle/open/close functions
- Add: IconKeyboard to lib/icons.ts
- i18n: keybinds.search + settings.nav.keybinds (en, zh, zh-hant, ja)
* refactor(desktop): unify worktree dialog into shared WorktreeDialog
Extract the worktree creation dialog from StartWorkButton (sidebar) into a
shared WorktreeDialog component. Both the sidebar's StartWorkButton and the
composer's CodingStatusRow now use the same dialog, eliminating the duplicated
UI.
The shared dialog keeps the sidebar version's full feature set:
- BaseBranchPicker (filterable base branch combobox)
- Convert mode (check out an existing branch into a worktree)
- Sanitized branch name input
The coding row passes repoPath (from cwd) and onOpenWorktree (which carries
the composer draft to the new session) so the unified dialog works everywhere
there's a repo, not just inside an entered project.
Switching between chat sessions in the desktop app froze for up to ~1–2s on
large transcripts. Profiling the switch path surfaced three main-thread
blockers, fixed here minimally and without changing behavior.
1. JSON.stringify deep-compare (worst case). chatMessagesEquivalent compared
message parts with JSON.stringify(a) === JSON.stringify(b) on every switch.
On image-/large-blob-bearing transcripts this serialized every part twice
and cost well over a second. Replaced with a structural compare that never
stringifies: array-level identity fast-path, per-part reference fast-path,
then type-aware field comparison. The compare's only consumer asks "did the
transcript change, should I setMessages?", so it is deliberately
conservative — a false-negative just causes one extra idempotent
setMessages, while a false-positive (the unsafe direction) is avoided.
2. Scroll-settle loop. thread-list ran a requestAnimationFrame settle loop up
to 90 frames (or 5 stable frames) on every sessionKey change, each frame
forcing a synchronous layout read + write — racing the markdown paint for
up to ~1.5s. A normal synchronous switch stabilizes within a couple
frames, so the ceiling is now 2 stable frames / 15 max.
3. Synchronous first paint of up to 300 parts. On switch, thread-list reset
the render budget to the full RENDER_BUDGET=300, so up to 300 parts went
through markdown + shiki syntax-highlighting synchronously on the switch
commit. It now paints a small FIRST_PAINT_BUDGET=60 first, then bumps to
the full 300 in a requestAnimationFrame after the first commit.
Salvaged from PR #49807 by professorpalmer — re-applied to the restructured
file layout (use-session-actions/utils.ts, thread/list.tsx) and tests merged
into the existing utils.test.ts.
Co-authored-by: Cary Palmer <professorpalmer@users.noreply.github.com>
The sidebar working dot didn't update for background sessions until the
user opened them. Two coupled causes:
1. The gateway's session.info event payload omitted stored_session_id,
so the desktop app had no way to map a background session's runtime
id to its stored id. Without the stored id, setSessionWorking(null,
...) was a no-op — the $workingSessionIds atom never updated.
2. The running→busy transition in the session.info handler was gated on
`apply` (active session only). The gate correctly scopes view-only
side effects (setCurrentModel, setCurrentCwd, etc.) to the focused
chat, but the per-session busy state drives the sidebar indicator and
must reach every session. updateSessionState only mutates the
per-runtime cache entry, and syncSessionStateToView already guards
the view publish to the active session, so ungating is safe.
Fix: add stored_session_id to _session_info() in tui_gateway/server.py,
add the field to GatewayEventPayload, pass it to updateSessionState in
the session.info handler, and ungate the running→busy transition.
react-router v7's HashRouter wraps every route state update in
React.startTransition() by default. In React 19's concurrent renderer,
transitions are non-urgent — React can yield mid-render and come back
later. When the app is under load (streaming token deltas, gateway
events, store updates from active sessions), those higher-priority
updates keep interrupting the transition, starving the route change commit.
This matches every symptom of the session-switch lag:
- Main thread is free (animations run, clicks work) — startTransition
defers, it does not block
- navigate() does not take effect for seconds — the transition keeps
getting interrupted by higher-priority updates
- Worse under load — more concurrent re-renders = more interruptions
- The whole UI (sidebar + main pane) does not update — the entire route
change is one transition, so nothing commits until it finishes
Pass useTransitions={false} to HashRouter so route state updates are
synchronous at default React priority instead of deferred transition
priority. navigate() now commits and paints immediately.
See: react-router v7 chunk-BIP66BKV.js HashRouter implementation.
Reassert the persisted webContents zoom after BrowserWindow moved, covering Windows monitor transitions where Chromium recalculates display scaling and drops the user-selected zoom.
Rebased onto current main, where the electron test harness migrated from
node:test to vitest (test:desktop:platforms = `vitest run --project electron`,
auto-discovering electron/*.test.ts). Swap the node:test import for vitest and
drop the .ts-extension import hack; the obsolete package.json node --test list
edit is dropped in the cherry-pick resolution since vitest auto-discovers.
Co-authored-by: Gille <4317663+helix4u@users.noreply.github.com>
selectModel in use-model-controls captured activeSessionId as a closure
prop, but the actions bag in wiring.tsx mutates in place to keep a stable
identity for memoized surfaces. The modelMenuContent useMemo captures
selectModel once when the gateway first opens (before any session is
active) and never re-evaluates, so clicking a model in an existing thread
goes through a stale closure with activeSessionId=null — the pick is
treated as UI-only, config.set is never sent, and the next session.info
event clobbers the optimistic update back to the session's real model.
Drop the activeSessionId prop entirely. All three callbacks now read
$activeSessionId.get() live from the store, matching the pattern
refreshCurrentModel already followed. This is the correct contract for
the actions bag's in-place mutation: callbacks read live state from the
store, not from captured props.
Guard staged node-pty ASAR path rewrites so already-unpacked paths are
not rewritten twice. Normalize spawn-helper to mode 0755 in both the
prebuild and locally compiled build/Release staging paths.
Add behavioral coverage for both unpacked path forms and both helper
layouts.
Co-authored-by: zhouwei <zwcf5200@163.com>
Co-authored-by: liuhao1024 <sunsky.lau@gmail.com>
The CI change classifier routes package.json / package-lock.json /
.ts/.tsx changes to the frontend lane, not the Python lane. Four
Python tests asserted about these JS-side artifacts, so a PR touching
only those files would skip the Python suite — the regression goes
green on the PR and red on main (where the classifier fails open).
Ported all four to vitest so they run in the correct CI lane:
tests/test_package_json_lazy_deps.py
→ apps/desktop/electron/package-json-lazy-deps.test.ts
(camofox is lazy, agent-browser is eager, lockfile clean)
tests/test_desktop_electron_pin.py
→ apps/desktop/electron/desktop-electron-pin.test.ts
(electron dep is exact, matches build.electronVersion, lockfile agrees)
tests/test_assistant_ui_tap_compat.py
→ apps/desktop/electron/assistant-ui-tap-compat.test.ts
(@assistant-ui cluster shares one tap version + semver helper)
tests/test_dashboard_sidecar_close_on_disconnect.py
→ web/src/lib/chat-sidebar-session-params.test.ts
(sidecar session.create opts into close_on_disconnect + profile)
The ChatSidebar test was regex-matching .tsx source text (the
source-reading anti-pattern). Extracted sidecarSessionCreateParams()
from the component's effect into an exported pure function so the
test calls real code instead of pattern-matching a string.
Verified: 8 electron tests + 76 web tests pass; both typecheck clean.
The hoisted shared eslint config catches pre-existing no-useless-escape
and no-control-regex errors in apps/desktop that were only fixed in web/
in the previous commit.
- no-useless-escape: remove unnecessary \) escapes inside character classes
- no-control-regex: add eslint-disable-next-line comments for intentional
\x1b terminal escape byte matching (same pattern as web/src/lib/pty-mobile-input.ts)
apps/shared had lint:fix but not the 'fix' alias that other workspaces
have. The js-tests check job runs 'npm run fix' as a second step, so
this workspace was failing with 'Missing script: fix'.
* feat(desktop): add background-task indicator to sidebar session rows
A session with a live terminal(background=true) process but no active LLM
turn now shows a pulsing gray dot in the sidebar — distinct from the accent
pulse of an active turn and the steady amber/green of needs-input/unread.
New $backgroundRunningSessionIds computed atom joins
$backgroundStatusBySession (runtime-keyed) with $sessionStates
(runtime→stored) to produce stored session ids the sidebar row can match
against — same pattern as $attentionSessionIds and $unreadFinishedSessionIds.
Also refactors SidebarRowDot from a 3-branch if-else chain into a
table-driven priority array of DotState entries. Each state declares its
active flag, className, ariaLabel, and title in one place — adding a new
indicator state is now one array entry instead of another conditional.
* fix(desktop): keep pulse-dot before:bg-* static so Tailwind emits it
The PING() helper interpolated the color into `before:bg-${color}`, but
Tailwind v4 only generates utilities it finds as complete static strings — a
template-composed `before:bg-(--ui-accent)` / `before:bg-muted-foreground/50`
is never emitted, so both pulse rings (working + new background) lost their
halo color. Make PING a static scaffold and write the before:bg color inline
per variant.
---------
Co-authored-by: Brooklyn Nicholson <brooklyn.bb.nicholson@gmail.com>
SessionInfo already carries git_branch from the backend, but neither the
ctrl-k command palette nor the sidebar search function included it in
their matching fields. Typing a branch name matched nothing.
- session-search.ts: add session.git_branch to sessionMatchesSearch
- command-palette/index.tsx: thread git_branch through SessionEntry and
into the keywords array for both sessions and archived sessions groups
- session-search.test.ts: cover full, partial, and "main" branch matches
* fix(desktop): un-minimize zone when revealing a collapsed tool panel
`revealTreePane()` fronted the pane's tab but never un-minimized its zone
when the pane lived in a shared zone (terminal + logs, or a tool panel
stacked with the workspace). The shared-zone branch of `setPaneCollapsed`
routes opens through `revealTreePane` instead of `toggleTreeGroupMinimized`,
so the zone stayed collapsed and the terminal appeared to "close but not
open" on Ctrl+` — and tab clicks needed a double-click because the first
click's `restoreTreePane` → opener → listener → `revealTreePane` chain
didn't un-minimize either.
The fix: `revealTreePane` now restores a minimized zone before fronting
the pane, chaining the un-minimize + activate into a single `commit` so
the second op sees the updated tree.
* fix(desktop): side collapse in column-root layouts + restore after zone-menu minimize
Two follow-up fixes for the panel layout:
1. Ctrl+B / Ctrl+J sidebar toggles didn't work in the Terminal deck (and
Quad) layout. The side-collapse system (treeSideOfPane, paneRootSide,
layoutHasRootSide, and the renderer's semanticSides) only operated on the
ROOT split when it was a row — but Terminal deck's root is a column, so the
side columns (sessions/files) nested inside a child row were invisible to
the collapse system. Extracted a rootRow() helper that finds the row
containing main (the root itself for row layouts, or the row child of a
column root), and a rootRow prop propagated through TreeNode → TreeSplit so
semanticSides fires on the right split regardless of root orientation.
2. Clicking the "logs" tab in a minimized terminal/logs zone needed a
double-click when the zone was minimized via the zone menu (right-click →
minimize), not the toggle. restoreTreePane called the opener
($logsOpen.set(true)) and returned early — but when the store was already
true, nanostores don't fire the listener, so setPaneCollapsed/revealTreePane
never ran and the zone stayed minimized. Now restoreTreePane also
un-minimizes directly + calls revealTreePane when the zone is still
minimized after the opener runs.
Reasoning ("Thinking") rendered through MarkdownTextContent with a smooth
typewriter reveal. TextMessagePartProvider mints a fresh part object on every
text change, and useSmooth resets its reveal to empty whenever the part
identity changes — so each reasoning delta restarted the animation from the
first character (h / hell / hello wo ...). Token-streaming reasoners
(R1/Qwen/GLM/Claude thinking) fire a delta per token and flash hard; GPT-5's
coarse reasoning summary updates too rarely to notice, which is why it looked
fine.
Drop smooth on the reasoning path so it plain-appends, exactly like the
assistant answer already does. Removes the now-dead smooth plumbing too.
Generalize the clarify opt-out into an UNBOUNDABLE_TOOLS set so a run
containing image_generate also stays a plain, fully-visible stack instead
of collapsing into the bounded window, where the max-height + gradient mask
clipped the image the same way it clipped clarify forms.
When an agent turn finishes while the user is viewing a different
session, the sidebar now shows a steady green dot on that session —
distinct from the blue pulsing dot of a running turn and the gray dot
of an idle one. Opening the session clears the indicator.
The unread state is ephemeral renderer-side state, matching the
existing $workingSessionIds and $attentionSessionIds pattern: no
persistence, no backend involvement, wiped on gateway-mode switch.
Co-authored-by: liuhao1024 <liuhao1024@users.noreply.github.com>
Co-authored-by: dschnurbusch <dschnurbusch@users.noreply.github.com>
Co-authored-by: Flow Digital Inc. <flow-digital-ny@users.noreply.github.com>
Follow-up hardening on top of #64158 (@DavidMetcalfe):
Backend (the root-cause fix):
- hermes_cli/moa_config.py: add validate_moa_payload() — strict write-time
counterpart to the deliberately tolerant normalize_moa_config(). Flags
half-filled slots, empty reference lists, recursive moa slots, naming the
exact preset/slot.
- hermes_cli/web_server.py: PUT /api/model/moa validates before normalizing
and returns 422 with the specific problems instead of silently swapping the
user's preset for hardcoded defaults (#64156). Also declares
fanout / reference_max_tokens / reasoning_effort on the Pydantic payload so
client round-trips no longer erase hand-set values.
Desktop:
- Replace sanitize-then-send with hold-while-incomplete: the debounced
autosave is deferred (not repaired) while any slot is half-filled, and
flushes once the model pick completes the edit. Mid-edit UI state is never
repainted by a save response (generation guard covers held edits too).
- updateMoaSlot only clears the model when the provider actually changed.
- Explicit preset ops (set default / add / delete) cancel the pending
autosave and invalidate in-flight responses so the two writers can't race.
- Stable row keys (preset+index) so mid-edit rows don't remount; cleared
model shows the 'Model' placeholder instead of vanishing.
Both TS clients' MoaConfigResponse types now declare the round-tripped
fields (fanout, reference_max_tokens, reasoning_effort).
Tests: 12 new backend unit tests (validate_moa_payload contract incl.
validate/normalize agreement), 3 new web_server endpoint tests (422 on
half-filled ref/aggregator, fanout round-trip), 3 new desktop vitest cases
(autosave held while half-filled, flush on completion, same-provider
reselect no-op). E2E validated against a live TestClient with isolated
HERMES_HOME: bug sequence now 422s with config untouched.
Fixes#64156
Three fixes in model-settings.tsx:
1. Filter incomplete slots before autosave: sanitizeMoaRefsForSave() strips
reference slots with empty model before any autosave (the 600ms debounce
was sending half-filled provider-but-no-model slots to the backend, where
_clean_slot rejects them and _normalize_preset falls back to hardcoded
defaults). Presets with zero valid refs keep their empty reference_models
array rather than being silently dropped. The aggregator slot is also
sanitized when its model is empty.
2. Add withActive() to MoA provider dropdowns: the reference and aggregator
provider Selects filtered to authenticated-only, so unauthenticated
current values (e.g. openai-codex) rendered blank. Mirror the existing
pattern from the model Select.
3. Add generation counter to scheduleMoaSave(): stale save responses could
overwrite newer state. Bump a counter on each save and skip setMoa/setError
if a newer save was scheduled in the meantime.
ReviewDirRow never rendered a DiffCount, so collapsed folders gave no
indication of the additions/deletions inside them. The tree builder
already aggregates added/removed onto directory nodes (verified by
tree-data tests) — this just renders them, matching the file rows.
CI runners have no global git identity. The remote repo seed commit
needs inline -c user.email/user.name flags, matching the pattern
already used by ensureGitRepo.
When "new worktree" branches off a remote-tracking ref like origin/main,
`git worktree add -b <branch> <dir> origin/main` auto-sets upstream
tracking (branch → origin/main), producing `branch:origin/main` in branch
listings. The user wants a standalone local branch — like `git checkout
origin/main && git checkout -b branch` — not one silently wired to the
remote. Add `--no-track` when the base is an `origin/` ref. Local branch
bases are unaffected (they never triggered tracking).
Extract shared hermes_cli/input_sanitize.py (bracketed-paste wrapper stripping
and terminal ~[[e artifact suffix collapse) and wire it into prompt.submit
and the Desktop composer so corrupted user text is cleaned before
messages.content is persisted.
