Normalizes bare ---/+++ headers and paths before rendering
Repairs loosely formatted hunk bodies for patch display
Recounts hunk ranges so diff headers stay accurate
- Migrate sidebar session groups, git changes panel, virtualized code
blocks, and JSON tree viewer from virtua to @tanstack/react-virtual;
virtua remains only inside the Pierre diff viewer integration
- Sidebar: preserve scroll position when virtualization enables
mid-session (enable only once the ancestor scroll element is resolved,
seed initial offset from its live scrollTop, render plain rows for the
single pre-paint frame); disable native scroll anchoring on the
sessions scroller; keep row spacing identical between plain and
virtualized modes; absolute row positioning so variable-height rows
cannot drift past the container
- Chat: expand tool/thinking blocks downward by only adjusting scroll
for rows growing above the viewport; raise the desktop history-load
lead to 1.5 viewports so prepends land above the visible area
- Git changes: compute the prefetch window from the first visible row,
skipping overscan rows above the viewport
- Sidebar rows: make the whole highlighted row area clickable, guarded
against double-firing from interactive children
Render a streaming Thinking block inline instead of inside a capped,
independently-scrollable max-height box (the cap now applies only to finished
thinking, for compact review). The nested scroll box was capturing the wheel and
auto-pinning to its own bottom, so the chat could not be scrolled while thinking
streamed. With it gone the chat's own auto-follow owns the scroll.
Two auto-follow refinements make that solid:
- Direction-aware bottom-zone re-engage: scrolling UP into the bottom spacer zone
no longer re-arms follow (which the next growth would yank back). Follow resumes
only when the user arrives at the bottom by scrolling down, is already
following, or is at the true bottom. Kills the dead-zone fight near the bottom.
- Animation guard: while a Thinking block COLLAPSE animation runs, transient
geometry / trailing async scroll events are treated as our own and never
trigger a false release. Genuine user gestures still release instantly.
Gate passive auto-follow on active (working/settling) state so idle layout
churn from virtualizer re-measurement no longer re-pins the viewport to the
bottom. Render default-open tool bodies synchronously on mount so the
virtualizer measures the real row height up front instead of growing a frame
later and lurching scroll past several messages.
* fix(chat): preserve tool duration across session switches
Fix#1636: ToolPart.tsx reset pinnedTime to empty on unmount/remount,
causing LiveDuration to not render on first paint. Now initializes
pinnedTime from server-provided time?.start/time?.end in the useState
initializer, eliminating the one-frame gap.
* fix(sync): preserve tool state.time in materialization merge
---------
Co-authored-by: Leonid Skorobogatyy <bash@opencode.itc.local>
Reworks the chat and session-sidebar render paths to cut render cascades, memory
churn, and UI jank on large sessions and big session trees. Behavior is preserved;
the changes are about *when* and *how much* the UI re-renders.
## Chat streaming
- Freeze the streaming message's parts in the bulk turn projection during streaming,
and re-inject live parts only in an isolated tail leaf, so a ~60/sec delta stream
no longer re-runs the whole-session projection or re-renders unrelated rows.
session with referential reuse of unchanged turns.
- Memoize message rows with field-aware comparators instead of reference equality.
- Replace the manual child-session polling in the task tool with the live SSE
stream + a one-shot load, removing a fetch/settle state machine.
## History loading & scroll
- Load an initial page fast, then prepend one older page in the background so the
scroll container has headroom and "load older on scroll-up" fires before the user
hits the absolute top.
- Compensate scroll synchronously (in a layout effect, before paint) for prepends —
including background prepends that don't originate from a user scroll — so the
viewport stays stable instead of judder-correcting on the next frame.
## Markdown rendering
- Render markdown synchronously *styled* on first paint (paragraphs, lists, code
cards, tables, inline code) instead of raw escaped text; the async pass then only
upgrades syntax-highlight colors. Eliminates the flash of full-width raw text.
- Load KaTeX CSS eagerly with the main bundle instead of inside the lazy markdown
chunk, avoiding a late stylesheet injection on first render.
## Sidebar
- Hoist per-row recursive tree walks out of row comparators into per-group
precomputed sets/keys; batch live-session lookups into a single map; add a
group-level memo boundary.
- Isolate rename drafts so per-keystroke typing doesn't repaint the row tree.
## Sync layer
- Add a staleness guard so a slow message fetch can't repopulate a session the user
navigated away from.
- Throw on fetch failure for authoritative loaders so a transient blip can't read as
an empty server response.
## Cleanup
- Remove dead code (unused hooks, params, duplicated inline types) surfaced while
reworking the above.
## Known issue
- A rare, purely cosmetic first-paint width flash can still appear on large sessions;
it has no behavioral or data impact and is tracked for a follow-up runtime trace.
The Prism syntaxTheme prop is no longer read after code highlighting moved to
the Shiki worker. Remove the now-dead prop threading and its source.
- Drop syntaxTheme from interfaces, destructures, prop passes, and React.memo
comparators across ChatMessage, MessageBody, ProgressiveGroup, ToolPart,
TurnActivity, ToolOutputDialog, and ChatInput.
- Drop the unused _syntaxTheme param from renderWebSearchOutput.
- Remove the dead generateSyntaxTheme usages (ChatMessage memo, PlanView
unassigned memo) and delete the now-unimported syntaxThemeGenerator module.
Route all non-markdown code highlighting through the off-main-thread Shiki
worker, removing react-syntax-highlighter and prismjs entirely.
- Extend the worker with highlightLines: tokenize a whole block once and return
per-line inner HTML, so per-line layouts (diffs, gutters, virtualization) make
one worker call instead of one highlighter per line.
- Add shared WorkerHighlightedCode (whole-block) and useWorkerHighlightedLines
(per-line) primitives. Colors resolve via the --md-syntax-* CSS variables, so
theme changes never re-highlight.
- Migrate all 12 react-syntax-highlighter call sites: PermissionCard,
ToolPart, ContextSidebarTab, ToolOutputDialog (whole block) and
DiffPreview/WritePreview (per line).
- Migrate VirtualizedCodeBlock off prismjs to the worker, keeping virtua
virtualization; whole-block tokenization also restores cross-line syntax
context that per-line highlighting lost.
- Drop react-syntax-highlighter (+types) from ui and web, prismjs (+types) from
ui, and the orphaned create-element type shim.
Thread onShowPopup from MessageBody through AssistantTextPart into the
markdown renderer so clicking a rendered mermaid diagram in assistant
messages opens the existing pan/zoom fullscreen preview dialog.
- Bump mobile line-height on tool/reasoning rows from leading-4 to leading-5
so descenders (g, y, p) are no longer clipped by truncate overflow
- Show the tool icon (not the chevron) for collapsed expandable tools on
mobile, matching reasoning rows; chevron now appears only when expanded
Replace useDirectoryStore.currentDirectory with useEffectiveDirectory() in
both TaskToolSummary and ToolPartContent to align the directory key used for
ContextPanel tab storage/lookup. Previously ToolPart used the global project
root while ContextPanel resolved session/worktree-scoped directories via
useEffectiveDirectory(), causing a key mismatch that left the iframe blank
when opening sub-tasks from chat messages.
Agent @mentions in markdown use the primary accent instead of generic link color
Mentions render without external URL favicons
Markdown mode now matches plain text mention styling
* feat: add draw.io diagram editor integration
Embed draw.io editor via react-drawio (MIT, zero deps) for inline
editing of .drawio files. Changes auto-save to disk. Includes
inline editor in FilesView with Visual/Source toggle, dark mode
support, template picker for new files, and chat file attachment
integration.
* fix: debounce diagram autosave to prevent reload loop
* fix: ignore watcher-triggered xml prop changes to prevent reload loop
* fix: remove auto-save-to-disk, add manual save button for diagrams
Autosave writes triggered file watcher cascade that reloaded the
draw.io iframe and reset zoom. Replaced with explicit Save button
in the toolbar (floppy disk icon). Editor XML is stable on mount
and ignores watcher-triggered prop changes.
* fix: remove auto-save write from DiagramView, add save button
* fix: hide draw.io save/exit buttons in editor
* fix: also hide save-and-exit button
* fix: brighten save button styling, add saved confirmation
* fix: remove autoSaveStatus toggle on diagram save to prevent toolbar collapse
* fix: add local save confirmation state for diagram button
* fix: remount drawio iframe on theme change, persisting XML across mounts
* fix: clear persisted xml on mount to prevent leaking between files
* fix: initialize dark mode synchronously, preserve edits across theme remount
* fix: auto-focus drawio iframe on mount/theme-change for keyboard shortcuts
* fix: add diagram i18n keys to Traditional Chinese locale
* fix: restore upstream HMR host and LAN address support
* fix: load sub-agent sessions on bootstrap for sidebar visibility
Two-phase session load: first fetch root sessions (for accurate
sessionTotal), then fetch all sessions and include child sessions
(sub-agent delegations). This ensures sub-agent sessions appear
in the sidebar immediately instead of relying on the async global
session store.
* remove opencode-drawio from PR branch
* fix: atomic file writes to prevent concurrent read/write truncation
Three-layer defense against the O_TRUNC race:
1. Write side (server): replace direct writeFile with write-to-temp-
then-rename. fs.rename is atomic on POSIX.
2. Read side (server): retry up to 3 times with 50ms backoff when
readFile returns empty but stat reported non-zero size.
3. FilesView client: refuse to save empty draftContent when the
original fileContent was non-empty.
* fix(dev): clean up orphaned OpenCode processes on Ctrl+C
* fix: allow empty file saves, log warning instead of blocking
Replaces the hard block on saving empty content with a console.warn.
The atomic write + read retry on the server side handle the O_TRUNC
race properly. The previous guard caused a UX regression by silently
preventing users from clearing a file and saving.
* fix: remove time window from sub-agent fallback for live tasks
While a task tool is active, the fallback now matches any session
with the correct parentID regardless of creation time. This allows
late-appearing child sessions to be found when the OpenCode server
is slow or the SSE event pipeline is delayed. The time window is
still applied once the task tool has completed, as a final sanity
check.
* fix: three diagram editor bugs from Greptile review
1. stableXmlRef now resets when xml prop changes — switching
between .drawio files renders the correct content.
2. Focus effect only runs on mount, not on isDark changes —
theme toggle no longer steals keyboard focus 600ms later.
3. saveDiagram updates xml state after writing — dirty-check
guard works correctly for subsequent saves.
* fix: route session.created SSE events to correct directory
Three-layer fix for sub-agent sessions not appearing in sidebar and
inline chat:
1. protocol.js: parseSseEventEnvelope now extracts directory from
properties.info.directory (where session.created/updated events
carry it) in addition to properties.directory. WS frames relayed
to the browser now carry the real directory instead of 'global',
so child sessions routed to the correct directory store.
2. event-pipeline.ts: same fallback in resolveEventDirectory for
defense-in-depth when SSE events bypass the WS relay.
3. resolveFallbackTaskSessionId.ts: time window lower bound now
allows 2s grace before taskStartTime to accommodate server timing
jitter (child session creation timestamps consistently precede the
tool's recorded start by ~6-9ms), fixing the 'Open subtask'
button not rendering in OpenChamber's inline chat.
* fix: sub-agent sidebar visibility, file zeroing guard, inline badge fallback
- Sync watchdog: periodic child session discovery poll (every 15s) detects
sessions created by other OpenCode instances, triggers parent materialization
- protocol.js: parseSseEventEnvelope extracts directory from
properties.info.directory for session.created/updated events
- event-pipeline.ts: same fallback in resolveEventDirectory for defense-in-depth
- resolveFallbackTaskSessionId: don't require taskStartTime (cross-OpenCode);
pick most recent child when multiple idle candidates exist
- readTaskSessionIdFromOutput: parse <task id="ses_xxx"> format from output
- FilesView: reinstate empty-draft guard (block save when draftContent='' but
fileContent had content) to prevent file zeroing on tab switch
* Fix diagram autosave reload loop
* Highlight drawio files as XML
* Use diff-compatible highlighting for drawio files
* Restore drawio file icon mapping
* Stabilize drawio source preview toggle
---------
Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>
* fix: make upstream sync actions target the selected remote
Ensure fetch and pull actually honor upstream selection so fork maintenance works from the Git sidebar, and surface upstream branch status alongside the primary origin-tracking indicators.
* feat: add Windows Electron desktop foundation
* fix(electron): stabilize Windows desktop packaging
* fix(electron): stabilize Windows desktop chrome
Use native Windows titlebar behavior with an Alt-accessible hidden menu, and harden Windows dev command launching so the desktop app follows platform conventions.
* fix(electron): stabilize Windows dev startup
* fix(electron): clarify desktop artifact names
* fix(electron): harden Windows desktop release and launch
* fix(electron): address Windows release review
* fix(electron): point updater and release links to org repo
* Fix Windows settings persistence fallback
* Fix Windows Electron dev startup
* Add Windows Electron window controls
* Fix Windows Electron install and opencode launch
* fix: resolve git status for repositories without upstream
Fixes repository detection stuck on Checking repository
Handles git status when no upstream is configured
Adds regression coverage for git status loading
* Add Windows app menu button
* fix: preserve file editor line endings
* ci: add desktop release smoke workflow
---------
Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>
Safely falls back to raw patch text for invalid diffs
Protects individual tool parts from crashing the chat
Covers malformed apply_patch and edit diff cases
Improve chat session switching and history pagination, with most of the aggressive limits scoped to the VS Code webview where the freezes were observed.
Session history loading and pagination:
- Reduce the VS Code message page size to 30 records so switching sessions does not immediately hydrate large histories into the webview.
- Keep manual Load older messages in VS Code fixed at 30 records per request instead of growing the request size over time.
- Add a bounded VS Code initial-tail expansion path from 30 to 50, 80, and 120 records only when the initial page has no user-message turn boundary, preventing large final turns from rendering as an empty chat.
- Lower the normal web message page size from 200 to 150 for a mild shared optimization without adopting the aggressive VS Code limits.
- Make session pagination metadata reactive per session so ChatContainer receives cursor updates from materialization and reconnect paths without requiring a switch away and back.
- Write pagination metadata before publishing newly materialized messages so the first render sees the correct has-more state.
- Store cursor information from direct materialization and reconnect message fetches in the shared session prefetch metadata cache.
VS Code cache and memory pressure reductions:
- Use a shared per-directory session recency map so cache eviction is based on app-level recency instead of whichever useSync instance happened to run.
- Limit VS Code warm session cache retention to 4 sessions and evict heavy inactive message caches after switching away from a large session.
- Disable sidebar session prefetch in VS Code because warming extra sessions was increasing webview memory and GC pressure during navigation.
- Remove dropdown background message prefetch so opening the switcher does not start additional session materialization work.
- Drop cached session-message-record snapshots when evicting session data so stale derived records do not remain after the raw session cache is cleared.
- Add bounded LRU caching for session message record snapshots, with much smaller VS Code limits and a VS Code cap that avoids caching snapshots above 30 messages.
- Bound the turn-window model cache in VS Code and avoid caching turn models for sessions above the VS Code message-page size.
Chat render-path reductions:
- Reuse ChatContainer's already-materialized message records in plan detection instead of adding a second active-session message subscription.
- Add a no-op guard when marking session plan availability so repeated detections do not create new Map references and fan out renders.
- Add no-op guards for session switcher and dropdown open state updates to avoid unnecessary store updates and renders.
- Convert several session-specific hooks to useSyncExternalStore with empty-session no-subscribe behavior so empty IDs do not subscribe to broad store updates.
- Remount the chat viewport when the current session changes, isolating per-session viewport and list state.
- Change the virtualized message-list fallback to render only a tail window when the virtualizer has not produced rows yet, instead of rendering an entire large history.
VS Code layout and header improvements:
- Remove the broad useSessions subscription from the VS Code layout header path and subscribe only to the active session title and initial-session existence.
- Unmount the compact VS Code session sidebar when the user is in chat view instead of keeping the hidden session list mounted and subscribed.
- Compute the latest assistant model and latest context-token usage in a single reverse scan of current-session messages instead of scanning the same list twice.
- Remove switcher git-status warmup work so the switcher reads already-loaded branch labels without starting extra background git status requests.
Markdown and file-reference safeguards:
- Skip expensive syntax highlighting for very large code blocks, with a 200-line cap in VS Code and a softer 1200-line cap in web.
- Add an LRU cap to file-reference stat lookups so the cache cannot grow without bound across many rendered messages.
- Limit the number of file references annotated per render to 40 in VS Code and 200 in web to prevent large assistant outputs from spawning too many stat checks.
- Clear file-link annotations when file-reference mode is disabled so stale attributes and handlers do not remain on previously annotated nodes.
Assistant-message action and preview reductions:
- Skip preview URL scanning on VS Code, mobile, and mini-chat surfaces so assistant text and tool output are not scanned where the preview action is unavailable.
- Skip Save-as-Plan project lookup on VS Code, mini-chat, and mobile surfaces.
- Hide Save-as-Plan and Start MultiRun assistant-message actions on VS Code, mini-chat, and mobile surfaces.
- Resolve the current session directory on demand for assistant actions instead of subscribing each assistant message to the full session list.
Tool and task rendering optimizations:
- Prefer finalized task metadata summaries without fetching child-session messages when the summary is already present.
- Avoid polling or final-fetching task child sessions once a final metadata summary is available.
- Use VS Code-specific task child fetch limits of 30 records for initial, active, and idle fetches.
- Parse diff stats by scanning patch text line-by-line instead of splitting large patches into arrays.
- Count write-tool lines by scanning content instead of allocating a split array for large files.
- Avoid trimming large patch strings just to test whether they contain content.
- Memoize diff and write statistics so unchanged tool parts do not recalculate them on every render.
VS Code bridge improvements:
- Return JSON and text proxy responses through the VS Code bridge as bodyText instead of base64 so the webview avoids synchronous base64 decoding for common API responses.
- Keep binary responses on the base64 path while making bodyBase64 optional in the bridge contract.
- Strip content-length, content-encoding, and transfer-encoding headers from proxied responses because the bridge reconstructs the Response body.
Validation:
- bun run type-check
- bun run lint
- bun run vscode:build
Shows loaded skills in slash autocomplete with clear type badges
Stabilizes keyboard navigation across autocomplete menus
Fixes skill link rendering and skill autocomplete scrolling
Use the same spring height animation for thinking and tool details
Reduce mismatch between auto-collapse and manual collapse behavior
Keep existing expanded state behavior unchanged
Add smooth expand and collapse transitions to tool details
Match the existing thinking block animation style
Keep existing default expanded states unchanged
* feat: add collapsible reasoning traces with animated labels
* feat(ui): redesign reasoning blocks with merged collapsible Thought view
- Replace per-part reasoning blocks with a single merged block per turn
(VSCode Copilot pattern), controlled by new `groupReasoningBlocks` store flag
- `ReasoningTimelineBlock` redesigned: chevron toggle, summary preview on
collapsed header, 'Thinking'/'Justification' label when expanded, BusyDots
while streaming, auto-scroll to bottom during live streaming
- Short texts (< 120 chars) render inline without a toggle
- Summary now strips markdown and truncates at a word boundary with ellipsis
- New `MergedReasoningPart` component merges all reasoning parts for a message
into one block at the position of the first reasoning part
- `defaultExpanded` prop lets callers override initial expand state
- Remove `.thinking-dot` CSS animation (replaced by BusyDots component)
- Fix reasoning markdown font-size: use `--text-markdown` instead of `--text-meta`
* refactor(ui): scope working phrases inside useAssistantStatus and simplify reasoning status
- Move WORKING_PHRASES array and getRandomWorkingPhrase() inside the hook
so they are no longer exported (were only consumed by ReasoningPart which
no longer needs them)
- Change the 'reasoning' activity status text from a random working phrase
to the deterministic string 'thinking' — matches the new UI label
* test(ui): expand ReasoningPart tests for new collapsible and summary behavior
- Update baseline test to use text long enough to trigger the collapsible
path (short texts now render inline) and assert on the correct aria markup
- Add test for 'Justification' label when pre-expanded via defaultExpanded
- Add test for 'Thinking' label for the thinking variant when expanded
- Add test verifying summary is a word-boundary-truncated excerpt ending with
an ellipsis character
* i18n: rename 'Reasoning Traces' to 'Thinking Blocks' and add thought key
- Rename settings label from 'Show Reasoning Traces' → 'Show Thinking Blocks'
across all supported locales (en, es, ko, pl, pt-BR, uk, zh-CN)
- Add `chat.reasoningTrace.thought` key to all locales (used by merged
reasoning block header in completed state)
* feat(ui): add collapsibleThinkingBlocks setting with full persistence wiring
- New boolean store field `collapsibleThinkingBlocks` (default true) with
`setCollapsibleThinkingBlocks` action; persisted to localStorage
- Threaded through DesktopSettings, SettingsPayload (API types), desktop
persistence (sanitize + apply), web appearance persistence, appearance
auto-save watcher, and server-side settings-helpers sanitize/format
- Server defaults to true when the field is absent in formatSettingsResponse
- MessageBody reads the flag: false → render reasoning as plain AssistantTextPart;
true → existing collapsible/merged block path
* feat(settings): expose Collapsible Reasoning Blocks toggle in visual settings
Add a checkbox under the 'Show Thinking Blocks' row (visible only when
showReasoningTraces is enabled) that toggles the collapsibleThinkingBlocks
preference. Follows the existing toggle pattern: div role=button, keyboard
handler for Enter/Space, Checkbox primitive, aria-pressed attribute.
* i18n: revert showReasoningTraces label rename and add collapsibleThinkingBlocks strings
- Revert 'Show Reasoning Traces' → 'Show Thinking Blocks' rename (the
collapsibleThinkingBlocks toggle is now a separate control, so the parent
label stays as 'Reasoning Traces' for clarity)
- Add `collapsibleThinkingBlocks` / `collapsibleThinkingBlocksAria` strings
across all seven supported locales (en, es, ko, pl, pt-BR, uk, zh-CN)
* test(server): add settings-helpers coverage for collapsibleThinkingBlocks
- Verify sanitizeSettingsUpdate accepts boolean true/false and rejects
non-boolean values (string, number)
- Verify formatSettingsResponse forwards the value correctly for both true
and false, and defaults to true when the field is absent
* fix(ui): respect defaultExpanded prop and remove dead alwaysShowActions from ReasoningTimelineBlock
The useEffect on [isStreaming] was firing on mount and immediately calling
setIsExpanded(false) (since isStreaming is false for completed blocks),
overriding any defaultExpanded={true} passed by callers. The fix uses a
prevIsStreamingRef so the effect only collapses the block on a true→false
transition and is a no-op on initial mount.
Also removes alwaysShowActions from ReasoningTimelineBlockProps — the new
header design always shows the chevron, making the prop obsolete. The prop
was already absent from the component destructuring (a dead type entry) and
was silently ignored at runtime. Removed it from ReasoningPartProps,
MergedReasoningPartProps, and the two call-sites in MessageBody as well.
* chore: remove unused reasoningpresentation module and test
* fix(ui): polish collapsible reasoning block UI
---------
Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>
Adds animated reveals for file path tool descriptions
Keeps sorted mode tool animations working without extra chat gaps
Preserves file icons, truncation, and click behavior
Bohdan Triapitsyn