Neil 87f5c6cd03 perf(terminal): stop rebuilding parked-watcher keys on every overlay render (#16596)
* perf(terminal): stop rebuilding parked-watcher keys on every overlay render

Every mounted worktree's TerminalPaneOverlayLayer rebuilt its parked-watcher
synchronization key from scratch on every render: JSON.stringify of the whole
split-tree root per tab, then a second JSON.stringify pass that re-escaped that
already-serialized string. Two app-global subscriptions in the cold-parking
hook (pendingStartupByTabId, sleepingAgentSessionsByPaneKey) made any write for
any tab in any worktree trigger that render everywhere at once, so the cost
scaled with mounted worktree count.

- Memoize the store-derived half of the reconciliation key on the already
  shallow-stable selector output. The captured-pane half still recomputes per
  render because that registry mutates outside React.
- Replace the outer JSON.stringify of already-serialized fragments with a
  length-prefixed join, which is injective for arbitrary fragments and does no
  escaping pass.
- Narrow both global subscriptions to worktree-scoped, value-comparable keys.

Measured on a 12-worktree x 4-tab x 4-leaf-split model: 9.5 us -> 1.3 us of key
work per worktree render (7.3x), before counting the renders the narrowed
subscriptions now avoid entirely.

Key semantics are unchanged: no hash is introduced, only memoization of an
identical serialization and an injective replacement for the outer pass.

* refactor(terminal): narrow the park subscriptions with useShallow, not string keys

Review follow-up. zustand's `shallow` already compares Sets and plain objects
structurally and order-insensitively, so the encode-to-string / parse-back pair
each subscription carried was doing by hand what `useShallow` does for free.

- Restore the Set-returning `selectSleepingRecordParkExemptTabIds` and subscribe
  through `useShallow`. Drops the NUL separator, the `.sort()` that existed only
  to keep insertion order out of the key, the O(k^2) `includes` dedup, the parse
  helper and the caller's `useMemo` — and removes the ordering invariant that
  was enforced by a comment alone.
- Same for the pending-startup presence hook: `useShallow` over the presence
  record, keeping the frozen empty singleton for the zero-allocation steady
  state.
- Drop the `useMemo` around the reconciliation selector. `useShallow` returns a
  fresh closure every render regardless, so the memo bought nothing and its WHY
  comment described behaviour zustand 5 does not have. The memo that is the real
  fix here, `reconciliationStoreInputsKey`, is untouched.

Adds a narrowing case for a sleeping record this worktree can never resume,
which pins both the blocked-record exemption and the narrowing itself; it fails
against the pre-narrowing code (2 renders, expected 0).

Net -25 lines of production code.
2026-08-26 03:08:11 -07:00
2026-07-11 20:53:20 -07:00
2026-05-04 20:42:03 -07:00
2026-03-16 22:27:51 -07:00
2026-03-28 10:19:14 -07:00

Orca Orca

GitHub stars Total downloads across all releases License: MIT Join the Orca Discord Follow Orca on X Supported platforms: macOS, Windows, and Linux

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The AI Orchestrator for 100x builders.
Run Codex, ClaudeCode, OpenCode or Pi side-by-side — each in its own worktree, tracked in one place.

Download Orca

Orca desktop app running agents in parallel worktrees, with the Orca mobile companion app in the corner

Features

Mobile Companion

Monitor and steer your agents from your phone — get notified when an agent finishes and send follow-ups from anywhere.

iOS App Store · TestFlight · Android APK 0.0.44 · Docs →

Orca desktop with the mobile companion app

Parallel Worktrees

Fan one prompt across five agents, each in its own isolated git worktree — compare the results and merge the winner.

Docs →

Parallel worktree orchestration

Terminal Splits

Ghostty-class terminals with WebGL rendering, infinite splits, and scrollback that survives restarts.

Docs →

Terminal splits

Design Mode

Click any UI element in a real Chromium window to send its HTML, CSS, and a cropped screenshot straight into your agent's prompt.

Docs →

Embedded browser and Design Mode

GitHub & Linear, Native

Browse PRs, issues, and project boards in-app — open a worktree from any task and review without a context switch.

Docs →

GitHub and Linear task workflows in Orca

SSH Worktrees

Run agents on a beefy remote box with full file editing, git, and terminals — auto-reconnect and port forwarding included.

Docs →

Remote worktrees over SSH

Annotate AI Diffs

Drop comments on any diff line and ship them back to the agent — review, edit, and commit without leaving Orca.

Docs →

Annotate AI-generated diffs

Drag Files to Agents

VS Code's editor with autosave everywhere — drag files or images straight into an agent prompt.

Docs →

Drag files and images into an agent prompt

Orca CLI

Agents drive Orca too — script every workflow with orca worktree create, snapshot, click, and fill.

Docs →

Script Orca from the CLI

Also in the box:

  • Quick open — Search across worktrees, files, agents, commands, and repo context without leaving your flow.
  • Account switcher & usage tracking — See Claude and Codex usage and rate-limit resets, and hot-swap accounts without re-logging in.
  • Rich repo previews — Preview Markdown, images, PDFs, and repo docs in the workspace.
  • Computer Use — Let agents operate desktop apps and visible UI when a workflow needs real interaction.
  • Notifications and unread state — Know when an agent finishes or needs attention, then mark threads unread to come back later.
  • And many, many more — we ship daily, so this list is perpetually behind. The changelog is the real feature list.

Supported Agents

Works with any CLI agent — if it runs in a terminal, it runs in Orca.

Claude Code logo Claude Code   Codex logo Codex   Grok logo Grok   Cursor logo Cursor   GitHub Copilot logo GitHub Copilot   OpenCode logo OpenCode   MiMo Code logo MiMo Code   Amp logo Amp   OpenClaude logo OpenClaude   Antigravity logo Antigravity   Pi logo Pi   oh-my-pi logo oh-my-pi   Hermes Agent logo Hermes Agent   Devin logo Devin   Goose logo Goose   Auggie logo Auggie   Autohand Code logo Autohand Code   Charm logo Charm   Cline logo Cline   Codebuff logo Codebuff   Command Code logo Command Code   Continue logo Continue   Droid logo Droid   Kilocode logo Kilocode   Kimi logo Kimi   Kiro logo Kiro   Mistral Vibe logo Mistral Vibe   Qwen Code logo Qwen Code   Rovo Dev logo Rovo Dev   + any CLI agent


Install

Desktop — macOS, Windows, Linux

Or via a package manager:

# macOS (Homebrew)
brew install --cask stablyai/orca/orca

# Arch Linux (AUR) — or stably-orca-git to build from source
yay -S stably-orca-bin

Mobile Companion — iOS, Android

Pair with your desktop app to monitor and steer your agents from your phone.


Community & Support

  • Discord: Join the community on Discord.

  • Twitter / X: Follow @orca_build for updates and announcements.

  • WeChat: Scan to join the Orca community WeChat group 7. If it is full, use group 8.

    WeChat group 7 QR code for the Orca community   WeChat group 8 QR code for the Orca community

  • Feedback & Ideas: We ship fast. Missing something? Request a new feature.

  • Privacy: See the privacy & telemetry docs for what anonymous usage data Orca collects and how to opt out.

  • Show Support: Star this repo to follow along with our daily ships.


Developing

Want to contribute or run locally? See our CONTRIBUTING.md guide.

Orca contributors

GitHub star history chart for stablyai/orca

Signed Builds

Windows code signing sponored/provided by SignPath.io, certificate by SignPath Foundation.

License

Orca is free and open source under the MIT License.

S
Description
Orca is the ADE for working with a fleet of parallel agents. Run any coding agent with your own subscription. Available on desktop, mobile and remote runtime.
Readme MIT
1.5 GiB
Languages
TypeScript 95.2%
JavaScript 4%
Swift 0.2%
CSS 0.2%
HCL 0.1%