Neil 96eb97aad6 fix(runtime): split the host-contact epoch out of the connection generation (#20359)
* fix(runtime): split the host-contact epoch out of the connection generation

`connectionGeneration` carried two meanings and one reader was always wrong.
holding the session mirror through an outage leaves its subscriptions stranded
and that edge was the only thing left to revive them. But the same value is the
mirror's cache key -- use-runtime-session-mirror-environment-key.ts keys the
subscription effect on it, every published frame is stamped with it, and
web-session-terminal-retirement-proof-ledger.ts drops retained proofs when it
moves. So the bump #20085 needed as a resubscribe signal re-keyed and rebuilt
the mirror after any brief flap, which is the #19647 symptom #19873/#20059 fix.

Measured first: with the reconnect bump deleted, an ended stream followed by
recovery issues zero resubscribes, and the mirror's subscribe call registers no
`onClose`, so main's terminal close is dropped. #20085's claim is true -- the
subscription really is dead after recovery -- so the trigger has to exist. It
just must not be the cache key.

Give each meaning its own value:

- `connectionGeneration` returns to identity only: a new runtime session, a
  re-pair, an explicit clear. A same-runtime return no longer moves it, so no
  stamp, fence or retained proof is invalidated by a flap.
- `hostContactEpoch` counts "the host answered again after we lost contact". It
  lives on the store entry and is read only as a dependency of the two
  subscription effects in use-web-session-tabs-sync.ts -- never passed to an
  installer, never part of `environmentKey`, so it cannot become a stamp.

`useRuntimeSessionMirrorEnvironmentKey` becomes
`useRuntimeSessionMirrorEnvironmentKeys`, returning `environmentKey` (identity)
and `resubscribeSignal` (the epoch edge) from the one target scan, so the hot
ownership scan is not doubled.

Each direction is pinned by its own test: removing the resubscribe dependency
fails only 'reinstalls both session-tabs subscriptions when the host answers
again'; restoring the reconnect bump fails only the two key-stability tests.

* test(runtime): pin the mirror hydration verdict across a host flap

The generation tests assert the key string; this asserts what the user feels.
The mirror's hydration verdict is stamped with the connection generation, so any
bump discards it and every mirrored pane re-parks -- the tab-list rebuild. Held
across an unverifiable probe, still discarded when the runtime id actually moved.

* test(runtime): build real host statuses instead of casting partials
2026-09-17 02:07:52 -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

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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 0.0.48 · 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 8. Group 8 may be full; if so, scan the Group 9 QR code instead.

    WeChat group 8 QR code for the Orca community  WeChat group 9 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.

The relay that pairs the mobile app with a desktop host is also in this repository under cloud/, with a separate pnpm workspace and setup 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.
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