Jinwoo Hong
335d111265
* fix(mobile): name the Back control in every page-served screen The C2.7 device proof could only reach the tasks Back by tapping the native control's coordinates: inside the shell there is no native chrome behind it, so a bare Pressable is absent from the accessibility tree and a screen reader has nothing to announce. The agent-history panel's Back carries a label but no role; the tasks one carries neither. Both gain `accessibilityRole="button"`, and the tasks one the app's own wording, `accessibilityLabel="Back"` — the spelling its thirteen siblings use, including the agent-history panel this screen sits beside. The host screen's Back already carried both and did not move. The new census is a rule rather than a count: it finds every Back affordance under the screen tree each page route serves — a Pressable rendering a ChevronLeft that either carries the back-button style or calls back — and requires a button role and a Back-shaped label on each. Its coverage assertion reads MOBILE_WEB_PAGE_ROUTES, so a route registered without a screen entry fails here, the way the flag census fails for a switched route. Red first on both offenders by name. Two tasks parity hashes move, and only the two a JSX prop must move: `semantics` 3,272 -> 3,274 for the widened host signature and the two new runtime strings, and the render-token stream 35,195 -> 35,203 for the eight tokens the two attributes are. Hooks, statements, declarations and styles hold, which is the evidence that nothing executable changed. Recorded in the test's comment. Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb * fix(mobile): judge a Back control by what it does, and name the files pair Round 1 found the census discriminating on the ChevronLeft glyph, which separates nothing: dismisses sit in the same header slot with the same back-button style, so the rule claimed a dismiss and told it to be called Back, while the explorer's Close escaped only by drawing an X. The predicate is now the behaviour. A Back control is a Pressable whose press handler reaches a back call — a `back()`, `goBack()` or `onBack()` call, a handler named for one, or a local handler whose declaration makes one — or whose label already says Back. A control matching neither is outside the rule whatever it renders. The reviewer's mutation, a dismiss with the back-button style wrapping a ChevronLeft behind `onDismiss`, is claimed by the old predicate and passed over by this one, which is the whole of the difference. A spread now reads as unknown rather than absent, so a Pressable that hides these props behind one is a Back control that fails both rules instead of a control the scan never sees. No Pressable in the five trees spreads today, so the branch is inert and load-bearing. C3.1 registered the files explorer and preview, so the coverage assertion went red on its merge, as designed. Both screens join PAGE_SERVED_SCREENS and both Back controls gain `accessibilityRole="button"`; they already carried `Back to session` and `Back to files`. The tasks Back gains the `hitSlop={8}` its four siblings carry, so its touch target is no longer the glyph alone. Nine mutations: the dismiss stays out; a dropped role on each of the five controls and a dropped label on the tasks one go red by name; a spread fails both rules; a dropped table entry fails coverage; and dropping the host screen's label — its only detector, since `actions.leaveHost` is opaque — empties that tree and fails the presence assertion rather than passing in silence. Two parity hashes move for the one added prop and no count does: `semantics` holds at 3,274 lines with one changed, the host signature gaining `hitSlop`, and the render-token stream gains that attribute's four tokens, 35,203 -> 35,207. Recorded in the test's comment. Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb * fix(mobile): assert a Back per page route, not per screen directory Round 2 found the presence assertion reading directories while two routes share `src/files`, so the explorer's Back answered for the preview's as well: rewriting the preview's control to `onPress= {handleClose}` with `accessibilityLabel="Close"` left that route with no accessible Back and the suite green. Reproduced exactly, then made red by this change, which names the route and the module it failed in. Each PAGE_SERVED_SCREENS entry now names the module that renders its route's Back, and presence is asserted per entry. The rules still read whole trees, so a Back added beside a screen is ruled as well as the screen's own; the tree is derived from the module's directory rather than declared twice. The failure prints the offending list instead of comparing two values a reader cannot tell apart. The doc comment claimed the preview was carried by the label half of the predicate. It is not: `requestBack` is named for what it does, so the preview is found behaviourally like the explorer, the tasks screen and the agent-history panel. Dropping the label from each of those three leaves it detected and failing the naming rule, which is the evidence. Only the host screen depends on the label half, because `actions.leaveHost` is a member access this rule does not follow. The admitted residual gap stays admitted and the predicate is not widened for it: a second Back control in a screen that already has one, with an opaque handler and a label that does not say Back, is still outside what this rule sees. Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb
Orca Mobile
React Native companion app for Orca. Monitor worktrees, view terminal output, and send commands from your phone.
Local development uses two processes:
- Orca desktop/Electron from the repo root. This hosts the mobile WebSocket RPC server on port
6768. - Expo Metro from
mobile/. This serves the React Native app on port8081.
Unless a command says otherwise, run mobile app commands from the mobile/ directory.
Prerequisites
- Node.js 24+
- pnpm
- Xcode and/or Android Studio tooling for simulator or device builds
- Expo Go on your phone, or a development client build when native modules are needed
- Phone and desktop on the same LAN when testing a physical phone
Start Desktop Orca
From the repository root:
pnpm install
pnpm dev
Confirm the mobile RPC server is listening:
lsof -nP -iTCP:6768 -sTCP:LISTEN
Restart pnpm dev after changing Electron main-process code. Metro hot reload only applies to the mobile JavaScript bundle.
Start The Mobile App
cd mobile
pnpm install
pnpm start
Scan the Expo QR code with your phone's camera on iOS, or Expo Go on Android.
For a native dev-client build:
pnpm exec expo run:android
pnpm exec expo run:ios
pnpm start --dev-client
Pair With Desktop Orca
- Open Orca desktop.
- Go to Settings > Mobile.
- Scan the pairing QR code from the mobile app.
- Confirm the mobile host endpoint is
ws://<desktop-ip>:6768.
For the Android emulator, use ws://10.0.2.2:6768. For a physical phone, use the desktop LAN IP, for example ws://192.168.0.179:6768.
If the phone has a stale host entry, remove it from the app and pair again.
Development Paths
Android Phone
- Install Expo Go from Google Play
- Run
pnpm start, scan QR with Expo Go - For native modules:
pnpm exec expo run:android - Run with
pnpm start --dev-client
iOS Simulator
- Install Xcode from the App Store
- Run
pnpm start --iosto open in iOS Simulator
Physical Phone Debugging
The phone can be inspected through the connected device tooling:
orca snapshot --json
orca click --element @e3 --json
orca fill --element @e1 --value "ls" --json
orca screenshot --json
Use snapshot first to find the current element refs, then click/fill those refs. After mobile file edits, Metro usually hot reloads automatically, but navigating out of and back into the session screen can be useful because it re-runs terminal.subscribe.
Terminal Streaming Repro Without A Phone
Use this when terminal output does not render on device and you need to split server streaming bugs from WebView/UI bugs:
cd mobile
ORCA_MOBILE_WS_URL=ws://127.0.0.1:6768 pnpm exec tsx scripts/test-subscribe.ts <deviceToken> <serverPublicKeyB64>
You can pass a worktree selector as the third argument:
pnpm exec tsx scripts/test-subscribe.ts <deviceToken> <serverPublicKeyB64> "id:<worktreeId>"
pnpm exec tsx scripts/test-subscribe.ts <deviceToken> <serverPublicKeyB64> "path:/absolute/worktree/path"
pnpm exec tsx scripts/test-subscribe.ts <deviceToken> <serverPublicKeyB64> "name:my-worktree"
The expected result includes:
streamSawMarker: true
readSawMarker: true
If this repro fails, debug the desktop runtime/PTY path before the mobile WebView. If it passes but the phone is blank, debug the session screen or TerminalWebView readiness/queueing path.
Terminal Color Repro Without A Phone
Use this when terminal colors disappear after switching tabs. Open a Claude Code terminal and at least one other terminal in the target worktree, then run:
cd mobile
ORCA_MOBILE_WS_URL=ws://127.0.0.1:6768 pnpm exec tsx scripts/repro-terminal-colors.ts \
<deviceToken> <serverPublicKeyB64> "id:<worktreeId>"
The script captures terminal.subscribe snapshots in an A → B → A sequence and writes raw snapshots to mobile/terminal-color-repro/. If the two A snapshots have different sgrColor counts, the desktop snapshot changed during the switch. If they match, the ANSI color data is still present and the bug is in mobile replay/rendering.
Validation
Run these checks before committing mobile terminal changes:
cd mobile
pnpm exec tsc --noEmit
pnpm run check:tests-typecheck
pnpm lint
cd ..
pnpm typecheck:node
tsc --noEmit reads tsconfig.json, which excludes test files so Metro never bundles them.
tsconfig.test.json puts them back, and pnpm run typecheck:tests shows their errors in full.
check:tests-typecheck is the gate over it: a ratchet against tests-typecheck-baseline.txt, the
127 test files that do not typecheck yet. It fails when a file that checks today stops checking,
and when a baseline entry starts checking (prune it with
node scripts/check-tests-typecheck-ratchet.mjs --prune). The list may only shrink.
The same gate censuses the program first: every *.test.ts(x) on disk must be in it, or named in
the script's TESTS_OUTSIDE_PROGRAM with a reason. Without that, a test excluded from
tsconfig.test.json — or a Foo.test.tsx shadowed by a Foo.test.ts beside it, which a wildcard
include drops for the higher-priority extension — would leave the ratchet silently.
Protocol Version Compatibility
Mobile and desktop talk over a versioned protocol. Because mobile updates lag desktop by 24-48h via the App Store, both sides exchange version numbers on status.get so a genuinely incompatible combo can hard-block instead of silently misbehaving.
Constants live in two files (Metro can't resolve outside mobile/):
src/shared/protocol-version.ts—DESKTOP_PROTOCOL_VERSION,MIN_COMPATIBLE_MOBILE_VERSIONmobile/src/transport/protocol-version.ts—MOBILE_PROTOCOL_VERSION,MIN_COMPATIBLE_DESKTOP_VERSION
Today all four are set so evaluateCompat always returns { kind: 'ok' } — nothing blocks. The wire format is in place to flip a switch when needed.
When to bump
Bump DESKTOP_PROTOCOL_VERSION (and the mobile mirror MOBILE_PROTOCOL_VERSION when relevant) for breaking changes:
- Removed RPC method or required parameter that mobile uses
- Changed meaning (units, nullability) of an existing field mobile reads
- Changed encryption, framing, or auth handshake
Do not bump for additive changes:
- New RPC methods
- New optional fields on existing methods
- New event types in
terminal.subscribe
Set MIN_COMPATIBLE_MOBILE_VERSION (kill-switch) when desktop ships a change that requires a minimum mobile version to function safely. Same for MIN_COMPATIBLE_DESKTOP_VERSION from the mobile side.
When a verdict is blocked, mobile/src/components/ProtocolBlockScreen.tsx renders a screen pointing the user at either the App Store (mobile too old) or GitHub Releases (desktop too old).
To exercise the block screen locally: set MIN_COMPATIBLE_DESKTOP_VERSION = 999 in mobile/src/transport/protocol-version.ts, rebuild, pair to any desktop. Revert before merging.
Mock Server
Develop the mobile app without a running Orca desktop instance:
pnpm mock-server # starts mock WebSocket server on port 6768
Connect from the app using endpoint ws://localhost:6768 and token mock-device-token.
Environment variables
MOCK_NATIVE_CHAT=1— serve the native-chat scenario (one live agent tab, empty transcript, image upload) instead of the default terminal fixtures.MOCK_CHAT_AGENT=omp— withMOCK_NATIVE_CHAT=1, present an OMP tab and four decoded transcript messages, including a tool call and result, instead of the default Claude scenario. It deliberately omitstranscriptPathto exercise legacy-hook readability discovery; current OMP hooks may report a path.MOCK_SERVER_KEY_FILE— persist the server keypair across restarts so a paired device keeps its public-key pin. A missing or invalid file is re-keyed with a warning, which forces a re-pair.
Scenario control files
Read on every request, so behaviour can be flipped mid-session without a restart (a restart would re-key E2EE and force a re-pair). Write the mode into the file, or delete it for the default.
MOCK_SEND_MODE_FILE(defaultorca-mock-send-modein the system temporary directory) —accept(default) accepts the send,errorfails it withmobile_input_floor_unavailable, anything else reports the send as rejected.MOCK_TERMINAL_LIST_MODE_FILE(defaultorca-mock-terminal-list-modein the system temporary directory) —omitreturns an empty terminal list,otherreturns a list that omits the chat handle, anything else lists it.MOCK_TERMINAL_STREAM_MODE_FILE(defaultorca-mock-terminal-stream-modein the system temporary directory) —deadanswers a subscribe withsubscribedthenend(a gone PTY), which is what exercises the rearm bound and terminal prune; anything else streams normally.
Connecting to Real Orca
- Start Orca desktop with WebSocket transport enabled
- In Orca, go to Settings > Mobile and scan the QR code with this app
- The QR encodes the connection endpoint, device token, and TLS fingerprint
Project Structure
mobile/
├── app/ # Expo Router screens (file-based routing)
│ ├── _layout.tsx # Root layout with navigation stack
│ ├── index.tsx # Home screen — paired hosts list
│ └── pair-scan.tsx # QR code scanning screen
├── src/
│ ├── terminal/ # Terminal WebView and xterm bridge
│ └── transport/ # WebSocket RPC client
├── scripts/
│ ├── test-subscribe.ts # Desktop streaming repro without a phone
│ └── mock-server.ts # Standalone mock WebSocket server
└── assets/ # App icons and splash screen