Files
orca/mobile
Jinwoo Hong e47ef8cc28 feat(mobile): the shell tells a page which optional capabilities it has (OTA phase D, C8.1) (#22141)
* fix(mobile): publish page-route pairs the strict host schema accepts (OTA phase D, C8.1)

`routeViewOf` handed the manifest's own route entries to the host as
`pageRouteGrants`. The phone reads a manifest route loosely, so an entry
arrives carrying whatever field the desktop that wrote it knew about, and
`BridgePageRouteGrantsSchema` is `.strict()`: one unread key refuses the
pairs, `createBridgeHost` refuses the route with them, and the page gets no
`init` at all rather than losing one field.

Fixed before any route carries an optional grant (ruling 37.4), so the
manifest field the next commits add costs an installed shell nothing.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

* chore: drop the closure and bundle probe scripts from the tree

Scratch measurements for C8.1 (which route closures reach the HTML preview,
and what the preview render rig costs to bundle with a client provider). They
belong outside the repository and were swept in by the previous commit's
`git add -A`.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

* feat(mobile): a manifest route may declare optional grants (OTA phase D, C8.1)

Design B of design-ota-c8-1.md, ruling 37. `MobileWebBundleRouteSchema` grows
`optionalGrants` under the required lane's own grammar, with the 16-name
ceiling applied over the union of the two lists rather than to each. Serving a
route still reads `grants` alone, so a capability a screen cannot work without
stays required and takes the route native; a session's granted list is
`[...grants, ...optionalGrants]` narrowed to what this shell implements, from
one helper that both `grantsForRoute` and the `pageRouteGrants` publish read.

The ruling's compatibility rationale is corrected in place. `z.looseObject`
passes unknown members through rather than dropping them (measured, zod
4.4.3), so a shell older than the field still receives the key; what it lacks
is a policy that reads one. What makes the lane safe against such a shell is
therefore the previous commit's publish fix, not the reader.

BRIDGE_PROTOCOL_VERSION stays 1. No new notify, verb or frame field.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

* feat(mobile): name the shell's cancelled-navigation behaviour as a grant (OTA phase D, C8.1)

`externalNavigation` joins `MOBILE_WEB_SHELL_GRANTS` beside `screencastBinary`
and `haptics`, declared in `cancelled-navigation-target.ts` because that is
the module holding the rule which acts on it. A third token that is neither a
verb nor a notify: the page posts nothing to make a cancelled top-frame
navigation happen, so this list is the only thing that can tell a page whether
a tap inside the sealed HTML-preview frame escapes at all.

A constant and not a platform read (ruling 37.1): both engines dispatch the
event, `ios/MobileWebShellView.swift:481` and Android's
`MobileWebShellView.kt:382`, so an app build carries the behaviour on both or
on neither.

The policy census grows the half that was only pinned by the verb table: the
implemented set is that table plus exactly three non-verb tokens, each read
off the module that declares it.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

* feat(mobile): the bundle builder carries a route's optional grants (OTA phase D, C8.1)

`resolveMobileWebPageRoutes` maps each declaration member by member, so a
field the declaration grows reaches a phone only once the map names it: until
now `optionalGrants` would have been dropped in silence and every route would
have declared nothing optional. Omitted when the route declares none, because
absent and empty are the same answer to a shell.

The declaration suite grows the rule rather than a row: the map carries the
lane through and writes no key without one, and the lane is held to the
manifest's own grammar and to the ceiling over the union of the two lists.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

* feat(mobile): the HTML preview hides its links on a shell that cannot open one (OTA phase D, C8.1)

The session route declares `externalNavigation` on the optional lane, and the
preview asks for it before it renders an artifact's links as links. Ruling
37.2's three readings are what "hide" means here, and removing `href` is what
delivers all three at once: `a:any-link` stops matching, so the UA stylesheet
stops underlining, the element leaves the tab order, and there is no dead
anchor a tap does nothing on. The text the author wrote stays where it was,
the artifact paints, and the Preview/Source toggle is untouched.

Done with the browser's own parser rather than over the source text: an `href`
inside a comment or a `<template>` is text to a browser, and a pass that
rewrote either would be editing the artifact instead of its links. The frame
also loses `allow-top-navigation-by-user-activation` on that path, so a link
the pass somehow missed is refused by the browsing context as well.

One route, measured rather than assumed: the design said two, and the file
preview route's closure does not reach the HTML preview at all - it renders
`MobileFilePreviewScreen`. The new closure census derives that list from the
hook's callers.

The render rig grows the case on both engines and the readings it needs, and
`mobile-web-app-preview-frame-readings.mjs` is split out of it at the
readings/arms boundary, because the two were over the 600-line cap together.
Two engine findings are recorded in the rig: an `<a>` with no `href` still
answers `tabIndex` 0 on both, so focusability is asked by focusing; and WebKit
computes `cursor: auto` for a real link, so that reading is pinned where it
discriminates and its blindness pinned where it does not.

The hop-coverage census now reads the effective set, because that is what the
running rule compares. Inert today: the session route is the only declarer and
an opener into every other route.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

* test(mobile): pin the preview's hidden link path where the unit suite can reach it (OTA phase D, C8.1)

The mobile suite runs in a `node` environment whose resolver has no `.web`
precedence, so `MobileHtmlPreview.web.tsx`'s import of the grant hook lands on
the native sibling, which answers yes unconditionally. That is why the
existing component suite still measured the granted frame without knowing a
grant exists, and it means the hidden path had no coverage in the sharded
`test` job, where the render rig is skipped for want of the bundler's
dependencies.

So the wiring gets its own file with the module replaced: that the component
asks, and that both the frame's sandbox and the document it is handed follow
the one answer. happy-dom rather than the suite default, because the inerting
pass parses with the browser's own `DOMParser`.

`String(node.type)` rather than a literal comparison: `node.type` is
`ElementType`, which overlaps a real intrinsic tag and not the host strings
these mocks render, so `=== 'Pressable'` is a no-overlap error under
`tsconfig.test.json` and the tests-typecheck ratchet reds on it.

Also replaces a `Reflect.get` the anti-slop gate refuses with an `in` check.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

* test(mobile): repin the session page closure at 4,362 for C8.1's three modules

Measured on both sides with `mobileWebAppRouteClosure(SESSION_ROUTE)` at base
`841d06a969` with all five postinstall generators run first, and the two
`local` lists diffed rather than the total inferred: 4,359 -> 4,362 modules,
1,017 -> 1,020 local.

All three are local source modules and none is vendored: the page's read of
`init.grants.native`, the pass that turns an artifact's links back into text
without the grant, and the module declaring the token beside the rule that
acts on it - reached both by that hook and by `page-route-policy.ts`. The
`bridge-caps.ts` it imports was already in this closure, and the hook's native
sibling is replaced rather than joined.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

* test(mobile): allowlist the preview's grant sibling among the .web.* overrides

`mobile-web-app-web-overrides.test.mjs` pins the allowlist against the `.web.*`
files on disk, so a new web sibling reds it until the file says why the page
needs one. Red before: `expected [ …(36) ] to deeply equal [ …(37) ]`, naming
`src/components/use-html-preview-link-grant.web.ts`.

The preview's own entry is corrected with it: its reason said
`allow-top-navigation-by-user-activation` is granted, and that token is now
conditional on the shell answering that it can open such a navigation.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

* test(mobile): the hidden-link render case waits on the frame's own reading (round 1)

CI's chromium arm timed out at the full 240 s on this case alone while the
WebKit sibling passed in 1.5 s and it passed 26/26 locally. The cause is the
third arm: it tapped the granted link and waited through
`expectNavigation: 'main-frame'`, and `waitForRecordedNavigation` has no bound
but the case's own timeout. Under CI load the click missed its 2 s
actionability window, no navigation was ever recorded, and the arm sat in that
wait until vitest gave up - `recorded []`, with the frame attached only at
38.9 s. Three arms sharing one budget is what made this the case to find it.

The arm is dropped rather than its wait lengthened or retried. Every verdict
left is a reading the frame itself publishes: the anchors its document holds,
the style the engine computed for one, whether focus lands on it, and now
whether the tap this arm made landed at all - `actError` is asserted null, so
a click that never reached its target is no longer the same three zeros as a
tap that did nothing.

Nothing is lost. The tap's outcome on a granted shell is the next case, on
these same counters from this same rig and with a budget of its own, which is
the presence precondition this file already uses elsewhere for the same
reason. The WebKit sibling's discriminating reads are untouched.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

* fix(mobile): the inert-link pass changes nothing an engine renders but the links (round 2)

Round 2's ruling: the hidden-link path may change nothing about the artifact's
rendering except that links are not links. A parse and a reserialise is not
free of that by default, and all four findings reproduced on Chromium 147 and
WebKit 26.4.

A same-document fragment link is kept. It starts no navigation at all, so it
goes on working inside the sealed frame whatever the shell can do, and taking
it away would be degradation over a capability it never needed - an artifact's
own table of contents is the case. Its `target` still goes, because a fragment
aimed at another frame is a navigation rather than a scroll, and `href=""` is
not a fragment: it resolves to the frame's own URL.

Links inside `template.content` are reached, recursively. `<template
shadowrootmode>` is a declarative shadow root the frame's parser attaches and
renders, and `querySelectorAll` does not walk into template content, so those
links arrived live inside a sandbox that refuses their navigation - the dead
anchor ruling 37.2 forbids. Measured: `parseFromString` attaches no such root
on either engine or in happy-dom, so the pass can reach them.

The leading newline of a `pre`, `listing` or `textarea` is written back. A
parser drops one after the start tag and the serialiser is specified to put it
back; measured, neither engine's does, so a round trip lost a blank line from
every such block.

The doctype is carried whole, and the reason is corrected from the one the
finding gave. It cannot move this frame between layout modes: a `srcdoc`
document takes its mode from its embedder, and measured, a quirks doctype, the
bare name and no doctype at all all read `CSS1Compat` inside the frame. What
rewriting it does is change the document the author wrote for no reason, with
`document.doctype` observable beside a Source tab showing the original. The
render case pins `compatMode` as the blind reading it is and reads the frame's
own doctype identifiers as the one that discriminates.

Option B was not available: the frame has no `allow-scripts` and inherits
`script-src 'self'`, so nothing runs inside it and there is no injection to
carry the work.

Also drops a vacuous half of the affordance test. `renderSource()` is called
with no argument, so the markup a Source view shows is the caller's own
closure and asserting it equals the fixture passed whatever the component did.
What the component decides is whether the rewritten frame stays mounted
underneath, and that is what is read now.

`mobile-web-app-preview-arm-driver.mjs` is split out of the render rig at the
boundary the readings module already names - the rig holds what each case
claims, the driver how an arm is driven, the readings what it reports - since
the three were over the 600-line cap together. No max-lines disable or bump.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb

* fix(mobile): a fragment link is a frame navigation in this preview, so it is inerted too (round 3)

pullfrog is right, reproduced on both engines before believing it. Round 2
kept `#`-prefixed hrefs on the theory that they are same-document scrolls. In
this frame they are not: the document's URL is `about:srcdoc` while its base
URL is inherited from the embedder, so `#section` resolves against the shell's
own URL and the destination differs from the document's by more than a
fragment - which makes activating it a frame navigation, and the shipped
`frame-src 'none'` refuses it.

Measured under the shipped policy, one tap, with something to scroll:

  Chromium 147   scrollY 0, frame becomes chrome-error://chromewebdata/,
                 artifact gone, embedder reports frame-src <origin>/preview
  WebKit 26.4    scrollY 0, frame stays about:srcdoc and intact, same report

So the destruction is Chromium-only but the absence of a scroll is not: there
was no working affordance to carve out for, and the carve-out left a live link
that destroys the preview - worse than the inert text it was meant to avoid.
Both sandbox values behave the same, so this is the base URL and the policy
rather than the sandbox.

The same tap does the same thing on the granted path, where this pass does not
run, so an artifact's internal links have never worked in the preview. That is
not this change's to fix; it is recorded in
`followup-html-preview-fragment-links.md`, and the render case reads the
granted arm's violation as its presence precondition so the behaviour is
pinned rather than merely known.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb
2026-09-22 02:11:40 -04:00
..

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 port 8081.

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

  1. Open Orca desktop.
  2. Go to Settings > Mobile.
  3. Scan the pairing QR code from the mobile app.
  4. 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

  1. Install Expo Go from Google Play
  2. Run pnpm start, scan QR with Expo Go
  3. For native modules: pnpm exec expo run:android
  4. Run with pnpm start --dev-client

iOS Simulator

  1. Install Xcode from the App Store
  2. Run pnpm start --ios to 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_VERSION
  • mobile/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 — with MOCK_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 omits transcriptPath to 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 (default orca-mock-send-mode in the system temporary directory) — accept (default) accepts the send, error fails it with mobile_input_floor_unavailable, anything else reports the send as rejected.
  • MOCK_TERMINAL_LIST_MODE_FILE (default orca-mock-terminal-list-mode in the system temporary directory) — omit returns an empty terminal list, other returns a list that omits the chat handle, anything else lists it.
  • MOCK_TERMINAL_STREAM_MODE_FILE (default orca-mock-terminal-stream-mode in the system temporary directory) — dead answers a subscribe with subscribed then end (a gone PTY), which is what exercises the rearm bound and terminal prune; anything else streams normally.

Connecting to Real Orca

  1. Start Orca desktop with WebSocket transport enabled
  2. In Orca, go to Settings > Mobile and scan the QR code with this app
  3. 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