Files
orca/mobile
Jinwoo Hong 0869d997c8 refactor(mobile): send the rest of the session domain through typed RpcOperations (step 4) (#20891)
* test(mobile): record the session domain's remaining call sites before migrating them

Freezes main's behaviour for what is left of `mobile/src/session/`: the AI Vault resume pair, the
clipboard image upload and its two attachment surfaces, the native-chat terminal writes, session
tab activation and reconciliation, the terminal-path tap, the structured agent launch, and the
session screen's own reads, tab creates/closes, review actions, notes, markdown save and quick
commands. 87 scenarios over 22 new families, recorded from the pinned baseline
`c6a72169843ececf3a21da370ac50c5c5a4e6462` through a detached worktree, before any product edit.

Ten new modules under `adapters/`, so each domain's goldens are pinned by `adapterSha256` and no
existing family re-digests. `native-mounting-substitutes.ts` gains `expo-haptics` (inert: every
caller is already fire-and-forget), `expo-clipboard` (a per-recording pasteboard cell, because
these screens read back what they wrote) and `BackHandler`/`Keyboard`. That is an engine file, so
all 509 pre-existing goldens move on `recorderSha256` and on nothing else.

Two families cannot be matrixed at their first request: the clipboard upload chain puts the start
reply's `uploadId` into the params of every later call, so a partition that answers the start
differently changes a downstream assertion rather than a recorded observation. Their base scenarios
stop at that first reply instead, and the fallback arm carries the upload family's second site.

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

* test(mobile): type the new session mount fixtures against the product model

The ten adapter modules added with the session recordings typed several fixtures structurally —
loose maps, a local `Terminal`/`Tab` shape, `unknown` for the review screen state — which
`pnpm --dir mobile typecheck` rejects: `tsconfig` covers `src/test-support`, so an adapter is
checked like product code even though no test file is. Each one now names the product type it
stands in for (`MarkdownDocState`, `TerminalRecord`, `MobileSessionTab`, `ReviewScreenState`,
`MobileDiffReviewQueueItem`, `DiffComment`) and supplies its members through `mountFixture`.

Only one of those changed a recording: a `DiffComment` requires `side`, so the review actions now
put it on the wire and the two `review-mark-reviewed-*` goldens carry it. That is the fixture
becoming a real subset of the type it claimed, not a behaviour change — no product source moves in
this commit, and the parity claim the next one makes is against these bytes.

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

* style(mobile): format the session mount adapter and the recording manifest

`pnpm exec oxfmt --check .` from `mobile/` flagged both after the previous commit's type fixes.
The adapter is pinned by `adapterSha256`, so the eight goldens recorded through it are re-recorded
from the same baseline; the manifest is not pinned by its bytes — `scenarioSha256` canonicalises
the parsed scenarios — so no golden moves for it. Header-only either way: no observation changes.

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

* refactor(mobile): send the rest of the session domain through typed RpcOperations

Thirty files and 58 references leave the raw request port. Every send now names a declared
operation with a fixed method, one acceptance policy and one reader, and no call site casts a
reply payload: the AI Vault resume pair, the clipboard image upload with both its attachment
surfaces, the native-chat terminal writes, session tab activation and reconciliation, the
terminal-path tap, the structured agent launch, and the session screen's reads, tab
creates/closes, review actions, notes, markdown save, quick commands and file search.

Five new operation modules, plus two readers added to existing ones. Three methods get a second
reader, each argued where it is declared: `files.resolveTerminalPath` (the tap branches on five
members the grant refresh hands back whole), `files.open` (the tap's miss is silent, the Changes
screen raises the host's message) and `session.tabs.list` (the send sheet keeps only terminal
tabs, which the reveal poller and the reconciliation controller both drop). `git.stage` carries
two acceptances for the same reason `repo.list` does: a tapped file raises its refusal, a bulk
sweep counts it. No new acceptance policy.

The AI Vault resume launch and the review send sheet now share
`mobile-review-terminal-operations.ts` with the PR triage launch instead of re-deriving the same
create/send pair, and the file-search hook's `extractPaths` moves into the reader it belongs to.

One latent behaviour is preserved rather than fixed and wants a ticket:
`mobile-session-tab-activation.ts` decides whether to replay an activation with
`error instanceof LogicalClientCutoverError`, not with the message-matching
`isLogicalClientCutoverError` that exists because "instanceof can miss across bundle copies". Under
a second copy of the module the retry silently does not happen, which the recorder reproduces. No
golden scripts a cutover for this family, so none records the wrong behaviour.

The offender floor in the port ratchet comes down from 50 to 20: it is an anti-vacuity guard on a
list this migration is driving to zero, and 39 files still reach the port.

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

* fix(mobile): keep main's malformed-reply message and re-anchor two mutants

Three findings the reply matrices surfaced that the pilot scenarios could not.

The clipboard upload's `uploadId` read goes back to the raw result. A success carrying no result
throws a destructuring TypeError there, and V8 puts the destructured expression's source text in
the message — which the composer shows. Reading the slot off the interpreted payload rewrote that
sentence for every user who hits a malformed reply, on three families' `result-absent` and
`result-null` partitions. The cast is the one main made, kept for the message alone.

`race` and `new-tab-refusal-order` both anchored in text the migration rewrote, so each matched
zero sites. Re-anchored at their new homes; the defect each injects is unchanged, and
`probe-hole-witness.test.ts` still shows the probe killing the reorder while every pre-probe
scenario survives it.

`native-chat-send-delivery-unknown` is added as this domain's own mutant: dropping the
delivery-unknown arm of a chat send makes an ack lost after the frame was written read as a
definite rejection, which invites the user to send the same message twice. A second candidate —
swapping `terminal.list` from skip to throw — survives every golden and is not registered: the
inventory hook wraps its whole read in `catch { return false }`, so a refusal and a throw leave
the same strip.

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

* test(mobile): matrix every reply the new session families script

Thirty-four reply-matrix goldens, one per scripted reply across the twenty-two families the session
migration added, each running the eleven partitions in `reply-matrix.ts`. Recorded from the same
pinned baseline as the pilot goldens through the detached worktree, so they freeze main's answer to
a result-less success, a null result, an inner refusal envelope, a message-less outer refusal and a
transport drop — not the migrated code's.

They are laid down after the refactor because they are what found its three remaining divergences,
each fixed in the previous commit rather than recorded around: the clipboard upload's destructuring
message, and two mutation anchors the rewrite left matching zero sites.

Two families matrix only their first request. The clipboard upload chain puts the start reply's
`uploadId` into every later call's params, so a partition that answers the start differently moves
a downstream assertion instead of a recorded observation; their base scenarios stop there, and the
upload family's fallback arm carries its second site.

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

* refactor(mobile): keep the new session readers inside the operation cast fence

`rpc-operation-cast-fence.test.ts` refuses a type assertion anywhere in the region reachable from
`rpc-operation-contract.ts`, and four of the new operation modules asserted their own result type.
Each of those reads goes back to `rpcUncheckedPayloadReader`/`rpcUncheckedMemberReader`, and the
shape the call site expects is named at the call site, which is where every migrated domain already
puts it. `extractPaths` and `readQuickCommands` return to their hooks for the same reason — both
were only movable by carrying a cast with them.

No golden moves: the readers hand back the same values, and all 705 recordings still compare clean.

The two frozen source-parity suites over the session route family are refreshed for the migrated
text: three hashes, one runtime-string count, and the inventory hook's acceptance check, which now
reads `!isCurrent() || !response.accepted`.

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

* fix(mobile): drop three assertions the changed-code casting gate rejects

`pnpm run check:code-quality:changed` reports `consistent-type-assertions` separately from oxlint's
own pass, and three sites had no rationale: the resume preparation's payload read, which gets the
standard SAFETY line, and two adapter refs whose `null as string | null` is just an annotation
written the wrong way round. The adapter is pinned by `adapterSha256`, so its thirteen goldens are
re-recorded from the baseline — header-only, no observation moves.

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

* refactor(mobile): answer round 1 on the session migration

Reuses `RpcOperationSender` for the file-tap client instead of respelling it as
`Parameters<typeof fileTapPathResolve.request>[0]` at two sites; the type is the same by
construction, and the handlers file no longer imports an operation only to name its first parameter.

Names why `worktree.set-review-notes` stays separate from source-control's identical
`worktree.set-review-link`, and why the new-tab loader's two preflight reads do not share the task
drawer's readers on the same methods.

Corrects the `callAgentSession` holdout count: five call sites across two hooks plus one inside the
module's own mutation wrapper, not seven callers across five files.

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

* docs(mobile): state what actually gates the native chat paging read

The `nativeChat.readSession` send sits in the paging callback, not in the mount effect. What blocks
recording it is that the mount effect's `nativeChat.subscribe` is what arms the offset and
generation the callback pages against, and the request-only runner refuses to open a subscription.

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

* refactor(mobile): answer round 2 on the session migration

The tapped-path resolve is now a re-export of the preview screen's `terminalArtifactPathResolve`
rather than a second definition: same method, same skip, same whole-payload read, so the only thing
the old comment could claim was a difference that was not there. `fileOwnershipRuntimeStatusRead`
already re-exports for this reason.

`worktree.show` has four readers, not three. The one the notes read is closest to is
`fileOwnershipWorktreeRead`, which reads the same member whole, and acceptance is all that separates
them: a file mutation throws rather than write to the wrong host, a session screen without its notes
shows none and keeps working.

`interpretOrThrowRefusalMessage` is generic, so a caller keeps the interpretation's own type, and
eight longhand copies of its try/catch across five files now call it. Three more copies wait on a
frozen source hash; see the report.

Three operations sit in the module matching their direction: the quick-command save with the writes,
the review-notes read and the markdown read with the reads. The quick-command reader is shared
across that line, which is what keeps the save from adopting `[]` on a payload the parser rejects.

The native-chat readability probe imports `MobileRuntimeRepoSummary` instead of redeclaring it, and
a stray mutant comment that described the race entry is gone.

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

* refactor(mobile): finish the refusal-interpretation helper across the session hooks

Twelve try/catch blocks across the session hooks now call the generic
interpretOrThrowRefusalMessage instead of rethrowing
refusedRpcMessageOrFallback by hand. Each one throws the same message on the
same inputs, and the request stays outside the catch, so a transport rejection
keeps its delivery-unknown identity.

Two frozen parity hashes move for that reason alone:

- HEAD_CALLBACK_BODY_SHA256, for the one converted block that sits in a
  useCallback (use-mobile-session-diff-comments.ts)
- HEAD_NESTED_FUNCTION_SHA256, for the three that sit in plain nested functions
  (use-mobile-session-content-create-actions.ts)

Every other parity hash and every count is unchanged: hooks 269, callbacks 77,
effects 24, nested functions 12, plus the callback identity, effect, main-hook,
hook-binding, content-hook, native registration/removal and timer hashes.

Copies that stay longhand, by design:

- the action-level try blocks that wrap the request as well as the interpret and
  surface the failure to the UI, in the diff-review comment, git and send hooks
- the two catches that call setActionError or setError and return instead of
  throwing, in use-mobile-diff-review-interactions.ts and use-quick-commands.ts
- the call sites in files this branch does not touch (pr-ai-triage-launch.ts,
  mobile-diff-review-loaders.ts, github-pr-rpc.ts,
  github-pr-mutation-outcome.ts)

No golden moves: this touches no golden, adapter or recorder engine file.

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

* test(mobile): re-record the goldens at the new baseline pin

One re-record of all 641 goldens against pin e7206f62a8 from a detached
worktree at that commit, with this branch's rpc-recording/ tree,
pilot-scenarios.json and scripts/rpc-recording.mts overlaid and only the
differing files copied in. The recorder's own fence passed: product sources
under mobile/src outside the recorder, src/shared and the lockfile were
byte-identical to the pin, with nothing untracked under the guarded trees.

Every golden now carries one baseline, one lockfileSha256 and one
recorderSha256. recorderSha256 moves on all 641 because this branch's recorder
tree adds adapters to main's, so main's own value could not survive the merge.
baseline moves on exactly the 121 goldens this branch adds, from c6a7216984
to e7206f62a8.

595 goldens are header-only. The 46 bodies that move are all among this
branch's 121 and all gain the `sent` ordinal that #20884 added to effects,
verified field by field: each effect is byte-identical apart from the new key,
and no effect was added or dropped. None of main's 509 bodies move, and the
six-golden agentSession.structured-launch family does not move either.

Claude-Session: https://claude.ai/code/session_01JNnE9qzUZMMnqpZWCqM3nb
2026-09-15 19:16:45 -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 lint
cd ..
pnpm typecheck:node

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.tsDESKTOP_PROTOCOL_VERSION, MIN_COMPATIBLE_MOBILE_VERSION
  • mobile/src/transport/protocol-version.tsMOBILE_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