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72 changes: 72 additions & 0 deletions .cursor/rules/cursor-cloud.mdc
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---
description: Cursor Cloud environment setup and run notes for T3 Code (Cursor-specific; not for other editors/CI)
alwaysApply: true
---

# Cursor Cloud specific instructions

These notes apply only to Cursor Cloud agents (kept out of the shared `AGENTS.md` since T3 Code is
developed in many places). They cover the pre-provisioned VM environment and non-obvious run caveats.

## Toolchain

Pre-installed and wired into login shells (`~/.bashrc`/`~/.profile`): Node 24 (via nvm), the global
`vp` (Vite+) CLI, and its bundled pnpm. `vp` is the package manager + task runner for this repo
(`vp i`, `vp check`, `vp run typecheck`, `vp test`, `vp run --filter <pkg> <script>`).

- Node gotcha: the base image also ships an older Node on `/exec-daemon` that wins on `PATH` in
non-login shells. Run commands in a login shell (`bash -lc '...'`) or prepend
`$HOME/.nvm/versions/node/v24.13.1/bin` so Node 24 (`engines.node: ^24.13.1`) is used.
- `vp check` also runs the formatter (not just lint); markdown edits must be formatter-clean. Run
`vp check --fix` before committing.

## Running the web app

- `npm run dev` (from repo root) starts contracts (watch), web (Vite, port 5733), and the server
(`node --watch`, port 13773) together, auto-wiring `VITE_HTTP_URL`/`VITE_WS_URL`. Use
`npm run dev:server` / `npm run dev:web` for one side. If base ports are taken it auto-offsets to
the next free pair, so read the actual ports from stdout. Avoid production `build`/`start` in dev.
- Auth/pairing: the server is unauthenticated by default and prints a pairing URL to stdout on startup
(e.g. `http://localhost:5733/pair#token=XXXX`). Open that URL in the browser to pair before the web
UI can talk to the server. Server state (SQLite, auth, projects) lives under `~/.t3`
(`T3CODE_HOME`); multiple `npm run dev` instances bind different ports but share that same DB.
- Agent providers are external CLIs (`codex`, `claude`, `cursor-agent`, `opencode`) probed on `PATH`.
Without one installed the UI loads but no agent can run. Claude Code
(`npm i -g @anthropic-ai/claude-code`) works headlessly using `ANTHROPIC_API_KEY` from the
environment (the server forwards `process.env` to the child; no interactive `claude auth login`
needed). Provider probing runs at startup and refreshes roughly every 5 minutes — restart the dev
server to pick up a newly installed provider CLI immediately.

## Android native builds (apps/mobile)

The Android toolchain is pre-installed and wired into login shells: OpenJDK 17
(`JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64`; the base image's default `java` is 21, so builds must
use `JAVA_HOME`), and the Android SDK at `$HOME/Android/Sdk` (`ANDROID_HOME`/`ANDROID_SDK_ROOT`) with
platform-tools, `platforms;android-36`, `build-tools;36.0.0`, `ndk;27.1.12297006`, and `cmake;3.22.1`.
Gradle auto-downloads any additional pinned SDK packages on demand.

- Generate the native project first: from `apps/mobile`,
`EXPO_NO_GIT_STATUS=1 APP_VARIANT=development npx expo prebuild --clean --platform android`
(the `android/` folder is generated, not committed). RN 0.85 defaults: compileSdk/targetSdk 36,
minSdk 24, NDK `27.1.12297006` (see `react-native/gradle/libs.versions.toml`).
- Build with Gradle from `apps/mobile/android`, e.g. `./gradlew :app:assembleDebug`. First build is
slow (Kotlin + C++/NDK codegen). Limit ABIs to speed things up, e.g.
`-PreactNativeArchitectures=arm64-v8a`. Verified working end-to-end on a native module:
`./gradlew :react-native-worklets:assembleDebug` compiles Kotlin + C++ and emits an AAR + `.so`s.
- No emulator: this VM has no `/dev/kvm` (nested virtualization), so a hardware-accelerated Android
emulator will not run. Use a physical device (`adb`) or EAS cloud builds (`vp run eas:android:*`) to
actually run the app. The full IDE GUI is unnecessary here — the SDK/NDK/Gradle toolchain that
Android Studio bundles is what is installed.
- Known blocker for the full-app `:app:assembleDebug` (pre-existing, app-level — not the environment):
`:react-native-screens:compileDebugKotlin` fails because `patches/react-native-screens@4.25.2.patch`
adds new codegen props (`subtitle`, `largeSubtitle`, `navigationItemStyle`,
`headerCenterBarButtonItems`, `headerToolbarItems`) to the JS spec + iOS native code but includes no
Android Kotlin setters, so the generated `ScreenStackHeaderConfigManagerInterface` is unimplemented.
The mobile README documents only iOS for local builds and routes Android through EAS. Fixing local
Android app builds requires an app/patch change (add the Android Kotlin setters), which is out of
scope for environment setup.

## Known flaky tests (unrelated to setup)

- `apps/server/src/git/GitManager.test.ts` (cross-repo PR metadata, can time out at 12s).
- `apps/server/src/provider/Layers/ProviderRegistry.test.ts` (codex binaryPath re-probe ordering).
5 changes: 4 additions & 1 deletion .github/workflows/mobile-eas-preview.yml
Original file line number Diff line number Diff line change
Expand Up @@ -57,7 +57,10 @@ jobs:
with:
eas-version: latest
token: ${{ secrets.EXPO_TOKEN }}
packager: pnpm
# npm, not pnpm: this only installs eas-cli into the action's own
# tool dir, and pnpm 11 hard-fails that install on dtrace-provider's
# ignored build script (no allowBuilds config outside the repo).
packager: npm

- name: Pull preview environment variables
if: steps.expo-token.outputs.present == 'true'
Expand Down
113 changes: 113 additions & 0 deletions .github/workflows/mobile-eas-production.yml
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name: Mobile EAS Production

# Production builds and OTA updates run from CI (Linux) — never from a laptop.
# Under the fingerprint runtime-version policy the fingerprint must be computed
# in the same OS/pnpm as the EAS build; a macOS `eas build` computes a different
# fingerprint (platform-specific deps + pnpm version) and errors. On this Linux
# runner, with corepack pinning pnpm 10.24 in eas.json, local == build.
on:
workflow_dispatch:
inputs:
mode:
description: "build (+ auto-submit to TestFlight) or update (OTA)"
required: true
type: choice
default: build
options:
- build
- update
platform:
description: "Target platform"
required: true
type: choice
default: ios
options:
- ios
- android
- all
message:
description: "OTA update message (mode=update only)"
required: false
type: string

jobs:
production:
name: EAS Production ${{ inputs.mode }}
runs-on: blacksmith-8vcpu-ubuntu-2404
permissions:
contents: read
env:
APP_VARIANT: production
NODE_OPTIONS: --max-old-space-size=8192
steps:
- id: expo-token
name: Check for EXPO_TOKEN
env:
EXPO_TOKEN: ${{ secrets.EXPO_TOKEN }}
run: |
if [ -n "$EXPO_TOKEN" ]; then
echo "present=true" >> "$GITHUB_OUTPUT"
else
echo "present=false" >> "$GITHUB_OUTPUT"
echo "EXPO_TOKEN is not available; skipping EAS production job."
fi

- name: Checkout
if: steps.expo-token.outputs.present == 'true'
uses: actions/checkout@v6
with:
fetch-depth: 0

- name: Setup Vite+
if: steps.expo-token.outputs.present == 'true'
uses: voidzero-dev/setup-vp@v1
with:
node-version-file: package.json
cache: true
run-install: true

- name: Expose pnpm
if: steps.expo-token.outputs.present == 'true'
run: |
pnpm_version="$(node --print "require('./package.json').packageManager.split('@').pop()")"
vp_pnpm_bin="$HOME/.vite-plus/package_manager/pnpm/$pnpm_version/pnpm/bin"
echo "$vp_pnpm_bin" >> "$GITHUB_PATH"
"$vp_pnpm_bin/pnpm" --version

- name: Setup EAS
if: steps.expo-token.outputs.present == 'true'
uses: expo/expo-github-action@v8
with:
eas-version: latest
token: ${{ secrets.EXPO_TOKEN }}
# npm, not pnpm: this only installs eas-cli into the action's own
# tool dir, and pnpm 11 hard-fails that install on dtrace-provider's
# ignored build script (no allowBuilds config outside the repo).
packager: npm

- name: Pull production environment variables
if: steps.expo-token.outputs.present == 'true'
working-directory: apps/mobile
env:
EXPO_TOKEN: ${{ secrets.EXPO_TOKEN }}
run: eas env:pull production --non-interactive

- name: Build and submit
if: steps.expo-token.outputs.present == 'true' && inputs.mode == 'build'
working-directory: apps/mobile
env:
EXPO_TOKEN: ${{ secrets.EXPO_TOKEN }}
run: eas build --platform ${{ inputs.platform }} --profile production --auto-submit --non-interactive --no-wait

- name: Publish OTA update
if: steps.expo-token.outputs.present == 'true' && inputs.mode == 'update'
working-directory: apps/mobile
env:
EXPO_TOKEN: ${{ secrets.EXPO_TOKEN }}
run: |
eas update \
--channel production \
--environment production \
--platform ${{ inputs.platform }} \
--message "${{ inputs.message || format('Production OTA ({0})', github.sha) }}" \
--non-interactive
1 change: 1 addition & 0 deletions .vite-hooks/pre-commit
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vp staged
2 changes: 1 addition & 1 deletion apps/desktop/package.json
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
{
"name": "@t3tools/desktop",
"version": "0.0.27",
"version": "0.0.28",
"private": true,
"type": "module",
"main": "dist-electron/main.cjs",
Expand Down
19 changes: 13 additions & 6 deletions apps/desktop/scripts/electron-launcher.mjs
Original file line number Diff line number Diff line change
Expand Up @@ -358,10 +358,7 @@ function resolveLinuxSandboxArgs(electronBinaryPath) {
}

export function resolveElectronPath() {
ensureElectronRuntime();

const require = NodeModule.createRequire(import.meta.url);
const electronBinaryPath = require("electron");
const electronBinaryPath = resolveElectronBinaryPath();

if (hostPlatform !== "darwin") {
return electronBinaryPath;
Expand All @@ -378,13 +375,23 @@ export function resolveElectronLaunchCommand(args = []) {
};
}

export function resolveElectronBinaryPath({
ensureRuntime = ensureElectronRuntime,
createRequire = NodeModule.createRequire,
moduleUrl = import.meta.url,
} = {}) {
ensureRuntime();

const require = createRequire(moduleUrl);
return require("electron");
}

export function resolveDevProtocolClient() {
if (hostPlatform !== "darwin" || !isDevelopment) {
return null;
}

const require = NodeModule.createRequire(import.meta.url);
const electronBinaryPath = require("electron");
const electronBinaryPath = resolveElectronBinaryPath();
const launcherBinaryPath = buildMacLauncher(electronBinaryPath);
return {
appBundlePath: NodePath.resolve(launcherBinaryPath, "..", "..", ".."),
Expand Down
22 changes: 21 additions & 1 deletion apps/desktop/scripts/electron-launcher.test.mjs
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
import { assert, describe, it } from "vite-plus/test";

import { makeDevelopmentLauncherScript } from "./electron-launcher.mjs";
import { makeDevelopmentLauncherScript, resolveElectronBinaryPath } from "./electron-launcher.mjs";

describe("electron development launcher", () => {
it("uses captured values only as fallbacks for a live runner environment", () => {
Expand All @@ -25,4 +25,24 @@ describe("electron development launcher", () => {
"exec '/repo/node_modules/electron/Electron' --t3code-dev-root='/repo/apps/desktop' '/repo/apps/desktop/dist-electron/main.cjs' \"$@\"",
);
});

it("repairs Electron before loading the package entrypoint", () => {
const calls = [];
const electronPath = resolveElectronBinaryPath({
ensureRuntime: () => {
calls.push("ensure");
},
createRequire: () => (specifier) => {
calls.push(`require:${specifier}`);
return "/repo/node_modules/electron/dist/Electron.app/Contents/MacOS/Electron";
},
moduleUrl: import.meta.url,
});

assert.equal(
electronPath,
"/repo/node_modules/electron/dist/Electron.app/Contents/MacOS/Electron",
);
assert.deepEqual(calls, ["ensure", "require:electron"]);
});
});
1 change: 1 addition & 0 deletions apps/desktop/src/backend/DesktopBackendConfiguration.ts
Original file line number Diff line number Diff line change
Expand Up @@ -607,6 +607,7 @@ export const make = Effect.gen(function* () {
const backendExposure = yield* serverExposure.backendConfig;
const persistedSettings = yield* settings.get;
const shared = yield* sharedInputs;
yield* wslEnvironment.preWarm(persistedSettings.wslDistro);
return yield* resolveWslStartConfig({
...shared,
port: backendExposure.port,
Expand Down
1 change: 1 addition & 0 deletions apps/mobile/.swiftlint.yml
Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
included:
- ios/T3Code
- modules/t3-composer-editor/ios
- modules/t3-native-controls/ios
- modules/t3-terminal/ios
- modules/t3-review-diff/ios

Expand Down
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