feat: add upgrading expo skill

Upgrade the React Native client through Expo SDK 56, align workspace React versions, switch Bun installs to the hoisted linker for Expo compatibility, and fix the Metro proxy to handle localhost/IPv6 loopback after the SDK upgrade.

.agents/skills/upgrading-expo/SKILL.md

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+---
+name: upgrading-expo
+description: Guidelines for upgrading Expo SDK versions and fixing dependency issues
+version: 1.0.0
+license: MIT
+---
+
+## References
+
+- ./references/react-19.md -- SDK +54: React 19 changes (useContext → use, Context.Provider → Context, forwardRef removal)
+- ./references/new-architecture.md -- SDK +53: New Architecture migration guide
+- ./references/react-compiler.md -- SDK +54: React Compiler setup and migration guide
+- ./references/native-tabs.md -- SDK +55: Native tabs changes (Icon/Label/Badge now accessed via NativeTabs.Trigger.\*)
+- ./references/expo-av-to-audio.md -- SDK +55: Migrate audio playback and recording from expo-av to expo-audio
+- ./references/expo-av-to-video.md -- SDK +55: Migrate video playback from expo-av to expo-video
+- ./references/react-navigation-to-expo-router.md -- SDK +56: Migrate `@react-navigation/*` imports to `expo-router` entry points (codemod + manual mapping)
+
+## Beta/Preview Releases
+
+Beta versions use `.preview` suffix (e.g., `55.0.0-preview.2`), published under `@next` tag.
+
+Check if latest is beta: https://exp.host/--/api/v2/versions (look for `-preview` in `expoVersion`)
+
+```bash
+npx expo install expo@next --fix  # install beta
+```
+
+## Step-by-Step Upgrade Process
+
+1. Upgrade Expo and dependencies
+
+```bash
+npx expo install expo@latest
+npx expo install --fix
+```
+
+2. Run diagnostics: `npx expo-doctor`
+
+3. Clear caches and reinstall
+
+```bash
+npx expo export -p ios --clear
+rm -rf node_modules .expo
+watchman watch-del-all
+```
+
+## Breaking Changes Checklist
+
+- Check for removed APIs in release notes
+- Update import paths for moved modules
+- Review native module changes requiring prebuild
+- Test all camera, audio, and video features
+- Verify navigation still works correctly
+
+## Prebuild for Native Changes
+
+**First check if `ios/` and `android/` directories exist in the project.** If neither directory exists, the project uses Continuous Native Generation (CNG) and native projects are regenerated at build time — skip this section and "Clear caches for bare workflow" entirely.
+
+If upgrading requires native changes:
+
+```bash
+npx expo prebuild --clean
+```
+
+This regenerates the `ios` and `android` directories. Ensure the project is not a bare workflow app before running this command.
+
+## Clear caches for bare workflow
+
+These steps only apply when `ios/` and/or `android/` directories exist in the project:
+
+- Clear the cocoapods cache for iOS: `cd ios && pod install --repo-update`
+- Clear derived data for Xcode: `npx expo run:ios --no-build-cache`
+- Clear the Gradle cache for Android: `cd android && ./gradlew clean`
+
+## Housekeeping
+
+- Review release notes for the target SDK version at https://expo.dev/changelog
+- If using Expo SDK 54 or later, ensure react-native-worklets is installed — this is required for react-native-reanimated to work.
+- Enable React Compiler in SDK 54+ by adding `"experiments": { "reactCompiler": true }` to app.json — it's stable and recommended
+- Delete sdkVersion from `app.json` to let Expo manage it automatically
+- Remove implicit packages from `package.json`: `@babel/core`, `babel-preset-expo`, `expo-constants`.
+- If the babel.config.js only contains 'babel-preset-expo', delete the file
+- If the metro.config.js only contains expo defaults, delete the file
+
+## Deprecated Packages
+
+| Old Package          | Replacement                                          |
+| -------------------- | ---------------------------------------------------- |
+| `expo-av`            | `expo-audio` and `expo-video`                        |
+| `expo-permissions`   | Individual package permission APIs                   |
+| `@expo/vector-icons` | `expo-symbols` (for SF Symbols)                      |
+| `AsyncStorage`       | `expo-sqlite/localStorage/install`                   |
+| `expo-app-loading`   | `expo-splash-screen`                                 |
+| expo-linear-gradient | experimental_backgroundImage + CSS gradients in View |
+
+When migrating deprecated packages, update all code usage before removing the old package. For expo-av, consult the migration references to convert Audio.Sound to useAudioPlayer, Audio.Recording to useAudioRecorder, and Video components to VideoView with useVideoPlayer.
+
+## expo.install.exclude
+
+Check if package.json has excluded packages:
+
+```json
+{
+  "expo": { "install": { "exclude": ["react-native-reanimated"] } }
+}
+```
+
+Exclusions are often workarounds that may no longer be needed after upgrading. Review each one.
+## Removing patches
+
+Check if there are any outdated patches in the `patches/` directory. Remove them if they are no longer needed.
+
+## Postcss
+
+- `autoprefixer` isn't needed in SDK +53. Remove it from dependencies and check `postcss.config.js` or `postcss.config.mjs` to remove it from the plugins list.
+- Use `postcss.config.mjs` in SDK +53.
+
+## Metro
+
+Remove redundant metro config options:
+
+- resolver.unstable_enablePackageExports is enabled by default in SDK +53.
+- `experimentalImportSupport` is enabled by default in SDK +54.
+- `EXPO_USE_FAST_RESOLVER=1` is removed in SDK +54.
+- cjs and mjs extensions are supported by default in SDK +50.
+- Expo webpack is deprecated, migrate to [Expo Router and Metro web](https://docs.expo.dev/router/migrate/from-expo-webpack/).
+
+## Hermes engine v1
+
+Since SDK 55, users can opt-in to use Hermes engine v1 for improved runtime performance. This requires setting `useHermesV1: true` in the `expo-build-properties` config plugin, and may require a specific version of the `hermes-compiler` npm package. Hermes v1 will become a default in some future SDK release.
+
+## New Architecture
+
+The new architecture is enabled by default, the app.json field `"newArchEnabled": true` is no longer needed as it's the default. Expo Go only supports the new architecture as of SDK +53.

.agents/skills/upgrading-expo/agents/openai.yaml

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+interface:
+  display_name: "Upgrading Expo"
+  short_description: "Upgrade Expo SDKs, fix dependencies, adopt React 19 / React Compiler, and migrate deprecated Expo packages"
+  default_prompt: "Use $upgrading-expo to upgrade an Expo SDK, run diagnostics, fix dependency conflicts, decide whether prebuild/cache clearing applies, and migrate away from deprecated Expo packages."

.agents/skills/upgrading-expo/references/expo-av-to-audio.md

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+# Migrating from expo-av to expo-audio
+
+## Imports
+
+```tsx
+// Before
+import { Audio } from 'expo-av';
+
+// After
+import { useAudioPlayer, useAudioRecorder, RecordingPresets, AudioModule, setAudioModeAsync } from 'expo-audio';
+```
+
+## Audio Playback
+
+### Before (expo-av)
+
+```tsx
+const [sound, setSound] = useState<Audio.Sound>();
+
+async function playSound() {
+  const { sound } = await Audio.Sound.createAsync(require('./audio.mp3'));
+  setSound(sound);
+  await sound.playAsync();
+}
+
+useEffect(() => {
+  return sound ? () => { sound.unloadAsync(); } : undefined;
+}, [sound]);
+```
+
+### After (expo-audio)
+
+```tsx
+const player = useAudioPlayer(require('./audio.mp3'));
+
+// Play
+player.play();
+```
+
+## Audio Recording
+
+### Before (expo-av)
+
+```tsx
+const [recording, setRecording] = useState<Audio.Recording>();
+
+async function startRecording() {
+  await Audio.requestPermissionsAsync();
+  await Audio.setAudioModeAsync({ allowsRecordingIOS: true, playsInSilentModeIOS: true });
+  const { recording } = await Audio.Recording.createAsync(Audio.RecordingOptionsPresets.HIGH_QUALITY);
+  setRecording(recording);
+}
+
+async function stopRecording() {
+  await recording?.stopAndUnloadAsync();
+  const uri = recording?.getURI();
+}
+```
+
+### After (expo-audio)
+
+```tsx
+const recorder = useAudioRecorder(RecordingPresets.HIGH_QUALITY);
+
+async function startRecording() {
+  await AudioModule.requestRecordingPermissionsAsync();
+  await recorder.prepareToRecordAsync();
+  recorder.record();
+}
+
+async function stopRecording() {
+  await recorder.stop();
+  const uri = recorder.uri;
+}
+```
+
+## Audio Mode
+
+### Before (expo-av)
+
+```tsx
+await Audio.setAudioModeAsync({
+  allowsRecordingIOS: true,
+  playsInSilentModeIOS: true,
+  staysActiveInBackground: true,
+  interruptionModeIOS: InterruptionModeIOS.DoNotMix,
+});
+```
+
+### After (expo-audio)
+
+```tsx
+await setAudioModeAsync({
+  playsInSilentMode: true,
+  shouldPlayInBackground: true,
+  interruptionMode: 'doNotMix',
+});
+```
+
+## API Mapping
+
+| expo-av | expo-audio |
+|---------|------------|
+| `Audio.Sound.createAsync()` | `useAudioPlayer(source)` |
+| `sound.playAsync()` | `player.play()` |
+| `sound.pauseAsync()` | `player.pause()` |
+| `sound.setPositionAsync(ms)` | `player.seekTo(seconds)` |
+| `sound.setVolumeAsync(vol)` | `player.volume = vol` |
+| `sound.setRateAsync(rate)` | `player.playbackRate = rate` |
+| `sound.setIsLoopingAsync(loop)` | `player.loop = loop` |
+| `sound.unloadAsync()` | Automatic via hook |
+| `playbackStatus.positionMillis` | `player.currentTime` (seconds) |
+| `playbackStatus.durationMillis` | `player.duration` (seconds) |
+| `playbackStatus.isPlaying` | `player.playing` |
+| `Audio.Recording.createAsync()` | `useAudioRecorder(preset)` |
+| `Audio.RecordingOptionsPresets.*` | `RecordingPresets.*` |
+| `recording.stopAndUnloadAsync()` | `recorder.stop()` |
+| `recording.getURI()` | `recorder.uri` |
+| `Audio.requestPermissionsAsync()` | `AudioModule.requestRecordingPermissionsAsync()` |
+
+## Key Differences
+
+- **No auto-reset on finish**: After `play()` completes, the player stays paused at the end. To replay, call `player.seekTo(0)` then `play()`
+- **Time in seconds**: expo-audio uses seconds, not milliseconds (matching web standards)
+- **Immediate loading**: Audio loads immediately when the hook mounts—no explicit preloading needed
+- **Automatic cleanup**: No need to call `unloadAsync()`, hooks handle resource cleanup on unmount
+- **Multiple players**: Create multiple `useAudioPlayer` instances and store them—all load immediately
+- **Direct property access**: Set volume, rate, loop directly on the player object (`player.volume = 0.5`)
+
+## API Reference
+
+https://docs.expo.dev/versions/latest/sdk/audio/

.agents/skills/upgrading-expo/references/expo-av-to-video.md

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+# Migrating from expo-av to expo-video
+
+## Imports
+
+```tsx
+// Before
+import { Video, ResizeMode } from 'expo-av';
+
+// After
+import { useVideoPlayer, VideoView, VideoSource } from 'expo-video';
+import { useEvent, useEventListener } from 'expo';
+```
+
+## Video Playback
+
+### Before (expo-av)
+
+```tsx
+const videoRef = useRef<Video>(null);
+const [status, setStatus] = useState({});
+
+<Video
+  ref={videoRef}
+  source={{ uri: 'https://example.com/video.mp4' }}
+  style={{ width: 350, height: 200 }}
+  resizeMode={ResizeMode.CONTAIN}
+  isLooping
+  onPlaybackStatusUpdate={setStatus}
+/>
+
+// Control
+videoRef.current?.playAsync();
+videoRef.current?.pauseAsync();
+```
+
+### After (expo-video)
+
+```tsx
+const player = useVideoPlayer('https://example.com/video.mp4', player => {
+  player.loop = true;
+});
+
+const { isPlaying } = useEvent(player, 'playingChange', { isPlaying: player.playing });
+
+<VideoView
+  player={player}
+  style={{ width: 350, height: 200 }}
+  contentFit="contain"
+/>
+
+// Control
+player.play();
+player.pause();
+```
+
+## Status Updates
+
+### Before (expo-av)
+
+```tsx
+<Video
+  onPlaybackStatusUpdate={status => {
+    if (status.isLoaded) {
+      console.log(status.positionMillis, status.durationMillis, status.isPlaying);
+      if (status.didJustFinish) console.log('finished');
+    }
+  }}
+/>
+```
+
+### After (expo-video)
+
+```tsx
+// Reactive state
+const { isPlaying } = useEvent(player, 'playingChange', { isPlaying: player.playing });
+
+// Side effects
+useEventListener(player, 'playToEnd', () => console.log('finished'));
+
+// Direct access
+console.log(player.currentTime, player.duration, player.playing);
+```
+
+## Local Files
+
+### Before (expo-av)
+
+```tsx
+<Video source={require('./video.mp4')} />
+```
+
+### After (expo-video)
+
+```tsx
+const player = useVideoPlayer({ assetId: require('./video.mp4') });
+```
+
+## Fullscreen and PiP
+
+```tsx
+<VideoView
+  player={player}
+  allowsFullscreen
+  allowsPictureInPicture
+  onFullscreenEnter={() => {}}
+  onFullscreenExit={() => {}}
+/>
+```
+
+For PiP and background playback, add to app.json:
+
+```json
+{
+  "expo": {
+    "plugins": [
+      ["expo-video", { "supportsBackgroundPlayback": true, "supportsPictureInPicture": true }]
+    ]
+  }
+}
+```
+
+## API Mapping
+
+| expo-av | expo-video |
+|---------|------------|
+| `<Video>` | `<VideoView>` |
+| `ref={videoRef}` | `player={useVideoPlayer()}` |
+| `source={{ uri }}` | Pass to `useVideoPlayer(uri)` |
+| `resizeMode={ResizeMode.CONTAIN}` | `contentFit="contain"` |
+| `isLooping` | `player.loop = true` |
+| `shouldPlay` | `player.play()` in setup |
+| `isMuted` | `player.muted = true` |
+| `useNativeControls` | `nativeControls={true}` |
+| `onPlaybackStatusUpdate` | `useEvent` / `useEventListener` |
+| `videoRef.current.playAsync()` | `player.play()` |
+| `videoRef.current.pauseAsync()` | `player.pause()` |
+| `videoRef.current.replayAsync()` | `player.replay()` |
+| `videoRef.current.setPositionAsync(ms)` | `player.currentTime = seconds` |
+| `status.positionMillis` | `player.currentTime` (seconds) |
+| `status.durationMillis` | `player.duration` (seconds) |
+| `status.didJustFinish` | `useEventListener(player, 'playToEnd')` |
+
+## Key Differences
+
+- **Separate player and view**: Player logic decoupled from the view—one player can be used across multiple views
+- **Time in seconds**: Uses seconds, not milliseconds
+- **Event system**: Uses `useEvent`/`useEventListener` from `expo` instead of callback props
+- **Video preloading**: Create a player without mounting a VideoView to preload for faster transitions
+- **Built-in caching**: Set `useCaching: true` in VideoSource for persistent offline caching
+
+## Known Issues
+
+- **Uninstall expo-av first**: On Android, having both expo-av and expo-video installed can cause VideoView to show a black screen. Uninstall expo-av before installing expo-video
+- **Android: Reusing players**: Mounting the same player in multiple VideoViews simultaneously can cause black screens on Android (works on iOS)
+- **Android: currentTime in setup**: Setting `player.currentTime` in the `useVideoPlayer` setup callback may not work on Android—set it after mount instead
+- **Changing source**: Use `player.replace(newSource)` to change videos without recreating the player
+
+## API Reference
+
+https://docs.expo.dev/versions/latest/sdk/video/

.agents/skills/upgrading-expo/references/native-tabs.md

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+# Native Tabs Migration (SDK 55)
+
+In SDK 55, `Label`, `Icon`, `Badge`, and `VectorIcon` are now accessed as static properties on `NativeTabs.Trigger` rather than separate imports.
+
+## Import Changes
+
+```tsx
+// SDK 53/54
+import {
+  NativeTabs,
+  Icon,
+  Label,
+  Badge,
+  VectorIcon,
+} from "expo-router/unstable-native-tabs";
+
+// SDK 55+
+import { NativeTabs } from "expo-router/unstable-native-tabs";
+```
+
+## Component Changes
+
+| SDK 53/54        | SDK 55+                             |
+| ---------------- | ----------------------------------- |
+| `<Icon />`       | `<NativeTabs.Trigger.Icon />`       |
+| `<Label />`      | `<NativeTabs.Trigger.Label />`      |
+| `<Badge />`      | `<NativeTabs.Trigger.Badge />`      |
+| `<VectorIcon />` | `<NativeTabs.Trigger.VectorIcon />` |
+| (n/a)            | `<NativeTabs.BottomAccessory />`    |
+
+## New in SDK 55
+
+### BottomAccessory
+
+New component for Apple Music-style mini players on iOS +26 that float above the tab bar:
+
+```tsx
+<NativeTabs>
+  <NativeTabs.BottomAccessory>
+    {/* Content above tabs */}
+  </NativeTabs.BottomAccessory>
+  <NativeTabs.Trigger name="(index)">
+    <NativeTabs.Trigger.Label>Home</NativeTabs.Trigger.Label>
+  </NativeTabs.Trigger>
+</NativeTabs>
+```
+
+On Android and web, this component will render as a no-op. Position a view absolutely above the tab bar instead.
+
+### Icon `md` Prop
+
+New `md` prop for Material icon glyphs on Android (alongside existing `drawable`):
+
+```tsx
+<NativeTabs.Trigger.Icon sf="house" md="home" />
+```
+
+## Full Migration Example
+
+### Before (SDK 53/54)
+
+```tsx
+import {
+  NativeTabs,
+  Icon,
+  Label,
+  Badge,
+} from "expo-router/unstable-native-tabs";
+
+export default function TabLayout() {
+  return (
+    <NativeTabs minimizeBehavior="onScrollDown">
+      <NativeTabs.Trigger name="(index)">
+        <Label>Home</Label>
+        <Icon sf="house.fill" />
+        <Badge>3</Badge>
+      </NativeTabs.Trigger>
+      <NativeTabs.Trigger name="(settings)">
+        <Label>Settings</Label>
+        <Icon sf="gear" />
+      </NativeTabs.Trigger>
+      <NativeTabs.Trigger name="(search)" role="search">
+        <Label>Search</Label>
+      </NativeTabs.Trigger>
+    </NativeTabs>
+  );
+}
+```
+
+### After (SDK 55+)
+
+```tsx
+import { NativeTabs } from "expo-router/unstable-native-tabs";
+
+export default function TabLayout() {
+  return (
+    <NativeTabs minimizeBehavior="onScrollDown">
+      <NativeTabs.Trigger name="(index)">
+        <NativeTabs.Trigger.Label>Home</NativeTabs.Trigger.Label>
+        <NativeTabs.Trigger.Icon sf="house.fill" md="home" />
+        <NativeTabs.Trigger.Badge>3</NativeTabs.Trigger.Badge>
+      </NativeTabs.Trigger>
+      <NativeTabs.Trigger name="(settings)">
+        <NativeTabs.Trigger.Label>Settings</NativeTabs.Trigger.Label>
+        <NativeTabs.Trigger.Icon sf="gear" md="settings" />
+      </NativeTabs.Trigger>
+      <NativeTabs.Trigger name="(search)" role="search">
+        <NativeTabs.Trigger.Label>Search</NativeTabs.Trigger.Label>
+      </NativeTabs.Trigger>
+    </NativeTabs>
+  );
+}
+```
+
+## Migration Checklist
+
+1. Remove `Icon`, `Label`, `Badge`, `VectorIcon` from imports
+2. Keep only `NativeTabs` import from `expo-router/unstable-native-tabs`
+3. Replace `<Icon />` with `<NativeTabs.Trigger.Icon />`
+4. Replace `<Label />` with `<NativeTabs.Trigger.Label />`
+5. Replace `<Badge />` with `<NativeTabs.Trigger.Badge />`
+6. Replace `<VectorIcon />` with `<NativeTabs.Trigger.VectorIcon />`
+
+- Read docs for more info https://docs.expo.dev/versions/v55.0.0/sdk/router-native-tabs/

.agents/skills/upgrading-expo/references/new-architecture.md

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+# New Architecture
+
+The New Architecture is enabled by default in Expo SDK 53+. It replaces the legacy bridge with a faster, synchronous communication layer between JavaScript and native code.
+
+## Documentation
+
+Full guide: https://docs.expo.dev/guides/new-architecture/
+
+## What Changed
+
+- **JSI (JavaScript Interface)** — Direct synchronous calls between JS and native
+- **Fabric** — New rendering system with concurrent features
+- **TurboModules** — Lazy-loaded native modules with type safety
+
+## SDK Compatibility
+
+| SDK Version | New Architecture Status |
+| ----------- | ----------------------- |
+| SDK 53+     | Enabled by default      |
+| SDK 52      | Opt-in via app.json     |
+| SDK 51-     | Experimental            |
+
+## Configuration
+
+New Architecture is enabled by default. To explicitly disable (not recommended):
+
+```json
+{
+  "expo": {
+    "newArchEnabled": false
+  }
+}
+```
+
+## Expo Go
+
+Expo Go only supports the New Architecture as of SDK 53. Apps using the old architecture must use development builds.
+
+## Common Migration Issues
+
+### Native Module Compatibility
+
+Some older native modules may not support the New Architecture. Check:
+
+1. Module documentation for New Architecture support
+2. GitHub issues for compatibility discussions
+3. Consider alternatives if module is unmaintained
+
+### Reanimated
+
+React Native Reanimated requires `react-native-worklets` in SDK 54+:
+
+```bash
+npx expo install react-native-worklets
+```
+
+### Layout Animations
+
+Some layout animations behave differently. Test thoroughly after upgrading.
+
+## Verifying New Architecture
+
+Check if New Architecture is active:
+
+```tsx
+import { Platform } from "react-native";
+
+// Returns true if Fabric is enabled
+const isNewArch = global._IS_FABRIC !== undefined;
+```
+
+Verify from the command line if the currently running app uses the New Architecture: `bunx xcobra expo eval "_IS_FABRIC"` -> `true`
+
+## Troubleshooting
+
+1. **Clear caches** — `npx expo start --clear`
+2. **Clean prebuild** — `npx expo prebuild --clean`
+3. **Check native modules** — Ensure all dependencies support New Architecture
+4. **Review console warnings** — Legacy modules log compatibility warnings

.agents/skills/upgrading-expo/references/react-19.md

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+# React 19
+
+React 19 is included in Expo SDK 54. This release simplifies several common patterns.
+
+## Context Changes
+
+### useContext → use
+
+The `use` hook replaces `useContext`:
+
+```tsx
+// Before (React 18)
+import { useContext } from "react";
+const value = useContext(MyContext);
+
+// After (React 19)
+import { use } from "react";
+const value = use(MyContext);
+```
+
+- The `use` hook can also read promises, enabling Suspense-based data fetching.
+- `use` can be called conditionally, this simplifies components that consume multiple contexts.
+
+### Context.Provider → Context
+
+Context providers no longer need the `.Provider` suffix:
+
+```tsx
+// Before (React 18)
+<ThemeContext.Provider value={theme}>
+  {children}
+</ThemeContext.Provider>
+
+// After (React 19)
+<ThemeContext value={theme}>
+  {children}
+</ThemeContext>
+```
+
+## ref as a Prop
+
+### Removing forwardRef
+
+Components can now receive `ref` as a regular prop. `forwardRef` is no longer needed:
+
+```tsx
+// Before (React 18)
+import { forwardRef } from "react";
+
+const Input = forwardRef<TextInput, Props>((props, ref) => {
+  return <TextInput ref={ref} {...props} />;
+});
+
+// After (React 19)
+function Input({ ref, ...props }: Props & { ref?: React.Ref<TextInput> }) {
+  return <TextInput ref={ref} {...props} />;
+}
+```
+
+### Migration Steps
+
+1. Remove `forwardRef` wrapper
+2. Add `ref` to the props destructuring
+3. Update the type to include `ref?: React.Ref<T>`
+
+## Other React 19 Features
+
+- **Actions** — Functions that handle async transitions
+- **useOptimistic** — Optimistic UI updates
+- **useFormStatus** — Form submission state (web)
+- **Document Metadata** — Native `<title>` and `<meta>` support (web)
+
+## Cleanup Checklist
+
+When upgrading to SDK 54:
+
+- [ ] Replace `useContext` with `use`
+- [ ] Remove `.Provider` from Context components
+- [ ] Remove `forwardRef` wrappers, use `ref` prop instead

.agents/skills/upgrading-expo/references/react-compiler.md

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+# React Compiler
+
+React Compiler is stable in Expo SDK 54 and later. It automatically memoizes components and hooks, eliminating the need for manual `useMemo`, `useCallback`, and `React.memo`.
+
+## Enabling React Compiler
+
+Add to `app.json`:
+
+```json
+{
+  "expo": {
+    "experiments": {
+      "reactCompiler": true
+    }
+  }
+}
+```
+
+## What React Compiler Does
+
+- Automatically memoizes components and values
+- Eliminates unnecessary re-renders
+- Removes the need for manual `useMemo` and `useCallback`
+- Works with existing code without modifications
+
+## Cleanup After Enabling
+
+Once React Compiler is enabled, you can remove manual memoization:
+
+```tsx
+// Before (manual memoization)
+const memoizedValue = useMemo(() => computeExpensive(a, b), [a, b]);
+const memoizedCallback = useCallback(() => doSomething(a), [a]);
+const MemoizedComponent = React.memo(MyComponent);
+
+// After (React Compiler handles it)
+const value = computeExpensive(a, b);
+const callback = () => doSomething(a);
+// Just use MyComponent directly
+```
+
+## Requirements
+
+- Expo SDK 54 or later
+- New Architecture enabled (default in SDK 54+)
+
+## Verifying It's Working
+
+React Compiler runs at build time. Check the Metro bundler output for compilation messages. You can also use React DevTools to verify components are being optimized.
+
+## Troubleshooting
+
+If you encounter issues:
+
+1. Ensure New Architecture is enabled
+2. Clear Metro cache: `npx expo start --clear`
+3. Check for incompatible patterns in your code (rare)
+
+React Compiler is designed to work with idiomatic React code. If it can't safely optimize a component, it skips that component without breaking your app.

.agents/skills/upgrading-expo/references/react-navigation-to-expo-router.md

@@ -0,0 +1,61 @@
+# Migrating from react-navigation to expo-router
+
+In SDK 56+, application code must not import from `@react-navigation/*` directly. Repoint those imports to the matching `expo-router` entry points. Runtime API is unchanged — only the module specifiers move.
+
+## Steps
+
+1. Prefer the automated codemod (see below). If it is not viable, fall back to the manual mapping.
+2. Replace imports using the table. Use the entry point that matches the `@react-navigation/*` source.
+3. After rewriting, check whether any of the rewritten imports are deprecated in `expo-router` (see [Check for deprecated imports](#check-for-deprecated-imports)). If so, surface the deprecation reason and the suggested replacement to the user before continuing.
+4. Validate: search for remaining `@react-navigation/` references in source files, then run typecheck/build/start.
+5. Remove `@react-navigation/*` packages that are no longer imported from `package.json` and reinstall (delete `node_modules` if needed).
+
+## Automated migration (preferred)
+
+Run from the project root over your application code (replace `src` with the actual directory or glob):
+
+```sh
+npx expo-codemod sdk-56-expo-router-react-navigation-replace src
+```
+
+```sh
+npx expo-codemod sdk-56-expo-router-react-navigation-replace '**/*.{ts,tsx,js,jsx}'
+```
+
+## Manual API mapping
+
+| React Navigation source               | Expo Router target                                                       |
+| ------------------------------------- | ------------------------------------------------------------------------ |
+| `@react-navigation/native`            | `expo-router/react-navigation`                                           |
+| `@react-navigation/core`              | `expo-router/react-navigation`                                           |
+| `@react-navigation/elements`          | `expo-router/react-navigation`                                           |
+| `@react-navigation/routers`           | `expo-router/react-navigation`                                           |
+| `@react-navigation/stack`             | `expo-router/js-stack`                                                   |
+| `@react-navigation/bottom-tabs`       | `expo-router/js-tabs`                                                    |
+| `@react-navigation/material-top-tabs` | `expo-router/js-top-tabs`                                                |
+| `@react-navigation/native-stack`      | No direct equivalent. Use the `Stack` layout from `expo-router` instead. |
+
+**Stack caveat:** Do NOT rewrite `import { Stack } from "expo-router"` to `expo-router/js-stack`. The root `Stack` is the Expo Router layout component used in route files; only use `expo-router/js-stack` when replacing a `@react-navigation/stack` JS stack navigator.
+
+If you encounter a symbol that has no replacement, ask the user to file an issue in the `expo/expo` repository describing what is needed and why.
+
+## Check for deprecated imports
+
+A successful rewrite to `expo-router/*` does not guarantee the new import is the recommended one. Some symbols are re-exported as deprecated shims and the project may need to migrate further (for example, to a different `expo-router` API or to a first-party Expo package).
+
+For each symbol rewritten in step 2:
+
+1. Resolve the rewritten module to its source in `node_modules` (e.g., `node_modules/expo-router/build/react-navigation.d.ts`, `js-stack`, `js-tabs`, `js-top-tabs`).
+2. Look for a `@deprecated` JSDoc tag on the named export, or a runtime deprecation warning in the implementation file.
+3. If deprecated, capture both the reason and the recommended replacement from the JSDoc/comment.
+4. Report each deprecated symbol to the user with: the import path, the symbol, the deprecation reason, and the suggested replacement. Wait for the user to confirm before mass-applying further changes.
+
+## Done when
+
+1. No `@react-navigation/*` imports remain in source files.
+2. No unused `@react-navigation/*` entries remain in `package.json`.
+3. Typecheck and bundler start without `@react-navigation/*` errors.
+
+## Reference
+
+- Official Expo Router SDK 55 → 56 migration guide: https://docs.expo.dev/router/migrate/sdk-55-to-56

apps/freya-backend/src/agent/conversation-recording-query-agent.test.ts

@@ -1,3 +1,4 @@
+import { ConversationEntryKind } from "@freya/core"
 import { describe, expect, test } from "bun:test"
 
 import type { AppendConversationEntryInput } from "../conversations/storage.ts"
@@ -6,7 +7,6 @@ import type {
 	ConversationStorageEntry,
 } from "./conversation-recording-query-agent.ts"
 
-import { ConversationEntryKind } from "../conversations/types.ts"
 import { ConversationRecordingQueryAgent } from "./conversation-recording-query-agent.ts"
 import {
 	createQueryAgentEventListeners,

apps/freya-backend/src/agent/conversation-recording-query-agent.ts

@@ -1,12 +1,13 @@
+import type { ConversationEntryMetadata } from "@freya/core"
+
+import { ConversationEntryKind } from "@freya/core"
 import { randomUUID } from "node:crypto"
 
 import type {
 	AppendConversationEntryInput,
 	ConversationEntryRow,
 } from "../conversations/storage.ts"
-import type { ConversationEntryMetadata } from "../conversations/types.ts"
 
-import { ConversationEntryKind } from "../conversations/types.ts"
 import {
 	createQueryAgentEventListeners,
 	QueryAgentEvent,
@@ -19,6 +20,7 @@ import {
 	type QueryAgentStreamEvent,
 } from "./query-agent.ts"
 
+/** Storage operations used to persist and replay query-agent conversation entries. */
 export interface ConversationStorage {
 	getOrCreateConversation(): Promise<{ id: string }>
 	appendEntry(
@@ -28,11 +30,13 @@ export interface ConversationStorage {
 	listEntries(conversationId: string): Promise<ConversationStorageEntry[]>
 }
 
+/** Minimal persisted entry shape needed by recording and replay agents. */
 export type ConversationStorageEntry = Pick<
 	ConversationEntryRow,
 	"id" | "sequence" | "kind" | "payload" | "metadata" | "createdAt"
 >
 
+/** Configuration for wrapping a QueryAgent with conversation recording. */
 export interface ConversationRecordingQueryAgentConfig {
 	agent: QueryAgent
 	storage: ConversationStorage

apps/freya-backend/src/agent/pi-query-agent.test.ts

@@ -1,9 +1,9 @@
+import { ConversationEntryKind } from "@freya/core"
 import { beforeEach, describe, expect, mock, test } from "bun:test"
 
 import type { QueryAgentToolbox } from "./query-agent-toolbox.ts"
 import type { QueryAgentStreamEvent } from "./query-agent.ts"
 
-import { ConversationEntryKind } from "../conversations/types.ts"
 import { QueryAgentEvent } from "./query-agent.ts"
 
 interface FakePiSession {

apps/freya-backend/src/agent/pi-query-agent.ts

@@ -33,13 +33,25 @@ import {
 import { createSessionManager } from "./session-manager.ts"
 import { createFreyaAgentTools, FREYA_AGENT_TOOL_NAMES } from "./tools.ts"
 
+/** Active Pi SDK session instance returned by createAgentSession. */
 type PiSession = Awaited<ReturnType<typeof createAgentSession>>["session"]
+
+/** Pi event emitted when a message finishes. */
 type PiMessageEndEvent = Extract<AgentSessionEvent, { type: "message_end" }>
+
+/** Message payload carried by Pi's message-end event. */
 type PiAgentMessage = PiMessageEndEvent["message"]
+
+/** Pi event emitted when an agent run finishes. */
 type PiAgentEndEvent = Extract<AgentSessionEvent, { type: "agent_end" }>
+
+/** Session manager created for Pi conversation replay. */
 type PiSessionManager = ReturnType<typeof createSessionManager>
+
+/** Message shape accepted by the replay session manager. */
 type PiSessionMessage = Parameters<PiSessionManager["appendMessage"]>[0]
 
+/** Configuration for the Pi-backed query agent. */
 export interface PiQueryAgentConfig {
 	toolbox: QueryAgentToolbox
 	apiKey?: string

apps/freya-backend/src/agent/session-manager.test.ts

@@ -1,8 +1,8 @@
+import { ConversationEntryKind } from "@freya/core"
 import { describe, expect, test } from "bun:test"
 
 import type { ConversationStorageEntry } from "./conversation-recording-query-agent.ts"
 
-import { ConversationEntryKind } from "../conversations/types.ts"
 import { createSessionManager } from "./session-manager.ts"
 
 describe("createSessionManager", () => {

apps/freya-backend/src/agent/session-manager.ts

@@ -1,18 +1,21 @@
 import { SessionManager } from "@earendil-works/pi-coding-agent"
-import { tmpdir } from "node:os"
-
-import type { ConversationStorageEntry } from "./conversation-recording-query-agent.ts"
-
 import {
 	AssistantMessagePayload,
 	ContextSummaryPayload,
 	ConversationEntryKind,
 	UserMessagePayload,
-} from "../conversations/types.ts"
+} from "@freya/core"
+import { tmpdir } from "node:os"
 
+import type { ConversationStorageEntry } from "./conversation-recording-query-agent.ts"
+
+/** Message shape accepted by Pi's SessionManager.appendMessage API. */
 type PiMessage = Parameters<SessionManager["appendMessage"]>[0]
+
+/** Assistant message variant required when replaying stored assistant entries. */
 type PiAssistantMessage = Extract<PiMessage, { role: "assistant" }>
 
+/** Inputs required to rebuild a Pi session manager from stored conversation entries. */
 export interface CreateSessionManagerInput {
 	cwd?: string
 	entries: ConversationStorageEntry[]

apps/freya-backend/src/conversations/errors.ts

@@ -0,0 +1,11 @@
+export class ConversationNotFoundError extends Error {
+	readonly conversationId: string
+	readonly userId: string
+
+	constructor(conversationId: string, userId: string) {
+		super(`Conversation "${conversationId}" not found for user "${userId}"`)
+		this.name = "ConversationNotFoundError"
+		this.conversationId = conversationId
+		this.userId = userId
+	}
+}

apps/freya-backend/src/conversations/http.test.ts

@@ -1,21 +1,55 @@
+import { ConversationEntryKind, ConversationEntryVisibility } from "@freya/core"
 import { beforeEach, describe, expect, mock, test } from "bun:test"
 import { Hono } from "hono"
 
 import type { Database } from "../db/index.ts"
-import type { ConversationRow } from "./storage.ts"
+import type {
+	ConversationEntryRow,
+	ConversationRow,
+	ListConversationEntriesParams,
+} from "./storage.ts"
 
 import { mockAuthSessionMiddleware } from "../auth/session-middleware.ts"
+import { ConversationNotFoundError } from "./errors.ts"
 import { registerConversationsHttpHandlers } from "./http.ts"
 
 const MockUserId = "k7Gx2mPqRvNwYs9TdLfA4bHcJeUo1iZn"
+const ConversationId = "11111111-1111-4111-8111-111111111111"
+const MissingConversationId = "22222222-2222-4222-8222-222222222222"
 
 const conversationRowsByUser = new Map<string, ConversationRow[]>()
+const conversationEntryRowsByUserAndConversation = new Map<string, ConversationEntryRow[]>()
+const listEntriesCalls: Array<{
+	userId: string
+	conversationId: string
+	params: ListConversationEntriesParams
+}> = []
 
 mock.module("./storage.ts", () => ({
 	conversations: (_db: Database, userId: string) => ({
 		async listConversations(): Promise<ConversationRow[]> {
 			return conversationRowsByUser.get(userId) ?? []
 		},
+
+		async listEntries(
+			conversationId: string,
+			params: ListConversationEntriesParams = {},
+		): Promise<ConversationEntryRow[]> {
+			listEntriesCalls.push({ userId, conversationId, params })
+
+			const rows = conversationEntryRowsByUserAndConversation.get(
+				conversationEntriesKey(userId, conversationId),
+			)
+			if (!rows) {
+				throw new ConversationNotFoundError(conversationId, userId)
+			}
+
+			if (params.visibility) {
+				return rows.filter((row) => row.visibility === params.visibility)
+			}
+
+			return rows
+		},
 	}),
 }))
 
@@ -44,9 +78,39 @@ function createConversationRow(
 	}
 }
 
+function createConversationEntryRow(
+	id: string,
+	conversationId: string,
+	sequence: number,
+	kind: ConversationEntryRow["kind"],
+	visibility: ConversationEntryRow["visibility"],
+	payload: ConversationEntryRow["payload"],
+	createdAt: string,
+	metadata: ConversationEntryRow["metadata"] = {},
+	fileId: string | null = null,
+): ConversationEntryRow {
+	return {
+		id,
+		conversationId,
+		sequence,
+		kind,
+		visibility,
+		fileId,
+		payload,
+		metadata,
+		createdAt: new Date(createdAt),
+	}
+}
+
+function conversationEntriesKey(userId: string, conversationId: string): string {
+	return `${userId}:${conversationId}`
+}
+
 describe("GET /api/conversations", () => {
 	beforeEach(() => {
 		conversationRowsByUser.clear()
+		conversationEntryRowsByUserAndConversation.clear()
+		listEntriesCalls.length = 0
 	})
 
 	test("returns 401 without auth", async () => {
@@ -108,3 +172,162 @@ describe("GET /api/conversations", () => {
 		})
 	})
 })
+
+describe("GET /api/conversations/:id/entries", () => {
+	beforeEach(() => {
+		conversationRowsByUser.clear()
+		conversationEntryRowsByUserAndConversation.clear()
+		listEntriesCalls.length = 0
+	})
+
+	test("returns 401 without auth", async () => {
+		const app = buildTestApp()
+
+		const res = await app.request("/api/conversations/conversation-1/entries")
+
+		expect(res.status).toBe(401)
+	})
+
+	test("returns user-visible entries for the authenticated user", async () => {
+		conversationEntryRowsByUserAndConversation.set(
+			conversationEntriesKey(MockUserId, ConversationId),
+			[
+				createConversationEntryRow(
+					"entry-user",
+					ConversationId,
+					1,
+					ConversationEntryKind.UserMessage,
+					ConversationEntryVisibility.UserVisible,
+					{
+						role: "user",
+						parts: [{ type: "text", text: "What is on today?" }],
+					},
+					"2026-06-17T09:30:00.000Z",
+				),
+				createConversationEntryRow(
+					"entry-tool",
+					ConversationId,
+					2,
+					ConversationEntryKind.ToolCall,
+					ConversationEntryVisibility.Internal,
+					{
+						toolName: "freya_list_context",
+						input: {},
+					},
+					"2026-06-17T09:30:01.000Z",
+				),
+				createConversationEntryRow(
+					"entry-assistant",
+					ConversationId,
+					3,
+					ConversationEntryKind.AssistantMessage,
+					ConversationEntryVisibility.UserVisible,
+					{
+						role: "assistant",
+						parts: [{ type: "text", text: "You have two calendar events." }],
+					},
+					"2026-06-17T09:30:02.000Z",
+					{ runId: "run-1" },
+				),
+			],
+		)
+		const app = buildTestApp("user-1")
+
+		const res = await app.request(`/api/conversations/${ConversationId}/entries`)
+
+		expect(res.status).toBe(200)
+		expect(listEntriesCalls).toEqual([
+			{
+				userId: MockUserId,
+				conversationId: ConversationId,
+				params: { visibility: ConversationEntryVisibility.UserVisible },
+			},
+		])
+
+		const body = (await res.json()) as { entries: unknown[] }
+		expect(body).toEqual({
+			entries: [
+				{
+					id: "entry-user",
+					conversationId: ConversationId,
+					sequence: 1,
+					kind: ConversationEntryKind.UserMessage,
+					visibility: ConversationEntryVisibility.UserVisible,
+					fileId: null,
+					payload: {
+						role: "user",
+						parts: [{ type: "text", text: "What is on today?" }],
+					},
+					metadata: {},
+					createdAt: "2026-06-17T09:30:00.000Z",
+				},
+				{
+					id: "entry-assistant",
+					conversationId: ConversationId,
+					sequence: 3,
+					kind: ConversationEntryKind.AssistantMessage,
+					visibility: ConversationEntryVisibility.UserVisible,
+					fileId: null,
+					payload: {
+						role: "assistant",
+						parts: [{ type: "text", text: "You have two calendar events." }],
+					},
+					metadata: { runId: "run-1" },
+					createdAt: "2026-06-17T09:30:02.000Z",
+				},
+			],
+		})
+	})
+
+	test("returns an empty list when the conversation has no user-visible entries", async () => {
+		conversationEntryRowsByUserAndConversation.set(
+			conversationEntriesKey(MockUserId, ConversationId),
+			[
+				createConversationEntryRow(
+					"entry-tool",
+					ConversationId,
+					1,
+					ConversationEntryKind.ToolResult,
+					ConversationEntryVisibility.Internal,
+					{ toolCallId: "call-1", output: { ok: true } },
+					"2026-06-17T09:30:00.000Z",
+				),
+			],
+		)
+		const app = buildTestApp("user-1")
+
+		const res = await app.request(`/api/conversations/${ConversationId}/entries`)
+
+		expect(res.status).toBe(200)
+		const body = (await res.json()) as { entries: unknown[] }
+		expect(body).toEqual({ entries: [] })
+	})
+
+	test("returns 404 for malformed conversation ids without querying storage", async () => {
+		const app = buildTestApp("user-1")
+
+		const res = await app.request("/api/conversations/missing-conversation/entries")
+
+		expect(res.status).toBe(404)
+		expect(listEntriesCalls).toEqual([])
+		const body = (await res.json()) as { error: string }
+		expect(body).toEqual({ error: "Conversation not found" })
+	})
+
+	test("returns 404 when the conversation does not exist for the user", async () => {
+		const app = buildTestApp("user-1")
+
+		const res = await app.request(`/api/conversations/${MissingConversationId}/entries`)
+
+		expect(res.status).toBe(404)
+		expect(listEntriesCalls).toEqual([
+			{
+				userId: MockUserId,
+				conversationId: MissingConversationId,
+				params: { visibility: ConversationEntryVisibility.UserVisible },
+			},
+		])
+		const body = (await res.json()) as { error: string }
+		expect(body).toEqual({ error: "Conversation not found" })
+	})
+})

apps/freya-backend/src/conversations/http.ts

@@ -1,23 +1,38 @@
 import type { Context, Hono } from "hono"
 
+import { ConversationEntryVisibility } from "@freya/core"
+import { type } from "arktype"
 import { createMiddleware } from "hono/factory"
 
 import type { AuthSessionMiddleware } from "../auth/session-middleware.ts"
 import type { Database } from "../db/index.ts"
+import type { ConversationRow } from "./storage.ts"
 
+import { ConversationNotFoundError } from "./errors.ts"
 import { conversations } from "./storage.ts"
 
+/** Hono environment populated by the conversations route middleware. */
 type Env = {
 	Variables: {
 		db: Database
 	}
 }
 
+/** Serialized conversation summary returned by the list endpoint. */
+interface ConversationSummaryResponse {
+	id: string
+	createdAt: string
+	updatedAt: string
+}
+
+/** Dependencies required to register conversation HTTP handlers. */
 interface ConversationsHttpHandlersDeps {
 	db: Database
 	authSessionMiddleware: AuthSessionMiddleware
 }
 
+const ConversationIdParam = type("string.uuid")
+
 export function registerConversationsHttpHandlers(
 	app: Hono,
 	{ db, authSessionMiddleware }: ConversationsHttpHandlersDeps,
@@ -28,6 +43,7 @@ export function registerConversationsHttpHandlers(
 	})
 
 	app.get("/api/conversations", inject, authSessionMiddleware, handleListConversations)
+	app.get("/api/conversations/:id/entries", inject, authSessionMiddleware, handleListEntries)
 }
 
 async function handleListConversations(c: Context<Env>) {
@@ -35,10 +51,54 @@ async function handleListConversations(c: Context<Env>) {
 	const db = c.get("db")
 
 	return c.json({
-		conversations: (await conversations(db, user.id).listConversations()).map((row) => ({
-			id: row.id,
-			createdAt: row.createdAt.toISOString(),
-			updatedAt: row.updatedAt.toISOString(),
-		})),
+		conversations: (await conversations(db, user.id).listConversations()).map(
+			serializeConversation,
+		),
 	})
 }
+
+async function handleListEntries(c: Context<Env>) {
+	const user = c.get("user")!
+	const db = c.get("db")
+	const conversationId = c.req.param("id")
+	if (!conversationId) {
+		return c.json({ error: "Conversation not found" }, 404)
+	}
+	const parsedConversationId = ConversationIdParam(conversationId)
+	if (parsedConversationId instanceof type.errors) {
+		return c.json({ error: "Conversation not found" }, 404)
+	}
+
+	try {
+		const entries = await conversations(db, user.id).listEntries(parsedConversationId, {
+			visibility: ConversationEntryVisibility.UserVisible,
+		})
+
+		return c.json({
+			entries: entries.map((row) => ({
+				id: row.id,
+				conversationId: row.conversationId,
+				sequence: row.sequence,
+				kind: row.kind,
+				visibility: row.visibility,
+				fileId: row.fileId,
+				payload: row.payload,
+				metadata: row.metadata,
+				createdAt: row.createdAt.toISOString(),
+			})),
+		})
+	} catch (err) {
+		if (err instanceof ConversationNotFoundError) {
+			return c.json({ error: "Conversation not found" }, 404)
+		}
+		throw err
+	}
+}
+
+function serializeConversation(row: ConversationRow): ConversationSummaryResponse {
+	return {
+		id: row.id,
+		createdAt: row.createdAt.toISOString(),
+		updatedAt: row.updatedAt.toISOString(),
+	}
+}

apps/freya-backend/src/conversations/storage.ts

@@ -1,17 +1,18 @@
+import {
+	AssistantMessagePayload,
+	AttachmentPayload,
+	ConversationEntryKind,
+	ConversationEntryVisibility,
+	ContextSummaryPayload,
+	ConversationEntryMetadata,
+	GenericObjectPayload,
+	UserMessagePayload,
+	type ConversationEntryPayload,
+} from "@freya/core"
+import { type } from "arktype"
 import { and, asc, desc, eq } from "drizzle-orm"
 
 import type { Database } from "../db/index.ts"
-import type {
-	AssistantMessagePayload,
-	AttachmentPayload,
-	ContextSummaryPayload,
-	ConversationEntryKind as ConversationEntryKindType,
-	ConversationEntryMetadata,
-	ConversationEntryPayload,
-	ConversationEntryVisibility as ConversationEntryVisibilityType,
-	GenericObjectPayload,
-	UserMessagePayload,
-} from "./types.ts"
 
 import {
 	conversationEntries,
@@ -19,23 +20,21 @@ import {
 	files,
 	user,
 } from "../db/schema.ts"
-import {
-	ConversationEntryMetadata as ConversationEntryMetadataSchema,
-	AssistantMessagePayload as AssistantMessagePayloadSchema,
-	AttachmentPayload as AttachmentPayloadSchema,
-	ConversationEntryKind,
-	ConversationEntryKindInput,
-	ConversationEntryVisibility,
-	ConversationEntryVisibilityInput,
-	ContextSummaryPayload as ContextSummaryPayloadSchema,
-	GenericObjectPayload as GenericObjectPayloadSchema,
-	UserMessagePayload as UserMessagePayloadSchema,
-} from "./types.ts"
+import { ConversationNotFoundError } from "./errors.ts"
 
+const conversationEntryKind = type.enumerated(...Object.values(ConversationEntryKind))
+const conversationEntryVisibility = type.enumerated(...Object.values(ConversationEntryVisibility))
+
+/** Database row shape for a conversation owned by a user. */
 export type ConversationRow = typeof conversationsTable.$inferSelect
+
+/** Database row shape for an entry in a conversation timeline. */
 export type ConversationEntryRow = typeof conversationEntries.$inferSelect
+
+/** Database row shape for an uploaded file referenced by conversations. */
 export type FileRow = typeof files.$inferSelect
 
+/** Input required to create a stored file record. */
 export interface CreateFileInput {
 	storageKey: string
 	originalName?: string
@@ -44,23 +43,27 @@ export interface CreateFileInput {
 	metadata?: Record<string, unknown>
 }
 
+/** Input for creating a file and appending its attachment entry together. */
 export interface AppendAttachmentEntryInput {
 	file: CreateFileInput
 	payload: AttachmentPayload
-	visibility?: ConversationEntryVisibilityType
+	visibility?: ConversationEntryVisibility
 	metadata?: ConversationEntryMetadata
 }
 
+/** Result returned after a file-backed attachment entry is appended. */
 export interface AppendAttachmentEntryResult {
 	file: FileRow
 	entry: ConversationEntryRow
 }
 
+/** Common fields accepted when appending any conversation entry. */
 interface AppendConversationEntryBase {
-	visibility?: ConversationEntryVisibilityType
+	visibility?: ConversationEntryVisibility
 	metadata?: ConversationEntryMetadata
 }
 
+/** Discriminated input for appending any supported entry kind to a conversation. */
 export type AppendConversationEntryInput =
 	| (AppendConversationEntryBase & {
 			kind: typeof ConversationEntryKind.UserMessage
@@ -91,12 +94,13 @@ export type AppendConversationEntryInput =
 			fileId?: never
 	  })
 
+/** Filters accepted when listing conversation entries. */
 export interface ListConversationEntriesParams {
-	visibility?: ConversationEntryVisibilityType
+	visibility?: ConversationEntryVisibility
 }
 
 export function conversations(db: Database, userId: string) {
-	return {
+	const storage = {
 		async createConversation(): Promise<ConversationRow> {
 			return insertConversation(db, userId)
 		},
@@ -109,6 +113,18 @@ export function conversations(db: Database, userId: string) {
 				.orderBy(desc(conversationsTable.updatedAt), desc(conversationsTable.createdAt))
 		},
 
+		async getConversation(conversationId: string): Promise<ConversationRow | null> {
+			const rows = await db
+				.select()
+				.from(conversationsTable)
+				.where(
+					and(eq(conversationsTable.id, conversationId), eq(conversationsTable.userId, userId)),
+				)
+				.limit(1)
+
+			return rows[0] ?? null
+		},
+
 		async getOrCreateConversation(): Promise<ConversationRow> {
 			return db.transaction(async (tx) => {
 				await requireUserForUpdate(tx, userId)
@@ -127,12 +143,12 @@ export function conversations(db: Database, userId: string) {
 			conversationId: string,
 			input: AppendConversationEntryInput,
 		): Promise<ConversationEntryRow> {
-			const kind = ConversationEntryKindInput.assert(input.kind)
-			const visibility = ConversationEntryVisibilityInput.assert(
+			const kind = conversationEntryKind.assert(input.kind)
+			const visibility = conversationEntryVisibility.assert(
 				input.visibility ?? defaultVisibilityForKind(kind),
 			)
 			const payload = payloadForKind(kind, input.payload)
-			const metadata = ConversationEntryMetadataSchema.assert(input.metadata ?? {})
+			const metadata = ConversationEntryMetadata.assert(input.metadata ?? {})
 			let fileId: string | null = null
 
 			if (input.kind === ConversationEntryKind.Attachment) {
@@ -141,7 +157,9 @@ export function conversations(db: Database, userId: string) {
 			}
 
 			const rows = await db.transaction(async (tx) => {
-				await requireConversationForUpdate(tx, userId, conversationId)
+				if (!(await findConversationForUpdate(tx, userId, conversationId))) {
+					throw new ConversationNotFoundError(conversationId, userId)
+				}
 				const sequence = await nextSequence(tx, conversationId)
 
 				const rows = await tx
@@ -168,14 +186,16 @@ export function conversations(db: Database, userId: string) {
 			conversationId: string,
 			input: AppendAttachmentEntryInput,
 		): Promise<AppendAttachmentEntryResult> {
-			const payload = AttachmentPayloadSchema.assert(input.payload)
-			const visibility = ConversationEntryVisibilityInput.assert(
+			const payload = AttachmentPayload.assert(input.payload)
+			const visibility = conversationEntryVisibility.assert(
 				input.visibility ?? defaultVisibilityForKind(ConversationEntryKind.Attachment),
 			)
-			const metadata = ConversationEntryMetadataSchema.assert(input.metadata ?? {})
+			const metadata = ConversationEntryMetadata.assert(input.metadata ?? {})
 
 			return db.transaction(async (tx) => {
-				await requireConversationForUpdate(tx, userId, conversationId)
+				if (!(await findConversationForUpdate(tx, userId, conversationId))) {
+					throw new ConversationNotFoundError(conversationId, userId)
+				}
 
 				const file = await insertFile(tx, userId, input.file)
 				const sequence = await nextSequence(tx, conversationId)
@@ -204,7 +224,9 @@ export function conversations(db: Database, userId: string) {
 			conversationId: string,
 			params: ListConversationEntriesParams = {},
 		): Promise<ConversationEntryRow[]> {
-			await requireConversation(db, userId, conversationId)
+			if (!(await storage.getConversation(conversationId))) {
+				throw new ConversationNotFoundError(conversationId, userId)
+			}
 
 			if (params.visibility) {
 				return db
@@ -226,25 +248,27 @@ export function conversations(db: Database, userId: string) {
 				.orderBy(asc(conversationEntries.sequence))
 		},
 	}
+
+	return storage
 }
 
 function payloadForKind(
-	kind: ConversationEntryKindType,
+	kind: ConversationEntryKind,
 	payload: AppendConversationEntryInput["payload"],
 ): ConversationEntryPayload {
 	switch (kind) {
 		case ConversationEntryKind.UserMessage:
-			return UserMessagePayloadSchema.assert(payload)
+			return UserMessagePayload.assert(payload)
 		case ConversationEntryKind.AssistantMessage:
-			return AssistantMessagePayloadSchema.assert(payload)
+			return AssistantMessagePayload.assert(payload)
 		case ConversationEntryKind.Attachment:
-			return AttachmentPayloadSchema.assert(payload)
+			return AttachmentPayload.assert(payload)
 		case ConversationEntryKind.ContextSummary:
-			return ContextSummaryPayloadSchema.assert(payload)
+			return ContextSummaryPayload.assert(payload)
 		case ConversationEntryKind.ToolCall:
 		case ConversationEntryKind.ToolResult:
 		case ConversationEntryKind.SystemNote:
-			return GenericObjectPayloadSchema.assert(payload)
+			return GenericObjectPayload.assert(payload)
 	}
 }
 
@@ -259,25 +283,11 @@ async function requireUserForUpdate(db: Database, userId: string): Promise<void>
 	requireRow(rows, `User not found: ${userId}`)
 }
 
-async function requireConversation(
+async function findConversationForUpdate(
 	db: Database,
 	userId: string,
 	conversationId: string,
-): Promise<ConversationRow> {
-	const rows = await db
-		.select()
-		.from(conversationsTable)
-		.where(and(eq(conversationsTable.id, conversationId), eq(conversationsTable.userId, userId)))
-		.limit(1)
-
-	return requireRow(rows, `Conversation not found: ${conversationId}`)
-}
-
-async function requireConversationForUpdate(
-	db: Database,
-	userId: string,
-	conversationId: string,
-): Promise<ConversationRow> {
+): Promise<ConversationRow | null> {
 	const rows = await db
 		.select()
 		.from(conversationsTable)
@@ -285,7 +295,7 @@ async function requireConversationForUpdate(
 		.limit(1)
 		.for("update")
 
-	return requireRow(rows, `Conversation not found: ${conversationId}`)
+	return rows[0] ?? null
 }
 
 async function latestConversation(db: Database, userId: string): Promise<ConversationRow | null> {
@@ -364,9 +374,7 @@ function requireRow<T>(rows: T[], message = "Expected database row"): T {
 	return row
 }
 
-function defaultVisibilityForKind(
-	kind: ConversationEntryKindType,
-): ConversationEntryVisibilityType {
+function defaultVisibilityForKind(kind: ConversationEntryKind): ConversationEntryVisibility {
 	switch (kind) {
 		case ConversationEntryKind.UserMessage:
 		case ConversationEntryKind.AssistantMessage:

apps/freya-backend/src/db/schema.ts

@@ -1,3 +1,10 @@
+import {
+	ConversationEntryVisibility,
+	type ConversationEntryKind,
+	type ConversationEntryMetadata,
+	type ConversationEntryPayload,
+	type ConversationEntryVisibility as ConversationEntryVisibilityType,
+} from "@freya/core"
 import { sql } from "drizzle-orm"
 import {
 	boolean,
@@ -13,14 +20,6 @@ import {
 	uuid,
 } from "drizzle-orm/pg-core"
 
-import {
-	ConversationEntryVisibility,
-	type ConversationEntryKind,
-	type ConversationEntryMetadata,
-	type ConversationEntryPayload,
-	type ConversationEntryVisibility as ConversationEntryVisibilityType,
-} from "../conversations/types.ts"
-
 // ---------------------------------------------------------------------------
 // Better Auth core tables
 // Re-exported from CLI-generated schema.

apps/freya-backend/src/server.ts

@@ -11,6 +11,7 @@ import { registerAuthHandlers } from "./auth/http.ts"
 import { createAuth } from "./auth/index.ts"
 import { createRequireSession } from "./auth/session-middleware.ts"
 import { CalDavSourceProvider } from "./caldav/provider.ts"
+import { registerConversationsHttpHandlers } from "./conversations/http.ts"
 import { createDatabase } from "./db/index.ts"
 import { registerFeedHttpHandlers } from "./engine/http.ts"
 import { createFeedEnhancer } from "./enhancement/enhance-feed.ts"
@@ -129,6 +130,7 @@ function main() {
 		sessionManager,
 		authSessionMiddleware,
 	})
+	registerConversationsHttpHandlers(app, { db, authSessionMiddleware })
 	if (isDebugMode) {
 		registerDebugAgentHttpHandlers(app, {
 			authSessionMiddleware,

apps/freya-backend/src/session/user-session-manager.test.ts

@@ -1,5 +1,6 @@
 import type { ActionDefinition, ContextEntry, FeedItem, FeedSource } from "@freya/core"
 
+import { ConversationEntryKind } from "@freya/core"
 import { LocationSource } from "@freya/source-location"
 import { WeatherSource } from "@freya/source-weatherkit"
 import { beforeEach, describe, expect, mock, spyOn, test } from "bun:test"
@@ -9,7 +10,6 @@ import type { AppendConversationEntryInput } from "../conversations/storage.ts"
 import type { Database } from "../db/index.ts"
 import type { FeedSourceProvider } from "./feed-source-provider.ts"
 
-import { ConversationEntryKind } from "../conversations/types.ts"
 import { CredentialEncryptor } from "../lib/crypto.ts"
 import {
 	CredentialStorageUnavailableError,

apps/freya-backend/src/session/user-session.test.ts

@@ -1,5 +1,6 @@
 import type { ActionDefinition, ContextEntry, FeedItem, FeedSource } from "@freya/core"
 
+import { ConversationEntryKind } from "@freya/core"
 import { LocationSource } from "@freya/source-location"
 import { describe, expect, spyOn, test } from "bun:test"
 
@@ -9,7 +10,6 @@ import type {
 } from "../agent/conversation-recording-query-agent.ts"
 import type { AppendConversationEntryInput } from "../conversations/storage.ts"
 
-import { ConversationEntryKind } from "../conversations/types.ts"
 import { UserSession } from "./user-session.ts"
 
 function createStubSource(id: string, items: FeedItem[] = []): FeedSource {

bun.lock

@@ -172,6 +172,7 @@
       "version": "0.0.0",
       "dependencies": {
         "@standard-schema/spec": "^1.1.0",
+        "arktype": "^2.1.29",
       },
       "peerDependencies": {
         "@json-render/core": "*",

packages/freya-core/package.json

@@ -8,7 +8,8 @@
 		"test": "bun test ."
 	},
 	"dependencies": {
-		"@standard-schema/spec": "^1.1.0"
+		"@standard-schema/spec": "^1.1.0",
+		"arktype": "^2.1.29"
 	},
 	"peerDependencies": {
 		"@json-render/core": "*",

packages/freya-core/src/conversation.test.ts

@@ -7,7 +7,7 @@ import {
 	ConversationEntryMetadata,
 	GenericObjectPayload,
 	UserMessagePayload,
-} from "./types.ts"
+} from "./conversation"
 
 describe("conversation entry schemas", () => {
 	test("parses valid user message payloads", () => {

packages/freya-core/src/conversation.ts

@@ -1,5 +1,6 @@
 import { type } from "arktype"
 
+/** Entry kinds supported by the persisted conversation timeline. */
 export const ConversationEntryKind = {
 	UserMessage: "user_message",
 	AssistantMessage: "assistant_message",
@@ -10,17 +11,21 @@ export const ConversationEntryKind = {
 	SystemNote: "system_note",
 } as const
 
+/** Discriminator for the payload shape and handling of a conversation entry. */
 export type ConversationEntryKind =
 	(typeof ConversationEntryKind)[keyof typeof ConversationEntryKind]
 
+/** Visibility scopes supported by stored conversation entries. */
 export const ConversationEntryVisibility = {
 	UserVisible: "user_visible",
 	Internal: "internal",
 } as const
 
+/** Indicates whether a conversation entry should be exposed to the user. */
 export type ConversationEntryVisibility =
 	(typeof ConversationEntryVisibility)[keyof typeof ConversationEntryVisibility]
 
+/** Attachment media categories accepted by conversation entries. */
 export const AttachmentType = {
 	Image: "image",
 	Audio: "audio",
@@ -29,57 +34,64 @@ export const AttachmentType = {
 	Other: "other",
 } as const
 
+/** File or media category associated with an attachment payload. */
 export type AttachmentType = (typeof AttachmentType)[keyof typeof AttachmentType]
 
-export const ConversationEntryKindInput = type.enumerated(...Object.values(ConversationEntryKind))
-export const ConversationEntryVisibilityInput = type.enumerated(
-	...Object.values(ConversationEntryVisibility),
-)
-export const AttachmentTypeInput = type.enumerated(...Object.values(AttachmentType))
-
-const TextMessagePart = type({
+/** Plain text content part for a message. */
+export const TextMessagePart = type({
 	"+": "reject",
 	type: "'text'",
 	text: "string",
 })
 
-const JsonMessagePart = type({
+/** Structured JSON content part for a message. */
+export const JsonMessagePart = type({
 	"+": "reject",
 	type: "'json'",
 	value: "unknown",
 })
 
+/** Content part variants supported by user and assistant messages. */
 export const MessagePart = type.or(TextMessagePart, JsonMessagePart)
+
+/** A structured content part inside a user or assistant message payload. */
 export type MessagePart = typeof MessagePart.infer
 
+/** User-authored message entry payload. */
 export const UserMessagePayload = type({
 	"+": "reject",
 	role: "'user'",
 	parts: MessagePart.array().atLeastLength(1),
 })
 
+/** Payload stored for a conversation entry containing a user message. */
 export type UserMessagePayload = typeof UserMessagePayload.infer
 
+/** Assistant-authored message entry payload. */
 export const AssistantMessagePayload = type({
 	"+": "reject",
 	role: "'assistant'",
 	parts: MessagePart.array().atLeastLength(1),
 })
 
+/** Payload stored for a conversation entry containing an assistant message. */
 export type AssistantMessagePayload = typeof AssistantMessagePayload.infer
 
+/** Attachment entry payload. */
 export const AttachmentPayload = type({
 	"+": "reject",
 	role: type.enumerated("user", "assistant"),
 	name: "string",
 	mimeType: "string",
-	attachmentType: AttachmentTypeInput,
+	attachmentType: type.enumerated(...Object.values(AttachmentType)),
 	"caption?": "string",
 })
 
+/** Payload stored for a conversation entry that references an uploaded file. */
 export type AttachmentPayload = typeof AttachmentPayload.infer
 
-const ContextSummary = type({
+/** Durable facts extracted from compacted conversation history. */
+export const ContextSummary = type({
 	"+": "reject",
 	"userIntent?": "string",
 	durableFacts: type.string.array(),
@@ -89,6 +101,10 @@ const ContextSummary = type({
 	importantDetails: type.string.array(),
 })
 
+/** Durable facts and follow-ups retained from compacted conversation history. */
+export type ContextSummary = typeof ContextSummary.infer
+
+/** Context-summary conversation entry payload. */
 export const ContextSummaryPayload = type({
 	"+": "reject",
 	covers: type({
@@ -101,8 +117,10 @@ export const ContextSummaryPayload = type({
 	"sourceEntryIds?": type.string.array(),
 })
 
+/** Payload describing a compaction summary and the sequence range it covers. */
 export type ContextSummaryPayload = typeof ContextSummaryPayload.infer
 
+/** Model invocation metadata recorded on generated entries. */
 export const ModelRunMetadata = type({
 	"+": "reject",
 	route: "string",
@@ -116,18 +134,25 @@ export const ModelRunMetadata = type({
 	"providerRequestId?": "string",
 })
 
+/** Metadata describing the model run that produced a conversation entry. */
 export type ModelRunMetadata = typeof ModelRunMetadata.infer
 
+/** Arbitrary metadata stored alongside conversation entries. */
 export const ConversationEntryMetadata = type({
 	"modelRun?": ModelRunMetadata,
 	"[string]": "unknown",
 })
 
+/** Metadata bag attached to a conversation entry. */
 export type ConversationEntryMetadata = typeof ConversationEntryMetadata.infer
 
+/** Generic object payload used by operational entries. */
 export const GenericObjectPayload = type("Record<string, unknown>")
+
+/** Fallback payload shape for tool calls, tool results, and system notes. */
 export type GenericObjectPayload = typeof GenericObjectPayload.infer
 
+/** Union of payload shapes that can be stored on a conversation entry. */
 export type ConversationEntryPayload =
 	| UserMessagePayload
 	| AssistantMessagePayload

packages/freya-core/src/index.ts

@@ -6,6 +6,25 @@ export { Context, contextKey, serializeKey } from "./context"
 export type { ActionDefinition } from "./action"
 export { UnknownActionError } from "./action"
 
+// Conversation
+export type { ConversationEntryPayload } from "./conversation"
+export {
+	AssistantMessagePayload,
+	AttachmentPayload,
+	AttachmentType,
+	ContextSummary,
+	ContextSummaryPayload,
+	ConversationEntryKind,
+	ConversationEntryMetadata,
+	ConversationEntryVisibility,
+	GenericObjectPayload,
+	JsonMessagePart,
+	MessagePart,
+	ModelRunMetadata,
+	TextMessagePart,
+	UserMessagePayload,
+} from "./conversation"
+
 // Feed
 export type { FeedItem, FeedItemRenderer, FeedItemSignals, RenderedFeedItem, Slot } from "./feed"
 export { TimeRelevance } from "./feed"

skills-lock.json

@@ -0,0 +1,11 @@
+{
+  "version": 1,
+  "skills": {
+    "upgrading-expo": {
+      "source": "expo/skills",
+      "sourceType": "github",
+      "skillPath": "plugins/expo/skills/upgrading-expo/SKILL.md",
+      "computedHash": "98d228925a442126789d90783fdd4ae5de33ab690024b575698057d2ffc44b40"
+    }
+  }
+}