DESIGN.md@docs · diff

git:20260615.02fce6b to git:20260907.ac56cda

3 added, 2 removed. Audit A to A.

# Design

AI App Bridge gives desktop agents a repeatable app loop across Android,

iOS, Flutter, WebView/H5/CDP, WKWebView, and desktop Web Bridge targets:

1. Observe structured app state.

2. Act on Android, Flutter, or H5 surfaces.

3. Read logs, network, state, events, view trees, widget trees, and DOM.

4. Decide the next action.

## Boundaries

- - Android runtime SDK: local HTTP bridge, Android View tree, native WebView DOM, capture buffers, public record APIs, foreground Activity tracking.

+ - Android runtime SDK: local HTTP bridge, Android View tree, native WebView DOM, `MobileCaptureStore` for logs/network/state/events, public record APIs, foreground Activity tracking.

- Android Gradle plugin: debug-only instrumentation such as OkHttp auto capture.

- Flutter plugin: WidgetInspector snapshots, runtime actions, Flutter log/network/state/event forwarding, Flutter H5 adapter registry.

- - iOS runtime SDK: UIKit tree, WKWebView DOM/eval, screenshot, log/network/state/event buffers, and Flutter iOS evidence forwarding.

+ - iOS runtime SDK: UIKit tree, WKWebView DOM/eval, screenshot, `MobileCaptureStore` for logs/network/state/events, and Flutter iOS evidence forwarding.

- Desktop Web SDK/provider: browser-page DOM/log/network/state/event evidence and whitelisted commands through Web Bridge sessions.

- Desktop CLI/MCP: ADB, UIAutomator, screenshots, device input, devicectl, WebDriverAgent/XCUITest, Web Bridge session hosting, port forwarding, and MCP command wrapping.

+ - Isolated MCP `script` and `intent` runtimes: Script executes trusted-local-code JavaScript or Python (`permissions` gate Bridge calls only; not an OS sandbox). Intent records observation, decision, action, and evidence refs. Host live paths read phone `logs` / `network` / `state` / `events` from `MobileCaptureStore` and do not copy those payloads. MCP `history:true` on those streams reads the phone FactStore while connected; disconnect returns `target_disconnected` and does not fall back to a Host-copied payload. iOS `state` over 200 keys uses a byte-bounded keyed LRU.

The core runtime must not depend on a business network stack or business page code.

## First Follow-Up

The Android, Flutter, iOS, WebView/H5, and Web Bridge surfaces can support an

AI loop by polling or session capture. The continuing infrastructure direction

is to keep a small MCP capability index visible while command-specific schemas

stay discoverable through `capabilities`.