diff --git a/AGENTS.md b/AGENTS.md
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+# Agent Development Guide
+
+For coding agents working in `recipe-client-rn-quickstart`. This repository is the
+**React Native client** recipe in the Agora Conversational AI recipes family — a bare
+React Native (TypeScript) app wired to a keyless Python FastAPI token backend.
+
+## How to Load
+
+This repository uses progressive disclosure documentation. Docs live under
+`docs/ai/` in three levels.
+
+1. Read [docs/ai/L0_repo_card.md](docs/ai/L0_repo_card.md) to identify the repo.
+2. This repo declares `Recipe Role: base`; read [docs/ai/RECIPE.md](docs/ai/RECIPE.md) before changing reusable recipe contracts.
+3. Load ALL 8 files in [docs/ai/L1/](docs/ai/L1/). They are small — load all upfront.
+4. Follow L2 deep-dive links only when L1 isn't detailed enough. The index is at [docs/ai/L1/L2/_index.md](docs/ai/L1/L2/_index.md).
+
+The sections below remain the canonical contributor handbook for hands-on work;
+the `docs/ai/` tree is the structured summary used by AI agents.
+
+## System shape
+
+- **`rn/`** — React Native 0.86 / TypeScript 5 app. Two Agora engine adapters
+  (`RtcEngineAdapter`, `RtmEngineAdapter`) implement the `agora-agent-client-toolkit`
+  interfaces over `react-native-agora` (RTC) and `agora-react-native-rtm` (RTM 2.x).
+  `AgoraSession` owns session lifecycle; `useCallStore` owns all React state.
+- **`server/`** — Python FastAPI token service (:8000). Owns Agora token generation and
+  a keyless cascading agent pipeline: `DeepgramSTT(nova-3)` → `OpenAI` (Agora-managed)
+  → `MiniMaxTTS`. SDK: `agora-agents>=2.3.0`. No `OPENAI_API_KEY` required by default.
+- Auth: Token007 from `AGORA_APP_ID` + `AGORA_APP_CERTIFICATE` in the backend.
+- Transcript delivery: `data_channel="rtm"` with `advanced_features={"enable_rtm": True}`.
+
+## Session ordering
+
+`RTM login → RTC join → AgoraVoiceAI.init → subscribeMessage → subscribeChannel → /startAgent`
+
+Both `ai.subscribeMessage(channel)` **and** `rtm.subscribeChannel(channel)` must run before
+`/startAgent`. The TS toolkit's `subscribeMessage` only binds listeners; RTM 2.x requires
+an explicit channel subscribe to deliver messages.
+
+## Routing / ownership
+
+- UI, RTC/RTM lifecycle, and session orchestration live in `rn/src/`.
+- Token generation and agent lifecycle live in `server/src/`.
+- The React Native app calls the backend directly over HTTP (no rewrite proxy — this is a
+  native app, not a browser). Backend URL is hardcoded in `rn/src/config.ts`.
+- Android emulator reaches the host backend at `10.0.2.2:8000`; iOS Simulator uses `localhost:8000`.
+
+## Supported modes
+
+- **Local:** start `server/` manually (`python src/server.py`) then run the RN app
+  (`npx react-native run-android` or `run-ios`).
+- **Deploy:** host the server behind HTTPS; update `AGENT_BACKEND_URL` in `rn/src/config.ts`
+  and use a real device. A backend image is published to
+  `ghcr.io/AgoraIO-Conversational-AI/recipe-client-rn-quickstart` on `v*` tags.
+
+## Env vars
+
+| Variable               | Default                | Notes |
+|------------------------|------------------------|-------|
+| `AGORA_APP_ID`         | —                      | **required** |
+| `AGORA_APP_CERTIFICATE`| —                      | **required** — server-only, never in the app |
+| `OPENAI_MODEL`         | `gpt-4o-mini`          | Agora-managed vendor model |
+| `OPENAI_API_KEY`       | — (keyless)            | Optional BYO; Agora manages by default |
+| `AGENT_GREETING`       | built-in line          | Override the opening utterance |
+
+## Patterns
+
+- Keep `AGORA_APP_CERTIFICATE` in `server/.env.local`; never pass it to the RN app.
+- Keep `data_channel="rtm"` and `advanced_features={"enable_rtm": True}` in the backend agent.
+- Always call both `ai.subscribeMessage(channel)` and `rtm.subscribeChannel(channel)` before `/startAgent`.
+- Use the `(turnId, type)` composite key for transcript upserts — `CallState.ts` owns this.
+
+## Anti-patterns
+
+- Do not embed `AGORA_APP_CERTIFICATE` or `OPENAI_API_KEY` in `rn/src/config.ts`, `app.json`, or native plists/manifests.
+- Do not remove `data_channel="rtm"` or `enable_rtm: True` — transcript delivery will silently stop.
+- Do not call `/startAgent` before `subscribeChannel` resolves — the agent greeting will be missed.
+- Do not skip `pod install` after `npm install` changes native packages on iOS.
+
+## Commands
+
+```bash
+# Backend
+cd server && python src/server.py
+
+# RN app
+cd rn && npx react-native run-android   # Android
+cd rn && npx react-native run-ios       # iOS (requires pod install first)
+
+# Tests
+cd rn && npx tsc --noEmit               # TypeScript check (no toolchain needed)
+cd rn && npm test                       # Jest unit tests (no server needed)
+cd rn/android && ./gradlew assembleDebug   # native Android build
+cd server && pytest -q                  # backend unit tests (no cloud, no creds)
+```
+
+## Done criteria
+
+1. Run `npx tsc --noEmit` (always) and `npm test` for any RN source change.
+2. For native dependency changes: run `pod install` (iOS) or `./gradlew assembleDebug` (Android).
+3. For backend changes: run `cd server && pytest -q`.
+4. If you change required env vars or setup steps, update the root README, `server/README.md`, and `server/.env.example` together.
+5. If the change touches workflows, interfaces, gotchas, or security details, update the matching file under [docs/ai/L1/](docs/ai/L1/) and bump `Last Reviewed` in [docs/ai/L0_repo_card.md](docs/ai/L0_repo_card.md).
+
+## Git Conventions
+
+### Commit messages — conventional commits
+
+- **Format:** `type: description` or `type(scope): description`
+- **Types:** `feat:` (new feature), `fix:` (bug fix), `chore:` (maintenance, version bumps), `test:` (test additions/changes), `docs:` (documentation)
+- **Scoped variant:** `feat(scope):`, `fix(scope):` — e.g. `fix(rn): correct rtm subscribe order`
+- **Lowercase after prefix** — `feat: add feature`, not `feat: Add feature`
+- **Present tense** — "add feature", not "added feature"
+
+### Branch names
+
+- **Format:** `type/short-description` — lowercase, hyphen-separated
+- **Types match commit types:** `feat/`, `fix/`, `chore/`, `test/`, `docs/`
+- **Examples:** `feat/add-settings-screen`, `fix/rtm-subscribe-order`, `docs/progressive-disclosure`
+
+### General rules
+
+- **Repo-local `AGENTS.md` is the authoritative source for repo conventions.**
+- **No AI tool names** — never mention claude, cursor, copilot, cody, aider, gemini, codex, chatgpt, or gpt-3/4 in commit messages or PR descriptions.
+- **No Co-Authored-By trailers** — omit AI attribution lines.
+- **No `--no-verify`** — let git hooks run normally.
+- **No git config changes** — do not modify `user.name` or `user.email`.
+
+## Doc Commands
+
+| Command       | When to use                                                                  |
+| ------------- | ---------------------------------------------------------------------------- |
+| generate docs | No `docs/ai/` directory exists yet                                           |
+| update docs   | Code changed since the `Last Reviewed` date in L0                            |
+| test docs     | Verify docs give agents the right context (writes `docs/ai/test-results.md`) |
+| fix docs      | Close findings from a docs review or test run                                |
+
+See the [progressive disclosure standard](https://github.com/AgoraIO-Community/ai-devkit/blob/main/docs/standard/progressive-disclosure-standard.md) and [workflows](https://github.com/AgoraIO-Community/ai-devkit/blob/main/docs/workflows/progressive-disclosure-docs.md) for the full specification.
diff --git a/CLAUDE.md b/CLAUDE.md
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+This project uses AGENTS.md instead of a CLAUDE.md file.
+
+Please see @AGENTS.md in this same directory and treat its content as the primary reference for this project.
diff --git a/docs/ai/L0_repo_card.md b/docs/ai/L0_repo_card.md
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+# recipe-client-rn-quickstart — Repo Card
+
+> Bare React Native (TypeScript) voice-agent quickstart: two Agora engine adapters wire `agora-agent-client-toolkit` to `react-native-agora` (RTC) and `agora-react-native-rtm` (RTM), backed by a keyless Python FastAPI token service.
+
+## Identity
+
+| Field          | Value                                                                                 |
+| -------------- | ------------------------------------------------------------------------------------- |
+| Repo           | `AgoraIO-Conversational-AI/recipe-client-rn-quickstart`                               |
+| Type           | `frontend-app` (React Native client + bundled token backend)                          |
+| Language       | React Native 0.86 / TypeScript 5 + Python 3.12 (FastAPI token service)               |
+| Deploy Target  | iOS Simulator / Android emulator or device; server/ as standalone FastAPI service     |
+| Owner          | Agora Conversational AI DevEx                                                         |
+| Last Reviewed  | 2026-06-25                                                                            |
+| Recipe Role    | `base`                                                                                |
+| Recipe Version | `1.0.0`                                                                               |
+| Recipe Status  | `experimental`                                                                        |
+
+## L1 — Summaries
+
+The Audience column helps agents prioritise: **Use** = consuming the recipe's behavior, **Maintain** = modifying internals.
+
+| File                                     | Purpose                                                                               | Audience       |
+| ---------------------------------------- | ------------------------------------------------------------------------------------- | -------------- |
+| [01_setup](L1/01_setup.md)               | Node + npm + iOS/Android toolchain, backend venv/uv, env vars, build/run commands    | Use & Maintain |
+| [02_architecture](L1/02_architecture.md) | App → token service → Agora ConvoAI topology, session lifecycle                      | Maintain       |
+| [03_code_map](L1/03_code_map.md)         | `rn/src/`, `rn/ios/`, `rn/android/`, `server/src/` layout and key file duties        | Maintain       |
+| [04_conventions](L1/04_conventions.md)   | RN/TypeScript idioms, custom hook state, adapter pattern, Python backend conventions | Maintain       |
+| [05_workflows](L1/05_workflows.md)       | Add a screen, change token endpoint, run on iOS/Android, toggle mic, run tests       | Use            |
+| [06_interfaces](L1/06_interfaces.md)     | Token-service API contract, `AgentConfig` shape, toolkit event surface               | Use & Maintain |
+| [07_gotchas](L1/07_gotchas.md)           | Native autolinking, Pods, Android emulator host alias, RTM subscribe order           | Maintain       |
+| [08_security](L1/08_security.md)         | Token handling, App Certificate server-only, no secrets in the RN bundle             | Maintain       |
+
+## Recipe Profile
+
+This repo declares `Recipe Role: base`. See [RECIPE.md](RECIPE.md) for extension points, invariants, and stable contracts before changing reusable surfaces.
diff --git a/docs/ai/L1/01_setup.md b/docs/ai/L1/01_setup.md
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+# 01 · Setup
+
+> Install the React Native toolchain, the Python token backend, configure env vars, and run the app on Android or iOS.
+
+## Prerequisites
+
+| Tool | Minimum | Notes |
+|------|---------|-------|
+| Node.js | 22.11.0 | enforced in `rn/package.json` `engines` field |
+| npm | bundled with Node | used in `rn/`; npm ci in CI |
+| Java (JDK) | 21 (temurin) | Android build (`assembleDebug`) |
+| Android SDK | API 33+ | via `android-actions/setup-android` in CI; locally via Android Studio |
+| Xcode | latest | iOS Simulator; macOS only |
+| CocoaPods | system | iOS native dependency install (`pod install`) |
+| Python | 3.12 recommended (3.10+ supported) | backend venv |
+| uv | any | recommended for venv/install; `pip` also works |
+
+Agora App ID and App Certificate are required (no third-party LLM key — the pipeline is Agora-managed/keyless).
+
+## Install — backend
+
+```bash
+cd server
+uv venv venv && . venv/bin/activate
+uv pip install -r requirements.txt -r requirements-dev.txt
+```
+
+Copy env template and fill credentials:
+
+```bash
+cp .env.example .env.local
+# edit .env.local: set AGORA_APP_ID and AGORA_APP_CERTIFICATE
+```
+
+## Install — React Native app
+
+```bash
+cd rn
+npm install
+
+# iOS only — install native pods
+cd ios && pod install && cd ..
+```
+
+## Configure env — backend
+
+Backend env file: `server/.env.local` (template: `server/.env.example`).
+
+| Variable               | Required | Default                              | Notes                                          |
+| ---------------------- | :------: | ------------------------------------ | ---------------------------------------------- |
+| `AGORA_APP_ID`         |    ✅    | —                                    | Agora Console → Project → App ID               |
+| `AGORA_APP_CERTIFICATE`|    ✅    | —                                    | Agora Console → Project → App Certificate      |
+| `OPENAI_MODEL`         |          | `gpt-4o-mini`                        | OpenAI model used by the Agora-managed vendor  |
+| `OPENAI_API_KEY`       |          | — (keyless by default)               | BYO only — Agora manages the key by default    |
+| `AGENT_GREETING`       |          | `"Hi there! How can I help you today?"` | Override the agent's opening line           |
+
+## Configure — app backend URL
+
+`rn/src/config.ts` exports `AGENT_BACKEND_URL`. Default is `http://10.0.2.2:8000` (Android emulator host alias for `localhost`). For the iOS Simulator change to `http://localhost:8000`.
+
+## Run
+
+```bash
+# Terminal 1 — backend
+cd server && python src/server.py      # binds 0.0.0.0:8000
+
+# Terminal 2 — Android
+cd rn && npx react-native run-android  # starts Metro + installs on emulator/device
+
+# Terminal 2 — iOS
+cd rn && npx react-native run-ios      # requires macOS + Xcode + pod install done
+```
+
+Grant microphone permission when prompted, then tap **Connect**.
+
+## Quick test commands
+
+```bash
+cd rn && npx tsc --noEmit              # TypeScript compile check (no native toolchain needed)
+cd rn && npm test                      # Jest unit tests (mocked fetch — no server needed)
+cd rn/android && ./gradlew assembleDebug   # native Android build smoke
+cd server && pytest -q                 # backend unit tests (no cloud, no creds)
+```
+
+## Related Deep Dives
+
+- [native_dependency_setup.md](L2/native_dependency_setup.md) — CocoaPods, Android autolinking, and Pods troubleshooting.
diff --git a/docs/ai/L1/02_architecture.md b/docs/ai/L1/02_architecture.md
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+++ b/docs/ai/L1/02_architecture.md
@@ -0,0 +1,62 @@
+# 02 · Architecture
+
+> React Native app calls the token backend directly over HTTP, then uses two Agora engine adapters to join both RTC (audio) and RTM (transcript) channels via `agora-agent-client-toolkit`.
+
+## Topology
+
+```
+React Native App (rn/)
+  │  HTTP fetch
+  ▼
+Token Backend (server/, :8000)
+  │  GET /get_config  →  returns app_id, token, uid, channelName, agentUid
+  │  POST /startAgent →  starts the Agora ConvoAI agent in the channel
+  │  POST /stopAgent  →  stops the agent
+  ▼
+Agora ConvoAI Cloud
+  │  user audio (RTC)   →  DeepgramSTT → OpenAI (Agora-managed) → MiniMaxTTS
+  │  agent audio (RTC)  →  back to user's channel
+  │  transcript (RTM)   →  MessageEvent delivered to RtmEngineAdapter
+  ▼
+agora-agent-client-toolkit (AgoraVoiceAI)
+  │  TRANSCRIPT_UPDATED  →  CallState.useCallStore → CallScreen FlatList
+  │  AGENT_STATE_CHANGED →  CallState.agentState badge
+```
+
+## Key components
+
+| Component | Location | Role |
+|-----------|----------|------|
+| `BackendApi` | `rn/src/BackendApi.ts` | HTTP fetch wrapper for the three token-service endpoints |
+| `AgoraSession` | `rn/src/agora/AgoraSession.ts` | Orchestrates `RtcEngineAdapter` + `RtmEngineAdapter` + `AgoraVoiceAI`; owns session lifecycle |
+| `RtcEngineAdapter` | `rn/src/agora/RtcEngineAdapter.ts` | Adapts `react-native-agora` `IRtcEngine` to the toolkit's `RTCEngine` interface |
+| `RtmEngineAdapter` | `rn/src/agora/RtmEngineAdapter.ts` | Adapts `agora-react-native-rtm` `RTMClient` to the toolkit's `RTMEngine` interface; translates native `MessageEvent` shape |
+| `useCallStore` | `rn/src/CallState.ts` | React custom hook owning `phase`, `turns`, `agentState`, `micMuted`; drives `AgoraSession` |
+| `LandingScreen` | `rn/src/ui/LandingScreen.tsx` | Pre-call UI; requests Android microphone permission |
+| `CallScreen` | `rn/src/ui/CallScreen.tsx` | In-call UI: transcript `FlatList` + mute/end controls |
+| `server/src/agent.py` | `server/` | Agora-managed cascading pipeline (Deepgram STT → OpenAI → MiniMaxTTS) via `agora-agents>=2.3.0` |
+
+## Session lifecycle
+
+1. `useCallStore.connect()` → `BackendApi.getConfig()` → receives `{appId, token, uid, channelName, agentUid}`.
+2. `AgoraSession.start(config)` → `RtmEngineAdapter.login(token)` → `RtcEngineAdapter.join(...)` (mic published, role Broadcaster).
+3. `AgoraVoiceAI.init({ rtcEngine, rtmConfig, renderMode: TEXT })`.
+4. `ai.subscribeMessage(channelName)` binds toolkit listeners; `rtm.subscribeChannel(channelName)` activates RTM 2.x delivery — **both required, in this order**.
+5. `BackendApi.startAgent(channelName, agentUid, uid)` → Agora ConvoAI cloud starts the agent.
+6. Agent greets user; RTM `MessageEvent` → `RtmEngineAdapter` → `AgoraVoiceAI` → `TRANSCRIPT_UPDATED` → `CallScreen` re-renders.
+7. `end()` → `stopAgent(agentId)` → `AgoraSession.stop()` (RTM unsubscribe + logout, RTC leave).
+
+## Pipeline (server side)
+
+`DeepgramSTT(nova-3, en)` → `OpenAI` (Agora-managed, keyless) → `MiniMaxTTS` — no `llm/` service; single-process cascade. Data channel is `"rtm"` with `enable_rtm: True`; transcript/state/metrics ride RTM.
+
+## Tech decisions
+
+- **Engine adapters** — `agora-agent-client-toolkit` is engine-agnostic; adapters translate native RN SDK event shapes to the toolkit's `RTCEngine`/`RTMEngine` interfaces.
+- **RTM 2.x explicit subscribe** — the TS toolkit's `subscribeMessage` only binds listeners; `client.subscribe(channel)` must be called separately (unlike the native iOS/Android toolkits which subscribe internally).
+- **Keyless pipeline** — no third-party LLM key required; Agora manages the OpenAI vendor. `OPENAI_API_KEY` is optional BYO.
+- **Android emulator alias** — `10.0.2.2` is the emulator's route to the host `localhost:8000`.
+
+## Related Deep Dives
+
+- [rtm_adapter_and_session.md](L2/rtm_adapter_and_session.md) — RTM event translation, presence-state synthesis, subscribe ordering.
diff --git a/docs/ai/L1/03_code_map.md b/docs/ai/L1/03_code_map.md
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+# 03 · Code Map
+
+> Directory layout for `rn/` (React Native app) and `server/` (Python token service).
+
+## Top-level layout
+
+```
+recipe-client-rn-quickstart/
+├── rn/                     # React Native app (TypeScript)
+├── server/                 # Python FastAPI token/agent backend
+├── Dockerfile              # builds the server/ backend image
+└── .github/workflows/
+    ├── ci.yml              # server pytest + RN tsc/jest/assembleDebug
+    └── docker.yml          # build + smoke-test the backend image
+```
+
+## `rn/` — React Native app
+
+```
+rn/
+├── App.tsx                         # root component; renders LandingScreen or CallScreen
+├── index.js                        # RN entry point (registers AppRegistry)
+├── src/
+│   ├── config.ts                   # AGENT_BACKEND_URL + AUTO_CONNECT flag
+│   ├── BackendApi.ts               # HTTP fetch wrapper (getConfig, startAgent, stopAgent)
+│   ├── CallState.ts                # useCallStore custom hook — phase, turns, agentState, micMuted
+│   ├── agora/
+│   │   ├── AgoraSession.ts         # session orchestrator (RTM login → RTC join → toolkit init → subscribe)
+│   │   ├── RtcEngineAdapter.ts     # react-native-agora → toolkit RTCEngine adapter
+│   │   └── RtmEngineAdapter.ts     # agora-react-native-rtm → toolkit RTMEngine adapter + event translation
+│   └── ui/
+│       ├── LandingScreen.tsx       # pre-call screen; requests Android RECORD_AUDIO permission
+│       └── CallScreen.tsx          # in-call screen: agent state badge, transcript FlatList, mute/end
+├── __tests__/
+│   └── BackendApi.test.ts          # Jest unit test (mocked fetch) for envelope decoding
+├── android/
+│   └── app/src/main/
+│       └── AndroidManifest.xml     # INTERNET + RECORD_AUDIO permissions
+├── ios/
+│   ├── Podfile                     # CocoaPods: use_native_modules! + react_native_post_install
+│   └── RnQuickstart.xcodeproj/
+├── package.json                    # deps: react-native-agora, agora-react-native-rtm, agora-agent-client-toolkit
+├── tsconfig.json                   # extends @react-native/typescript-config
+├── metro.config.js                 # default Metro config
+└── babel.config.js
+```
+
+## `server/` — Python FastAPI token service
+
+```
+server/
+├── src/
+│   ├── server.py       # FastAPI app; GET /get_config, POST /startAgent, POST /stopAgent
+│   └── agent.py        # Agent class; cascading Deepgram→OpenAI→MiniMax pipeline; sessions dict
+├── tests/
+│   ├── conftest.py             # fake env fixture (AGORA_APP_ID, AGORA_APP_CERTIFICATE)
+│   ├── test_config.py          # basic Agent construction smoke
+│   └── test_agent_construction.py  # AgoraAgent construction + FakeSession integration
+├── scripts/
+│   └── run_fake_server.py      # local dev helper (not CI gate)
+├── requirements.txt            # fastapi, uvicorn, agora-agents>=2.3.0, python-dotenv, socksio
+├── requirements-dev.txt        # pytest
+└── .env.example                # template: AGORA_APP_ID, AGORA_APP_CERTIFICATE, optional vars
+```
+
+## Key file responsibilities
+
+| File | What it owns |
+|------|-------------|
+| `rn/src/agora/RtmEngineAdapter.ts` | Native `MessageEvent` → toolkit `{publisher, messageType, message}` translation; presence `stateItems[]` → `stateChanged` synthesis |
+| `rn/src/agora/AgoraSession.ts` | RTM-before-RTC ordering; `subscribeMessage` + `subscribeChannel` ordering pre-`startAgent` |
+| `rn/src/CallState.ts` | Turn upsert by `(turnId, type)` composite key; all React state |
+| `server/src/agent.py` | Agora-managed STT/LLM/TTS cascade; `_sessions` dict for stop-by-id; `data_channel="rtm"` |
+| `server/src/server.py` | Token generation (`generate_convo_ai_token`), route dispatch, error mapping |
+
+## Related Deep Dives
+
+- [rtm_adapter_and_session.md](L2/rtm_adapter_and_session.md) — adapter internals in detail.
+- [native_dependency_setup.md](L2/native_dependency_setup.md) — Pods and Android autolinking.
diff --git a/docs/ai/L1/04_conventions.md b/docs/ai/L1/04_conventions.md
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+++ b/docs/ai/L1/04_conventions.md
@@ -0,0 +1,42 @@
+# 04 · Conventions
+
+> TypeScript/React Native idioms, the adapter pattern, React state conventions, and Python backend patterns.
+
+## React Native / TypeScript
+
+| Convention | Detail |
+|------------|--------|
+| Single entry custom hook | `useCallStore()` in `CallState.ts` owns all session state and returns a `CallStore` type; screens receive only what they display |
+| Phase enum | `Phase = 'idle' \| 'connecting' \| 'inCall' \| 'error'` — `App.tsx` switches on `phase` to mount `LandingScreen` or `CallScreen` |
+| Transcript composite key | Turns are upserted by `` `${turnId}-${type}` `` (Map keyed by this string); `type = 'user' \| 'agent'` discriminated from `item.metadata.object` |
+| `useRef` for objects | `apiRef`, `sessionRef`, `agentIdRef` use `useRef` — stable across re-renders, not reactive |
+| Android permission before connect | `LandingScreen` calls `PermissionsAndroid.request(RECORD_AUDIO)` on Connect press; iOS is handled by native Info.plist |
+| `DIAG` log prefix | Diagnostic `console.log` lines use `'DIAG'` prefix throughout; safe to remove in production |
+| `AUTO_CONNECT` flag | `src/config.ts` — `false` by default; set `true` for CI logcat gating without manual tap |
+
+## Adapter pattern
+
+Each native Agora SDK has a different event / method shape. The adapters (`RtcEngineAdapter`, `RtmEngineAdapter`) wrap the native SDK and implement the toolkit's `RTCEngine` / `RTMEngine` interfaces. This keeps `AgoraSession` and the toolkit free from native SDK specifics.
+
+| Interface | Adapter | Native SDK |
+|-----------|---------|------------|
+| `RTCEngine` | `RtcEngineAdapter` | `react-native-agora` (`IRtcEngine`) |
+| `RTMEngine` | `RtmEngineAdapter` | `agora-react-native-rtm` (`RTMClient`) |
+
+- **Bridged listener map** — `RtmEngineAdapter` stores `toolkitListener → nativeListener` in `bridged` so `removeEventListener` can deregister the exact native closure.
+- **No toolkit join** — the toolkit does not join channels; `AgoraSession` calls `rtc.join(...)` directly.
+
+## Python backend
+
+| Convention | Detail |
+|------------|--------|
+| `{ code, msg, data }` envelope | All success responses; `data` present only when there is a payload |
+| Error mapping | `ValueError→400`, `RuntimeError→500`, else 500 via `_to_http_error` |
+| `Agent()` raises on missing creds | `__init__` raises `ValueError` if `AGORA_APP_ID`/`AGORA_APP_CERTIFICATE` absent; server catches and sets `agent = None` |
+| `_sessions` in-memory dict | Maps `agent_id → session`; `stop()` falls back to `client.stop_agent(agent_id)` if the session is missing (restart resilience) |
+| camelCase request fields | `StartAgentRequest` uses `channelName`, `rtcUid`, `userUid` to match the RN client's JSON |
+| `data_channel: "rtm"` | Always set; required for transcript delivery to the toolkit |
+
+## Related Deep Dives
+
+- [rtm_adapter_and_session.md](L2/rtm_adapter_and_session.md) — bridged listener map and event translation in depth.
diff --git a/docs/ai/L1/05_workflows.md b/docs/ai/L1/05_workflows.md
new file mode 100644
index 0000000..580b61e
--- /dev/null
+++ b/docs/ai/L1/05_workflows.md
@@ -0,0 +1,98 @@
+# 05 · Workflows
+
+> Common modification workflows: add a screen, change the token endpoint, run on each platform, toggle mic, run tests.
+
+## Add a new screen
+
+1. Create `rn/src/ui/YourScreen.tsx` as a functional component, props-only (no local state).
+2. Add a new `Phase` value to `Phase` in `CallState.ts` if the screen corresponds to a new call state.
+3. Extend `useCallStore()` with any actions the screen needs.
+4. In `App.tsx` `AppContent`, add a branch in the `inCall`/else switch to mount your screen.
+5. Run `npx tsc --noEmit` to verify.
+
+## Change the token endpoint URL
+
+Edit `rn/src/config.ts`:
+```ts
+export const AGENT_BACKEND_URL = 'http://<your-host>:8000';
+```
+- Android emulator → host machine: `http://10.0.2.2:8000`
+- iOS Simulator → host machine: `http://localhost:8000`
+- Physical device → use the host machine's LAN IP
+
+## Run on Android
+
+```bash
+# Terminal 1
+cd server && python src/server.py
+
+# Terminal 2 — emulator or USB device
+cd rn && npx react-native run-android
+```
+
+Ensure an emulator is running (`emulator -list-avds`) or a USB device is connected (`adb devices`).
+
+## Run on iOS (macOS only)
+
+```bash
+# Install pods (first time or after npm install)
+cd rn/ios && pod install
+
+# Terminal 1
+cd server && python src/server.py
+
+# Terminal 2
+cd rn && npx react-native run-ios
+```
+
+Change `AGENT_BACKEND_URL` to `http://localhost:8000` in `rn/src/config.ts` for the Simulator.
+
+## Toggle microphone
+
+`CallScreen` shows a **Mute / Unmute** button calling `onToggleMic`. `useCallStore.toggleMic()` calls `sessionRef.current.setMicMuted(next)` → `RtcEngineAdapter.setMicMuted(muted)` → `engine.muteLocalAudioStream(muted)`. The `micMuted` state drives the button label.
+
+## Run TypeScript check (no toolchain needed)
+
+```bash
+cd rn && npx tsc --noEmit
+```
+
+Pins Agora SDK + toolkit signatures; runs in CI without Android/iOS toolchain.
+
+## Run Jest unit tests
+
+```bash
+cd rn && npm test
+```
+
+Tests in `__tests__/BackendApi.test.ts` mock `fetch`; no server or device needed.
+
+## Run backend tests (no cloud, no creds)
+
+```bash
+cd server && pytest -q
+```
+
+`conftest.py` provides `fake_env` fixture; `test_agent_construction.py` stubs the SDK session.
+
+## Run Android native build (CI gate)
+
+```bash
+cd rn/android && ./gradlew assembleDebug
+```
+
+Requires Java 21 and Android SDK. Validates that native autolinking resolves (`react-native-agora`, `agora-react-native-rtm`).
+
+## Change agent greeting or pipeline
+
+Edit `server/.env.local` (or env vars):
+- `AGENT_GREETING` — override the opening line
+- `OPENAI_MODEL` — change the LLM model (default `gpt-4o-mini`)
+- `OPENAI_API_KEY` — provide a BYO key (optional; Agora-managed by default)
+
+To change STT/LLM/TTS vendors, edit `server/src/agent.py` in the `Agent.start()` method where `stt`, `llm`, `tts` are constructed.
+
+## Related Deep Dives
+
+- [native_dependency_setup.md](L2/native_dependency_setup.md) — Pods and autolinking troubleshooting.
+- [rtm_adapter_and_session.md](L2/rtm_adapter_and_session.md) — session start/stop ordering.
diff --git a/docs/ai/L1/06_interfaces.md b/docs/ai/L1/06_interfaces.md
new file mode 100644
index 0000000..1ce6ef9
--- /dev/null
+++ b/docs/ai/L1/06_interfaces.md
@@ -0,0 +1,88 @@
+# 06 · Interfaces
+
+> Token-service API contract, `AgentConfig` shape, `BackendApi` client, Agora toolkit event surface, and env vars.
+
+## Token-service API (server/, port 8000)
+
+The RN app calls these directly (no rewrite proxy — this is a native app, not a browser).
+
+### `GET /get_config`
+
+- Query (optional): `channel?: string`, `uid?: int` (≤ 0 or missing → server generates one).
+- Returns `data`: `{ app_id, token, uid (string), channel_name, agent_uid (string) }`.
+- Token is a Token007 RTC+RTM token, expiry 3600 s, for a concrete non-zero UID.
+
+### `POST /startAgent`
+
+- Body: `{ channelName: string, rtcUid: int, userUid: int, parameters?: object }`.
+  - `parameters.output_audio_codec?: string` is the only honored parameter field.
+- Returns `data`: `{ agent_id, channel_name, status: "started" }`.
+- Returns 500 if `AGORA_APP_ID`/`AGORA_APP_CERTIFICATE` are absent (`agent` is `None`).
+
+### `POST /stopAgent`
+
+- Body: `{ agentId: string }`.
+- Returns `{ code: 0, msg: "success" }` (no `data`).
+
+## Response envelope
+
+```json
+{ "code": 0, "msg": "success", "data": { ... } }
+```
+
+`data` is omitted when the route has no payload. Non-zero `code` = error.
+
+## `AgentConfig` (RN app)
+
+Returned by `BackendApi.getConfig()`:
+
+```ts
+interface AgentConfig {
+  appId: string;
+  token: string;
+  uid: string;        // user UID as string
+  channelName: string;
+  agentUid: string;   // agent UID as string
+}
+```
+
+## `BackendApi` client (`rn/src/BackendApi.ts`)
+
+| Method | Call |
+|--------|------|
+| `getConfig()` | `GET /get_config?uid=0` → `AgentConfig` |
+| `startAgent(channelName, rtcUid, userUid)` | `POST /startAgent` → `agent_id: string` |
+| `stopAgent(agentId)` | `POST /stopAgent` → `void` |
+
+## Toolkit events (`agora-agent-client-toolkit`)
+
+`AgoraVoiceAI` emits these events via `AgoraVoiceAIEvents`:
+
+| Event | Payload | Consumed by |
+|-------|---------|-------------|
+| `TRANSCRIPT_UPDATED` | `TranscriptHelperItem[]` | `AgoraSession` → `useCallStore.applyTranscript` |
+| `AGENT_STATE_CHANGED` | `(agentUserId: string, event: StateChangeEvent)` | `useCallStore` → `agentState` |
+| `AGENT_ERROR` | `(agentUserId: string, error: Error)` | `useCallStore` → `error` state |
+
+`AgoraVoiceAI.init()` parameters:
+
+| Field | Value |
+|-------|-------|
+| `rtcEngine` | `RtcEngineAdapter` instance |
+| `rtmConfig.rtmEngine` | `RtmEngineAdapter` instance |
+| `renderMode` | `TranscriptHelperMode.TEXT` |
+
+## Environment variables — backend
+
+| Variable               | Required | Default       | Notes                                        |
+| ---------------------- | :------: | ------------- | -------------------------------------------- |
+| `AGORA_APP_ID`         |    ✅    | —             | Agora project App ID                         |
+| `AGORA_APP_CERTIFICATE`|    ✅    | —             | Agora project App Certificate                |
+| `OPENAI_MODEL`         |          | `gpt-4o-mini` | OpenAI model for Agora-managed vendor        |
+| `OPENAI_API_KEY`       |          | — (keyless)   | Optional BYO; Agora manages key by default   |
+| `AGENT_GREETING`       |          | built-in      | Override opening utterance                   |
+| `PORT`                 |          | `8000`        | Server port (env only; do not add to .env.example) |
+
+## Related Deep Dives
+
+- [rtm_adapter_and_session.md](L2/rtm_adapter_and_session.md) — `RTMEngine` contract in depth.
diff --git a/docs/ai/L1/07_gotchas.md b/docs/ai/L1/07_gotchas.md
new file mode 100644
index 0000000..bdd4c30
--- /dev/null
+++ b/docs/ai/L1/07_gotchas.md
@@ -0,0 +1,61 @@
+# 07 · Gotchas
+
+> Non-obvious platform pitfalls: native linking, Pods, Android emulator networking, RTM subscribe ordering, and backend quirks.
+
+## RTM 2.x requires an explicit channel subscribe
+
+The TypeScript toolkit's `subscribeMessage(channelName)` only registers event listeners — it does **not** subscribe the RTM channel. Unlike the native iOS/Android toolkits (which subscribe internally), the TS version on React Native requires:
+
+```ts
+ai.subscribeMessage(channelName);          // bind listeners first
+await rtm.subscribeChannel(channelName);   // then activate delivery
+```
+
+Reversing the order or omitting `subscribeChannel` silently drops all transcript messages.
+
+## Subscribe BEFORE `/startAgent`
+
+`AgoraSession.start()` calls `subscribeMessage` + `subscribeChannel` before returning, so the caller must fire `startAgent` only after `session.start()` resolves. The agent's greeting arrives immediately on join; missing the subscribe means missing the first transcript turn.
+
+## Android emulator host alias
+
+The backend binds `0.0.0.0:8000` on the host machine. From inside an Android emulator, `localhost` and `127.0.0.1` refer to the emulator itself — not the host. Use `10.0.2.2` (the emulator's route to the host loopback). This is hardcoded in `rn/src/config.ts`. For an iOS Simulator, `localhost` works because the Simulator shares the host network stack.
+
+## iOS CocoaPods must be run after `npm install`
+
+`react-native-agora` and `agora-react-native-rtm` ship native code installed via CocoaPods. After any `npm install` that changes these packages, run:
+
+```bash
+cd rn/ios && pod install
+```
+
+Failing to do so results in missing native modules at runtime (`RCTBridge: Module 'AgoraRtcNg' could not be found`). There is no `pod install` equivalent for Android — autolinking handles it at Gradle build time.
+
+## Android autolinking requires a fresh Gradle build
+
+Autolinking for `react-native-agora` and `agora-react-native-rtm` is applied at `./gradlew assembleDebug` time. If you install a new version of either package:
+
+```bash
+cd rn/android && ./gradlew clean && ./gradlew assembleDebug
+```
+
+## `RECORD_AUDIO` permission on Android
+
+The `LandingScreen` calls `PermissionsAndroid.request(RECORD_AUDIO)` at connect time. If the user denies it, `RtcEngineAdapter.join()` still calls `engine.enableAudio()` and `joinChannel()`, but no audio will be captured. Guard on the return value of `ensureMicPermission()` (the screen already does this).
+
+## Presence `stateItems` shape difference
+
+The agent publishes its state (e.g. `state: "speaking"`) as RTM presence state. The RN RTM SDK delivers this as `PresenceEvent.stateItems: { key, value }[]`, not as a flat object. `RtmEngineAdapter.makeNativeListener('presence')` folds `stateItems` into a map and synthesizes `stateChanged: { state, turn_id }` — the shape the toolkit's `_handleRtmPresence` expects. Do not bypass this translation.
+
+## `agent` is `None` after server startup if env vars are missing
+
+`server.py` catches `ValueError` from `Agent()` and sets `agent = None`. All routes guard `if agent is None → 500`. The server still starts but every API call returns 500. Check `AGORA_APP_ID` / `AGORA_APP_CERTIFICATE` in `.env.local`.
+
+## Cleartext traffic on Android
+
+`AndroidManifest.xml` sets `android:usesCleartextTraffic="${usesCleartextTraffic}"`. In debug builds (`build.gradle` defaultConfig) this is `true`, allowing HTTP to `10.0.2.2:8000`. In release builds use HTTPS or configure a Network Security Config.
+
+## Related Deep Dives
+
+- [native_dependency_setup.md](L2/native_dependency_setup.md) — detailed CocoaPods and autolinking resolution.
+- [rtm_adapter_and_session.md](L2/rtm_adapter_and_session.md) — subscribe ordering and event translation.
diff --git a/docs/ai/L1/08_security.md b/docs/ai/L1/08_security.md
new file mode 100644
index 0000000..6675af5
--- /dev/null
+++ b/docs/ai/L1/08_security.md
@@ -0,0 +1,45 @@
+# 08 · Security
+
+> Token handling, App Certificate server-side enforcement, no secrets in the RN bundle, microphone permissions, and CORS.
+
+## App Certificate stays in the backend
+
+`AGORA_APP_CERTIFICATE` is used only in `server/src/server.py` to call `generate_convo_ai_token()`. It is never passed to the React Native app. The app receives only the derived, short-lived Token007 (expiry 3600 s). Never embed the App Certificate or App ID + Certificate together in the RN bundle.
+
+## Token007 is the only credential the app holds
+
+`BackendApi.getConfig()` returns `token` (a Token007 string) plus `appId`. The `appId` is considered public (needed by the SDK to initialize). The token grants access to a specific channel for a specific UID with a fixed expiry. It is:
+- stored only in `AgoraSession` memory (not persisted to AsyncStorage or disk)
+- discarded on `AgoraSession.stop()`
+
+## No secrets in the RN bundle
+
+| What | Location | Why it's safe |
+|------|----------|---------------|
+| `AGORA_APP_CERTIFICATE` | `server/.env.local` | backend-only; never sent to app |
+| `OPENAI_API_KEY` (BYO) | `server/.env.local` | backend-only; never sent to app |
+| Token007 | in-memory `AgoraSession` | short-lived, single-channel, single-UID |
+| `AGENT_BACKEND_URL` | `rn/src/config.ts` | URL of the backend; not a credential |
+
+Do not add certificate, LLM keys, or any persistent secrets to `rn/src/config.ts`, `app.json`, or native Info.plist/AndroidManifest.
+
+## `OPENAI_API_KEY` is optional (keyless default)
+
+The pipeline uses the Agora-managed OpenAI vendor by default — no user-supplied LLM key is required. If `OPENAI_API_KEY` is set in `server/.env.local`, it is passed to the `OpenAI` vendor as a BYO key. It is **never** transmitted to the RN app.
+
+## Microphone permission
+
+- **Android**: `AndroidManifest.xml` declares `RECORD_AUDIO`; `LandingScreen` calls `PermissionsAndroid.request(RECORD_AUDIO)` at runtime before `connect()`.
+- **iOS**: `Info.plist` must contain `NSMicrophoneUsageDescription` (the bare RN project scaffold includes this). The system prompts on first `joinChannel`.
+
+## CORS
+
+`server.py` adds `CORSMiddleware` with `allow_origins=["*"]`. Because this is a native app (not a browser), CORS does not gate access to the token service. For production deployments, restrict `allow_origins` to known origins if the backend is also exposed to web clients.
+
+## Cleartext HTTP in debug
+
+The Android app reaches `10.0.2.2:8000` over plain HTTP (`usesCleartextTraffic=true` in debug). For production builds, host the backend behind HTTPS and remove the cleartext allowance.
+
+## Related Deep Dives
+
+- None. Token issuance details are in [06_interfaces](06_interfaces.md).
diff --git a/docs/ai/L1/L2/_index.md b/docs/ai/L1/L2/_index.md
new file mode 100644
index 0000000..f08c489
--- /dev/null
+++ b/docs/ai/L1/L2/_index.md
@@ -0,0 +1,6 @@
+# Deep Dives Index
+
+| Document | Summary | Load When |
+|----------|---------|-----------|
+| [rtm_adapter_and_session.md](rtm_adapter_and_session.md) | `RtmEngineAdapter` event translation, bridged listener map, presence synthesis, session subscribe ordering | Touching transcript delivery, RTM subscribe order, `RtmEngineAdapter`, or presence-state handling |
+| [native_dependency_setup.md](native_dependency_setup.md) | CocoaPods install flow, Android autolinking, common native linking errors and fixes | Setting up iOS, troubleshooting missing native modules, upgrading `react-native-agora` or `agora-react-native-rtm` |
diff --git a/docs/ai/L1/L2/native_dependency_setup.md b/docs/ai/L1/L2/native_dependency_setup.md
new file mode 100644
index 0000000..730bce3
--- /dev/null
+++ b/docs/ai/L1/L2/native_dependency_setup.md
@@ -0,0 +1,87 @@
+# Native Dependency Setup — Deep Dive
+
+**When to Read This:** You are setting up the iOS build for the first time, troubleshooting missing native modules at runtime, upgrading `react-native-agora` or `agora-react-native-rtm`, or diagnosing a failed `assembleDebug`.
+
+## How native linking works in this project
+
+React Native 0.86 uses **autolinking** — no manual `MainApplication.java` registration required. Both `react-native-agora` and `agora-react-native-rtm` ship native modules that are automatically linked.
+
+| Platform | Mechanism | When it runs |
+|----------|-----------|-------------|
+| iOS | CocoaPods (`use_native_modules!` in Podfile) | `pod install` |
+| Android | Gradle autolinking (`react-native.gradle`) | `./gradlew assembleDebug` |
+
+## iOS — CocoaPods
+
+### Install pods
+
+```bash
+cd rn/ios
+pod install
+```
+
+Must be run:
+- After initial `npm install`
+- After upgrading `react-native-agora` or `agora-react-native-rtm`
+- After any `npm install` that changes native packages
+
+### What the Podfile does
+
+`rn/ios/Podfile` calls `use_native_modules!` (resolves native packages from `node_modules`) and `use_react_native!` (installs the RN core pods). `react_native_post_install` patches minimum deployment targets.
+
+The Agora RTC and RTM SDKs include prebuilt XCFrameworks — CocoaPods downloads them from the Agora CDN. This can be slow on first install (~300 MB).
+
+### Common iOS errors
+
+| Error | Cause | Fix |
+|-------|-------|-----|
+| `Module 'AgoraRtcNg' could not be found` | `pod install` not run after `npm install` | `cd ios && pod install` |
+| `Unable to find a specification for 'AgoraRtcEngine_iOS'` | CocoaPods cache stale | `pod repo update && pod install` |
+| Build fails on arm64 (Apple Silicon) | Rosetta or arch mismatch | `arch -x86_64 pod install` or ensure CocoaPods is native arm64 |
+| `min_ios_version_supported` conflict | Pods require a higher iOS deployment target than RN default | Update target in Podfile (`platform :ios, '14.0'`) if needed |
+
+## Android — Gradle autolinking
+
+### How autolinking resolves native packages
+
+At build time, Gradle's `react-native.gradle` plugin scans `node_modules` for packages with `android` native code and generates `PackageList.java`. Both `react-native-agora` and `agora-react-native-rtm` register their native modules here automatically.
+
+### Required permissions
+
+`rn/android/app/src/main/AndroidManifest.xml` declares:
+- `INTERNET` — required for Agora SDK network connectivity
+- `RECORD_AUDIO` — declared statically; requested at runtime via `PermissionsAndroid`
+
+### Cleartext traffic
+
+`android:usesCleartextTraffic="${usesCleartextTraffic}"` — in debug builds this is `true` (via `build.gradle` `manifestPlaceholders`), allowing HTTP to `10.0.2.2:8000`.
+
+### Common Android errors
+
+| Error | Cause | Fix |
+|-------|-------|-----|
+| `Could not find com.agora.example:...` | Agora Maven repo not in `build.gradle` | Check that `react-native-agora`'s `build.gradle` adds the Agora Maven repo; usually autolinking handles this |
+| `Duplicate class` on `agora-react-native-rtm` + `react-native-agora` | Shared native transitive deps | Check for `exclude group:` rules in `rn/android/app/build.gradle` |
+| `RECORD_AUDIO: Permission denied` at runtime | User denied permission | App handles in `LandingScreen.ensureMicPermission()` — check return value |
+| `./gradlew: Permission denied` | gradle wrapper not executable | `chmod +x rn/android/gradlew` |
+
+### Clean build
+
+If autolinking seems stale after a package upgrade:
+
+```bash
+cd rn/android && ./gradlew clean && ./gradlew assembleDebug
+```
+
+## Java version requirement
+
+CI uses JDK 21 (Temurin). Gradle 8.x bundled with RN 0.86 requires JDK 17+. JDK 21 is the verified combination. Check with:
+
+```bash
+java -version   # should report 21.x
+```
+
+## Related L1 Files
+
+- [01_setup.md](../01_setup.md) — prerequisite list and install commands.
+- [07_gotchas.md](../07_gotchas.md) — Pods gotcha and cleartext traffic note.
diff --git a/docs/ai/L1/L2/rtm_adapter_and_session.md b/docs/ai/L1/L2/rtm_adapter_and_session.md
new file mode 100644
index 0000000..5f92854
--- /dev/null
+++ b/docs/ai/L1/L2/rtm_adapter_and_session.md
@@ -0,0 +1,109 @@
+# RTM Adapter and Session Lifecycle — Deep Dive
+
+**When to Read This:** You are modifying transcript delivery, RTM subscribe ordering, the `RtmEngineAdapter` event translation, presence-state synthesis, or the `AgoraSession` start/stop lifecycle. This document explains *why* the adapter is shaped the way it is and where the non-obvious constraints come from.
+
+## Why a custom `RtmEngineAdapter` is necessary
+
+The `agora-agent-client-toolkit` defines a `RTMEngine` interface: `addEventListener`, `removeEventListener`, `publish`. The `agora-react-native-rtm` SDK provides an `RTMClient` with a different event shape. The adapter bridges them.
+
+### `MessageEvent` translation
+
+The toolkit's `_handleRtmMessage` reads each `'message'` event as:
+
+```ts
+{ publisher: string, messageType: string, message: string }
+```
+
+The RN SDK's `MessageEvent` has:
+
+```ts
+{
+  publisher: string,
+  message: string | Uint8Array,
+  messageType: number,   // binary enum (0=binary, 1=string) — NOT a string discriminator
+  customType: string,    // the string field the toolkit wants as `messageType`
+}
+```
+
+`makeNativeListener('message')` translates this to the toolkit shape:
+
+```ts
+return (event: MessageEvent) => {
+  listener({
+    publisher: event.publisher,
+    messageType: event.customType,   // carry customType, not the numeric enum
+    message: event.message,
+  });
+};
+```
+
+### Presence `stateItems` synthesis
+
+The Agora ConvoAI agent publishes its state as RTM presence state changes. The RN SDK delivers `PresenceEvent.stateItems: { key: string, value: string }[]`. The toolkit's `_handleRtmPresence` expects:
+
+```ts
+{ publisher, timestamp, stateChanged: { state: string, turn_id: string } }
+```
+
+`makeNativeListener('presence')` folds `stateItems` into a map and synthesizes `stateChanged`:
+
+```ts
+const states: Record<string, string> = {};
+for (const item of event.stateItems ?? []) {
+  if (item.key != null) states[item.key] = item.value ?? '';
+}
+const stateChanged = typeof states.state === 'string'
+  ? { state: states.state, turn_id: states.turn_id ?? '0' }
+  : undefined;
+```
+
+This matches the native iOS/Android toolkit behavior (which reads `states["state"]` / `states["turn_id"]`).
+
+### Bridged listener map
+
+To support `removeEventListener`, the adapter stores a `Map<string, Map<toolkitListener, nativeListener>>`. When the toolkit calls `removeEventListener(event, listener)`, the adapter looks up the native closure and deregisters exactly it. Without this, `removeEventListener` would do nothing (closures are unique per call).
+
+```ts
+private bridged = new Map<string, Map<RtmListener, RtmListener>>();
+```
+
+## Subscribe ordering in `AgoraSession.start()`
+
+Order matters. Violating it silently drops transcript or greeting messages.
+
+```
+1. rtm.login(token)                       // authenticate with RTM
+2. rtc.join(appId, token, channel, uid)   // join audio channel (mic published)
+3. AgoraVoiceAI.init({ rtcEngine, rtmConfig, renderMode })
+4. ai.on(TRANSCRIPT_UPDATED, ...)         // bind app callbacks
+5. ai.on(AGENT_STATE_CHANGED, ...)
+6. ai.subscribeMessage(channelName)       // bind toolkit's internal RTM listeners
+7. rtm.subscribeChannel(channelName)      // activate RTM 2.x channel delivery  ← DO NOT skip
+8. [caller] BackendApi.startAgent(...)    // start the agent AFTER subscribe
+```
+
+Step 6 alone is **not enough** for RTM 2.x. Unlike the native iOS/Android SDKs (where subscribe is internal), the TS toolkit only registers listeners in step 6. The channel must be subscribed explicitly (step 7) before any messages arrive.
+
+## `AgoraSession.stop()` teardown
+
+```
+1. ai.unsubscribe()                  // remove toolkit's RTM listeners
+2. rtm.unsubscribeChannel(channel)   // deactivate RTM channel delivery
+3. rtc.leave()                       // leave RTC channel
+4. rtm.logout()                      // logout RTM
+5. ai.destroy()                      // release toolkit resources
+6. rtc.destroy()                     // release RTC engine
+7. rtm.release()                     // release RTM client
+```
+
+Errors are caught in a try/finally; all refs are nulled in the finally block so a failed stop doesn't leave a zombie session.
+
+## Backend `_sessions` and stop resilience
+
+`server/src/agent.py` stores `agent_id → session` in `_sessions`. `stop()` pops the session and calls `session.stop()`. If the session is missing (backend restarted mid-call), it falls back to `client.stop_agent(agent_id)`, which is the Agora REST stop. This prevents `stopAgent` from returning an error when called after a server restart.
+
+## Related L1 Files
+
+- [02_architecture.md](../02_architecture.md) — topology and session lifecycle overview.
+- [04_conventions.md](../04_conventions.md) — bridged listener map and adapter pattern.
+- [07_gotchas.md](../07_gotchas.md) — subscribe ordering gotchas.
diff --git a/docs/ai/RECIPE.md b/docs/ai/RECIPE.md
new file mode 100644
index 0000000..7eb77d9
--- /dev/null
+++ b/docs/ai/RECIPE.md
@@ -0,0 +1,95 @@
+---
+recipe_version: 1.0.0
+recipe_status: experimental
+extension_points:
+  - id: app.screens
+    name: React Native screens and navigation
+  - id: app.backend-url
+    name: Token service URL in rn/src/config.ts
+  - id: agent.pipeline
+    name: STT/LLM/TTS vendors and pipeline parameters in server/src/agent.py
+  - id: agent.greeting
+    name: Agent opening utterance via AGENT_GREETING env var
+invariants:
+  - id: secrets.server-only
+    summary: AGORA_APP_CERTIFICATE and OPENAI_API_KEY (BYO) stay in the Python backend; the app receives only the derived Token007.
+  - id: rtm.subscribe-before-start
+    summary: RTM channel subscription (subscribeMessage + subscribeChannel) must complete before /startAgent is called.
+  - id: rtm.explicit-subscribe
+    summary: agora-react-native-rtm 2.x requires explicit client.subscribe(channel); the TS toolkit's subscribeMessage alone does not activate message delivery.
+  - id: data-channel.rtm
+    summary: Backend always sets data_channel="rtm" and advanced_features.enable_rtm=True; the toolkit depends on this for transcript/state.
+stable_contracts:
+  - id: env.required
+    summary: AGORA_APP_ID and AGORA_APP_CERTIFICATE are required; OPENAI_API_KEY is optional (Agora-managed keyless by default).
+  - id: api.core-routes
+    summary: GET /get_config, POST /startAgent, and POST /stopAgent are the stable token-service endpoints.
+  - id: response.envelope
+    summary: Successful responses use { code: 0, msg: "success", data: ... }; data is omitted on stopAgent.
+  - id: agent-config.shape
+    summary: getConfig returns { app_id, token, uid (string), channel_name, agent_uid (string) }.
+---
+
+# Recipe Contract
+
+This base recipe defines the reusable surface for a React Native (TypeScript) Agora Conversational AI quickstart using `agora-agent-client-toolkit` with two engine adapters.
+
+## Recipe Role
+
+- Role: `base` recipe (self-contained, clone-and-run; no `Extends` pin).
+- Target audience: developers building a React Native voice-agent app backed by a keyless Agora Conversational AI pipeline.
+- Reuse model: clone, set `AGORA_APP_ID` + `AGORA_APP_CERTIFICATE` in `server/.env.local`, run the server, run the app, then customize screens or pipeline.
+
+## Recipe Scope
+
+- Python FastAPI token generation and agent lifecycle (Deepgram STT → OpenAI → MiniMaxTTS, Agora-managed).
+- Two React Native engine adapters (`RtcEngineAdapter`, `RtmEngineAdapter`) wrapping `react-native-agora` and `agora-react-native-rtm`.
+- `AgoraSession` orchestrating RTM login → RTC join → toolkit init → subscribe → startAgent.
+- `useCallStore` React hook owning all call state.
+- `LandingScreen` + `CallScreen` minimal UI.
+
+## Baseline Implementation Guidance
+
+Use this repo's adapter implementations as the starting point for any RN client. The RTM event translation, presence synthesis, and subscribe ordering are non-obvious — do not recreate from memory. Copy verified patterns from `rn/src/agora/`.
+
+## Extension Points
+
+| ID | Surface | How to extend | Required follow-up |
+|----|---------|---------------|--------------------|
+| `app.screens` | `rn/src/ui/`, `rn/src/CallState.ts`, `rn/App.tsx` | Add screens, add Phase values, add actions to `useCallStore` | Run `npx tsc --noEmit`; verify Android with `assembleDebug` |
+| `app.backend-url` | `rn/src/config.ts` | Change `AGENT_BACKEND_URL` for real device or remote backend | Update README with the correct host alias |
+| `agent.pipeline` | `server/src/agent.py` `Agent.start()` | Swap `DeepgramSTT`, `OpenAI`, `MiniMaxTTS` for other vendors | Run `cd server && pytest -q`; verify `data_channel="rtm"` is preserved |
+| `agent.greeting` | `AGENT_GREETING` env var or `server/.env.local` | Set a custom opening utterance | No code change needed |
+
+## Invariants
+
+- `AGORA_APP_CERTIFICATE` lives only in `server/.env.local`; never expose it to the RN app.
+- RTM channel must be subscribed (both `ai.subscribeMessage` and `rtm.subscribeChannel`) before `startAgent` is called.
+- `data_channel="rtm"` and `advanced_features={"enable_rtm": True}` must remain set on the backend agent; the toolkit depends on them.
+- The `agora-react-native-rtm` 2.x SDK requires explicit channel subscribe — the TS toolkit does not subscribe internally.
+
+## Stable Contracts
+
+| Contract | Stable shape |
+|----------|-------------|
+| Required backend env | `AGORA_APP_ID`, `AGORA_APP_CERTIFICATE` |
+| Optional backend env | `OPENAI_MODEL`, `OPENAI_API_KEY`, `AGENT_GREETING` |
+| `GET /get_config` | Returns `data.app_id`, `data.token`, `data.uid` (string), `data.channel_name`, `data.agent_uid` (string) |
+| `POST /startAgent` | Body `{ channelName, rtcUid, userUid, parameters? }`; returns `data.agent_id`, `data.channel_name`, `data.status` |
+| `POST /stopAgent` | Body `{ agentId }`; returns `{ code: 0, msg: "success" }` |
+| Success envelope | `{ "code": 0, "msg": "success", "data": ... }` |
+
+## Internal / Subject to Change
+
+- Visual layout, StyleSheet values, and button labels in `rn/src/ui/`.
+- Exact STT model (`nova-3`), LLM model (`gpt-4o-mini`), TTS voice, as long as `data_channel="rtm"` is preserved.
+- In-memory `_sessions` dict details; the stable behavior is start-by-channel and stop-by-returned-`agent_id`.
+- `agora-agents` SDK minor-version behavior; this recipe lower-bounds `>=2.3.0`.
+
+## Related Progressive Disclosure Docs
+
+- `L1/01_setup.md` — install, env, and run commands.
+- `L1/02_architecture.md` — topology and session lifecycle.
+- `L1/06_interfaces.md` — route, AgentConfig, and toolkit event contracts.
+- `L1/L2/rtm_adapter_and_session.md` — RTM adapter and subscribe ordering in depth.
+- `L1/L2/native_dependency_setup.md` — CocoaPods and Android autolinking.
diff --git a/docs/ai/test-results.md b/docs/ai/test-results.md
new file mode 100644
index 0000000..33585e4
--- /dev/null
+++ b/docs/ai/test-results.md
@@ -0,0 +1,92 @@
+# Progressive Disclosure — Test Results
+
+> Test run for `recipe-client-rn-quickstart` progressive disclosure docs.
+> Date: 2026-06-25 · Standard: AgoraIO-Community/ai-devkit progressive-disclosure.
+
+## Step 1 — Structural checks
+
+| Check | Result |
+|-------|--------|
+| `L0_repo_card.md` ≤ 50 lines | Pass (36) |
+| All 8 L1 files present | Pass |
+| Each L1 has purpose blockquote + Related Deep Dives | Pass |
+| L1 line counts in 80–200 target | **Mixed** (42–98) — 04 and 08 below 80; see note |
+| L2 `_index.md` present | Pass |
+| Each L2 opens with "When to Read This" callout | Pass (2/2) |
+| Relative links resolve (docs/ai/ + AGENTS.md, file targets) | Pass (31/31, 0 broken file targets; 2 directory links in AGENTS.md resolve as directories — valid on GitHub) |
+| AGENTS.md has How to Load / Git Conventions / Doc Commands | Pass |
+
+**Note on L1 line counts:** `04_conventions.md` (42) and `08_security.md` (45) are below the 80-line soft target. Both are table-dense and information-complete. The standard warns against padding, so they were left concise. Accepted deviation.
+
+## Step 2/3 — Question runs
+
+Questions span the five standard categories. Each answer was verified against repo source before being marked Pass. "Level" is the lowest disclosure level that fully answers the question.
+
+### Setup & Build
+
+| # | Question | Expected answer | Source of truth | Level | Status |
+|---|----------|-----------------|-----------------|-------|--------|
+| 1 | How do I run this locally? | Start `server/` with `python src/server.py`; run the RN app with `npx react-native run-android` or `run-ios` | `L1/01_setup.md` ↔ `README.md` | L1 | Pass |
+| 2 | Which env vars are required? | `AGORA_APP_ID`, `AGORA_APP_CERTIFICATE` — no LLM key needed (keyless pipeline) | `L1/01_setup.md`, `06_interfaces.md` ↔ `server/.env.example`, `agent.py` | L1 | Pass |
+| 3 | Is there a TypeScript check I can run without a device? | Yes: `cd rn && npx tsc --noEmit` — ran in CI without Android/iOS toolchain | `L1/01_setup.md` ↔ CI `ci.yml` | L1 | Pass (ran: 0 errors) |
+
+### Test & Run
+
+| # | Question | Expected answer | Source of truth | Level | Status |
+|---|----------|-----------------|-----------------|-------|--------|
+| 4 | How do I run Jest tests without a server? | `cd rn && npm test` — mocks `fetch`; no server or device needed | `L1/01_setup.md` ↔ `__tests__/BackendApi.test.ts` | L1 | Pass (ran: 2 passed) |
+| 5 | How do I run backend tests without cloud credentials? | `cd server && pytest -q` with `venv_test` (agora-agents 2.3.0); `conftest.py` provides fake env | `L1/01_setup.md` ↔ `server/tests/conftest.py` | L1 | Pass (ran with venv_test: 2 passed; note: `venv` has stale 2.2.0 — see note below) |
+| 6 | What does the CI gate run for the RN job? | `npm ci` → `tsc --noEmit` → `npm test --ci` → `assembleDebug` (JDK 21 + Android SDK) | `L1/01_setup.md` ↔ `.github/workflows/ci.yml` | L1 | Pass |
+
+**Note on backend venv:** The repo ships two venvs. `venv/` has `agora-agents 2.2.0` (stale); `venv_test/` has `2.3.0` (correct). The `test_agent_construction.py` test fails with 2.2.0 due to the 2.3.x constructor change. This is a pre-existing local state issue, not a docs issue. Use `venv_test` or recreate `venv` with `uv pip install -r requirements.txt`.
+
+### Conventions
+
+| # | Question | Expected answer | Source of truth | Level | Status |
+|---|----------|-----------------|-----------------|-------|--------|
+| 7 | What response shape does the backend use? | `{ code: 0, msg: "success", data: {...} }`; `data` omitted on stopAgent | `L1/04_conventions.md`, `06_interfaces.md` ↔ `server.py` | L1 | Pass |
+| 8 | How does turn-type discrimination work for transcript? | `item.metadata.object === MessageType.AGENT_TRANSCRIPTION` → `'agent'`, else `'user'`; composite key `` `${turnId}-${type}` `` | `L1/04_conventions.md` ↔ `CallState.ts` | L1 | Pass |
+| 9 | What are the commit/branch conventions? | Conventional commits `type: description`; branches `type/short-description`; no AI tool names | `AGENTS.md` Git Conventions | L0 | Pass |
+
+### Development
+
+| # | Question | Expected answer | Source of truth | Level | Status |
+|---|----------|-----------------|-----------------|-------|--------|
+| 10 | How do I add a new screen? | Create `rn/src/ui/YourScreen.tsx`; add Phase value in `CallState.ts`; add action in `useCallStore`; branch in `App.tsx AppContent` | `L1/05_workflows.md` ↔ `App.tsx`, `CallState.ts` | L1 | Pass |
+| 11 | How do I change the token endpoint URL? | Edit `AGENT_BACKEND_URL` in `rn/src/config.ts`; Android emulator = `10.0.2.2:8000`, iOS Simulator = `localhost:8000` | `L1/05_workflows.md`, `07_gotchas.md` ↔ `config.ts` | L1 | Pass |
+| 12 | Where does token generation live and what must stay server-side? | `server/src/server.py` `generate_convo_ai_token`; `AGORA_APP_CERTIFICATE` must never reach the RN app | `L1/02_architecture.md`, `08_security.md` ↔ `server.py` | L1 | Pass |
+
+### Deep Dive
+
+| # | Question | Expected answer | Source of truth | Level | Status |
+|---|----------|-----------------|-----------------|-------|--------|
+| 13 | Why must `subscribeChannel` be called separately from `subscribeMessage`? | TS toolkit's `subscribeMessage` only binds listeners; RTM 2.x requires `client.subscribe(channel)` to activate message delivery (unlike native iOS/Android toolkits) | `L2/rtm_adapter_and_session.md` ↔ `RtmEngineAdapter.ts`, `AgoraSession.ts` | L2 | Pass |
+| 14 | How is the RN RTM `PresenceEvent` translated for the toolkit? | `stateItems: {key,value}[]` folded into a map; `stateChanged: {state, turn_id}` synthesized | `L2/rtm_adapter_and_session.md` ↔ `RtmEngineAdapter.ts` | L2 | Pass |
+| 15 | Why must CocoaPods be re-run after `npm install` changes? | `react-native-agora` and `agora-react-native-rtm` ship native code installed via Pods; JS-side package changes are not reflected until `pod install` re-runs | `L2/native_dependency_setup.md` ↔ `ios/Podfile`, `07_gotchas.md` | L2 | Pass |
+
+## Step 4 — Analysis
+
+- All 15 questions answered at the expected disclosure level (12 at L1, 3 at L2).
+- No missing-coverage findings; no broken file references.
+- Two soft deviations: `04_conventions.md` and `08_security.md` line counts below 80 (accepted; concise/table-dense).
+- Pre-existing local state issue: `venv/` contains stale `agora-agents 2.2.0`; `venv_test/` has the correct `2.3.0`. Backend tests pass with the correct venv. Documented but not a docs correctness issue.
+
+## Step 5 — Summary
+
+| Category | Questions | Pass | Notes |
+|----------|:---------:|:----:|-------|
+| Setup & Build | 3 | 3 | `tsc --noEmit` executed: 0 errors |
+| Test & Run | 3 | 3 | Jest: 2 passed; backend pytest (venv_test): 2 passed |
+| Conventions | 3 | 3 | — |
+| Development | 3 | 3 | — |
+| Deep Dive | 3 | 3 | resolved at L2 as designed |
+| **Total** | **15** | **15** | — |
+
+## Step 6 — Fixes / Retest
+
+No failing questions; no fixes required. Evidence executed during this run:
+
+- `cd rn && npx tsc --noEmit` → 0 errors.
+- `cd rn && npm test --ci` → 2 passed.
+- `cd server && pytest -q` (venv_test, agora-agents 2.3.0) → 2 passed.
+- Relative link check → 33 checked, 0 broken file targets (2 directory links in AGENTS.md are valid GitHub directory links).