refactor: rename API and frontend projects to Vocero

Rename the project directories, Python distribution and import package, and npm package. Update launcher, Docker, tooling, tests, lockfiles, and documentation while preserving existing API contracts.

Make AGENTS.md self-contained and remove external skill and workflow references.

docs/client/architecture.md

@@ -1,7 +1,7 @@
 # Client architecture
 
-The [React browser client](../../s2s-frontend) uses the
-[FastAPI backend](../../s2s-client) for HTTP APIs and a speech WebSocket relay.
+The [React browser client](../../vocero-frontend) uses the
+[FastAPI backend](../../vocero-api) for HTTP APIs and a speech WebSocket relay.
 `start_ui.sh` serves Vite on the existing public port `8420` and FastAPI on
 loopback port `8421`. Vite forwards backend routes and provides hot reload;
 Uvicorn reloads Python edits. The launcher supervises both processes.
@@ -42,22 +42,22 @@ audio. It is not an unconditional byte-for-byte tunnel.
 
 | Source | Responsibility |
 |---|---|
-| [server.py](../../s2s-client/server.py) | Compatibility entry point for existing `server:app` commands |
-| [main.py](../../s2s-client/s2s_client/main.py) | FastAPI assembly, documentation serving and redirects |
-| [api](../../s2s-client/s2s_client/api) | HTTP route registration, handlers and compatible response validation |
-| [models](../../s2s-client/s2s_client/models) | Pydantic request and response contracts |
-| [core](../../s2s-client/s2s_client/core) | Existing environment parsing, logging, URL helpers and diagnostics |
-| [providers](../../s2s-client/s2s_client/providers) | Caller context and ApiPilot HTTP integrations |
-| [services](../../s2s-client/s2s_client/services) | Context construction, reasoning and tool-context rendering |
-| [realtime](../../s2s-client/s2s_client/realtime) | WebSocket relay, events, markers and audio handling |
+| [server.py](../../vocero-api/server.py) | Compatibility entry point for existing `server:app` commands |
+| [main.py](../../vocero-api/vocero_api/main.py) | FastAPI assembly, documentation serving and redirects |
+| [api](../../vocero-api/vocero_api/api) | HTTP route registration, handlers and compatible response validation |
+| [models](../../vocero-api/vocero_api/models) | Pydantic request and response contracts |
+| [core](../../vocero-api/vocero_api/core) | Existing environment parsing, logging, URL helpers and diagnostics |
+| [providers](../../vocero-api/vocero_api/providers) | Caller context and ApiPilot HTTP integrations |
+| [services](../../vocero-api/vocero_api/services) | Context construction, reasoning and tool-context rendering |
+| [realtime](../../vocero-api/vocero_api/realtime) | WebSocket relay, events, markers and audio handling |
 | [start_ui.sh](../../start_ui.sh) | Dependency setup, ports, readiness, reload processes, and shutdown |
-| [vite.config.ts](../../s2s-frontend/vite.config.ts) | Public development endpoint, HMR, allowed hosts, and backend routing |
-| [App.tsx](../../s2s-frontend/src/App.tsx) | React layout, voice controls, dialogs, profile and reports sidebar |
-| [controller.ts](../../s2s-frontend/src/realtime/controller.ts) | Application state, settings, context, queue, tools and external reasoning |
-| [client.ts](../../s2s-frontend/src/realtime/client.ts) | Realtime protocol, session lifecycle, audio and transcript events |
-| [components](../../s2s-frontend/src/components) | Chat, caller profile, settings and voice components |
-| [audio](../../s2s-frontend/src/audio) | TypeScript capture/playback worklets, PCM codec, and visualizer |
-| [legacy-theme.css](../../s2s-frontend/src/styles/legacy-theme.css) | Retained themes and responsive visual styles alongside Tailwind |
+| [vite.config.ts](../../vocero-frontend/vite.config.ts) | Public development endpoint, HMR, allowed hosts, and backend routing |
+| [App.tsx](../../vocero-frontend/src/App.tsx) | React layout, voice controls, dialogs, profile and reports sidebar |
+| [controller.ts](../../vocero-frontend/src/realtime/controller.ts) | Application state, settings, context, queue, tools and external reasoning |
+| [client.ts](../../vocero-frontend/src/realtime/client.ts) | Realtime protocol, session lifecycle, audio and transcript events |
+| [components](../../vocero-frontend/src/components) | Chat, caller profile, settings and voice components |
+| [audio](../../vocero-frontend/src/audio) | TypeScript capture/playback worklets, PCM codec, and visualizer |
+| [legacy-theme.css](../../vocero-frontend/src/styles/legacy-theme.css) | Retained themes and responsive visual styles alongside Tailwind |
 
 ## Server routes
 
@@ -79,9 +79,9 @@ explorer, while project documentation files are served in the `/docs/`
 subdirectories. Markdown remains
 source text, and directories without `index.html` are not browsable pages.
 FastAPI serves backend and documentation routes only. The frontend source and
-assets live in `s2s-frontend` and are served by Vite.
+assets live in `vocero-frontend` and are served by Vite.
 
-The uv project and its Python tools are scoped to `s2s-client/`. Response models
+The uv project and its Python tools are scoped to `vocero-api/`. Response models
 describe service-owned structure and retain loose upstream values. See
 [development and compatibility](development.md) before tightening a contract.
 
@@ -89,11 +89,11 @@ describe service-owned structure and retain loose upstream values. See
 
 1. The browser captures microphone audio with echo cancellation, noise
    suppression and automatic gain-control settings.
-2. [mic-capture.worklet.ts](../../s2s-frontend/src/audio/mic-capture.worklet.ts) resamples to 16 kHz
+2. [mic-capture.worklet.ts](../../vocero-frontend/src/audio/mic-capture.worklet.ts) resamples to 16 kHz
    mono PCM16. The browser sends base64 `input_audio_buffer.append` frames.
 3. The backend processes VAD → STT → LLM → TTS and emits realtime events.
 4. Assistant PCM16 audio at the current 16 kHz protocol rate is decoded and sent to
-   [audio-playback.worklet.ts](../../s2s-frontend/src/audio/audio-playback.worklet.ts), which buffers,
+   [audio-playback.worklet.ts](../../vocero-frontend/src/audio/audio-playback.worklet.ts), which buffers,
    resamples and fades playback edges. Input speech can clear playback for barge-in.
 
 Audio worklets are loaded through `AudioWorklet.addModule`; keep their processor