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.

vocero-api/Dockerfile

@@ -0,0 +1,25 @@
+# Build from the project root: docker build -f vocero-api/Dockerfile -t vocero-api .
+# Serve backend APIs, the WebSocket proxy, and shared project documentation.
+# Run the React/Vite frontend separately; this image contains no browser UI.
+# HF Spaces (sdk: docker) routes traffic to $PORT, default 7860.
+FROM python:3.12.14-slim
+
+COPY --from=ghcr.io/astral-sh/uv:0.12.5 /uv /uvx /bin/
+
+ENV UV_LINK_MODE=copy \
+    UV_PYTHON_DOWNLOADS=never \
+    PATH="/app/vocero-api/.venv/bin:$PATH"
+
+WORKDIR /app/vocero-api
+
+COPY vocero-api/pyproject.toml vocero-api/uv.lock ./
+RUN uv sync --locked --no-dev --no-install-project
+
+COPY vocero-api/README.md vocero-api/server.py ./
+COPY vocero-api/vocero_api/ ./vocero_api/
+COPY docs/ /app/docs/
+RUN uv sync --locked --no-dev
+
+EXPOSE 7860
+
+CMD ["uvicorn", "vocero_api.main:app", "--host", "0.0.0.0", "--port", "7860"]