build(client): use locked uv environment in launcher and Docker

start_ui.sh

@@ -2,8 +2,8 @@
 set -euo pipefail
 
 ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-VENV_DIR="$ROOT_DIR/.venv"
-REQ_FILE="$ROOT_DIR/s2s-client/requirements.txt"
+CLIENT_DIR="$ROOT_DIR/s2s-client"
+VENV_DIR="$CLIENT_DIR/.venv"
 FRONTEND_DIR="$ROOT_DIR/s2s-frontend"
 if [ -f "$ROOT_DIR/.env" ]; then
   set -a
@@ -20,7 +20,7 @@ if (( BASH_VERSINFO[0] < 4 || (BASH_VERSINFO[0] == 4 && BASH_VERSINFO[1] < 4) ))
   exit 1
 fi
 
-for required_command in python3 node npm setsid curl; do
+for required_command in uv node npm setsid curl; do
   if ! command -v "$required_command" >/dev/null 2>&1; then
     echo "Error: $required_command was not found."
     exit 1
@@ -46,22 +46,13 @@ if [ "$UI_PORT" = "$S2S_BACKEND_PORT" ]; then
   exit 1
 fi
 
-if [ ! -d "$VENV_DIR" ]; then
-  echo "Creating the virtual environment in .venv..."
-  python3 -m venv "$VENV_DIR"
-fi
-
-source "$VENV_DIR/bin/activate"
-
-if [ ! -f "$REQ_FILE" ]; then
-  echo "Error: requirements file was not found: $REQ_FILE"
+if [ ! -f "$CLIENT_DIR/pyproject.toml" ] || [ ! -f "$CLIENT_DIR/uv.lock" ]; then
+  echo "Error: s2s-client/pyproject.toml and s2s-client/uv.lock are required."
   exit 1
 fi
 
-if ! python -c "import fastapi, uvicorn, httpx, dotenv, websockets" >/dev/null 2>&1; then
-  echo "Installing dependencies from s2s-client/requirements.txt..."
-  python -m pip install -r "$REQ_FILE"
-fi
+# uv manages only the client environment; an existing root speech venv is separate.
+UV_PROJECT_ENVIRONMENT="$VENV_DIR" uv sync --project "$CLIENT_DIR" --locked
 
 # Keep restarts offline when the installed frontend manifests have not changed.
 if [ ! -f "$FRONTEND_DIR/node_modules/vite/bin/vite.js" ] || \
@@ -118,10 +109,10 @@ echo " Press Ctrl+C in this terminal to stop both servers."
 echo "----------------------------------------------------"
 
 cd "$ROOT_DIR"
-setsid "$VENV_DIR/bin/python" -m uvicorn server:app \
-  --app-dir "$ROOT_DIR/s2s-client" \
+setsid "$VENV_DIR/bin/python" -m uvicorn s2s_client.main:app \
+  --app-dir "$CLIENT_DIR" \
   --host 127.0.0.1 --port "$S2S_BACKEND_PORT" \
-  --reload --reload-dir "$ROOT_DIR/s2s-client" &
+  --reload --reload-dir "$CLIENT_DIR" &
 backend_pid=$!
 child_pids+=("$backend_pid")