Add session auth: FastAPI login/logout/me endpoints, uv-managed deps, fix cookie on JSONResponse

scripts/dev.sh

@@ -17,13 +17,8 @@ fi
 # Start edit sidecar if requested
 if [[ "$*" == *"--edit"* ]]; then
   echo "Starting edit sidecar on :8001..."
-  UVICORN="$ROOT/.venv/bin/uvicorn"
-  if [ ! -x "$UVICORN" ]; then
-    echo "Setting up Python venv..."
-    python3 -m venv "$ROOT/.venv"
-    "$ROOT/.venv/bin/pip" install -r "$ROOT/edit/requirements.txt" -q
-  fi
-  (cd "$ROOT" && "$UVICORN" edit.server:app --reload --port 8001) &
+  uv sync -q
+  uv run uvicorn edit.server:app --reload --port 8001 &
   SIDECAR_PID=$!
   trap "kill $SIDECAR_PID 2>/dev/null" EXIT
 fi