Add combined development server launcher

dev.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PIDS=()
+
+cleanup() {
+    local status=$?
+    trap - EXIT INT TERM
+
+    if ((${#PIDS[@]})); then
+        kill "${PIDS[@]}" 2>/dev/null || true
+        wait "${PIDS[@]}" 2>/dev/null || true
+    fi
+
+    exit "$status"
+}
+
+trap cleanup EXIT
+trap 'exit 130' INT
+trap 'exit 143' TERM
+
+cd "$ROOT_DIR"
+
+echo "Starting backend at http://localhost:8000"
+"$ROOT_DIR/.venv/bin/uvicorn" pirats.main:app --host 0.0.0.0 --port 8000 --reload &
+PIDS+=("$!")
+
+echo "Starting frontend at http://localhost:5173"
+(
+    cd "$ROOT_DIR/frontend"
+    exec ./node_modules/.bin/vite
+) &
+PIDS+=("$!")
+
+echo "Press Ctrl-C to stop both servers."
+wait