added start script

README.md

@@ -12,6 +12,15 @@ source .venv/bin/activate
 pip install -e .
 ```
 
+Or use the helper script, which creates/uses `.venv` automatically and runs `pip install -e .`:
+
+```bash
+./start.sh
+./start.sh status
+./start.sh analyze
+./start.sh stop
+```
+
 Analyze local logs:
 
 ```bash
@@ -24,6 +33,18 @@ Listen for FortiGate syslog locally:
 fgai listen-syslog --port 5514 --output logs/fg_syslog.jsonl
 ```
 
+Run the listener quietly in the background:
+
+```bash
+./start.sh
+```
+
+Stop the background listener:
+
+```bash
+./start.sh stop
+```
+
 UDP port `514` normally needs root privileges on Linux:
 
 ```bash