Add exec timeout conventions to TOOLS.md

TOOLS.md

@@ -80,3 +80,9 @@ Add whatever helps you do your job. This is your cheat sheet.
 - User: `greggy`
 - Workspace Repo: `/root/.openclaw/workspace`
 - Credentials in `.bashrc`/`.profile`
+
+### Exec-Timeouts (Konventionen)
+
+- Kurze CLI-Abfragen: **150 Sekunden**
+- Python-Skripte: **300 Sekunden**
+- Browser-Vorgänge: **300 Sekunden**