init: AI chat with FastAPI + SQLite + tools

fetch_balance.py

@@ -0,0 +1,11 @@
+import json, requests, os
+BALANCE_FILE = '/var/www/nav/data/balance.json'
+try:
+    r = requests.get('https://api.deepseek.com/user/balance',
+        headers={'Authorization': 'Bearer sk-bbca4a0380d549389f0d27cdea0b5228'}, timeout=10)
+    data = r.json()
+    with open(BALANCE_FILE, 'w') as f:
+        json.dump(data, f)
+    print('OK:', data.get('balance_infos', [{}])[0].get('total_balance', '?'))
+except Exception as e:
+    print('Error:', e)