captsa add alert

routes/api.py

@@ -122,3 +122,25 @@ def command_result(cmd_id):
     conn.commit()
     conn.close()
     return jsonify({'ok': True})
+
+
+# ------------------------------------------------------------------
+# POST /api/captcha/alert
+# Tampermonkey reports when #hcaptcha_window appears/disappears.
+# Body: { detected: true | false }
+# ------------------------------------------------------------------
+@api.route('/api/captcha/alert', methods=['POST'])
+def captcha_alert():
+    data = request.get_json(silent=True) or {}
+    detected = bool(data.get('detected', False))
+    conn = get_db()
+    conn.execute('''
+        INSERT INTO kv_store (key, value, updated_at)
+        VALUES ('captcha_active', ?, ?)
+        ON CONFLICT(key) DO UPDATE SET
+            value      = excluded.value,
+            updated_at = excluded.updated_at
+    ''', ('1' if detected else '0', datetime.utcnow().isoformat()))
+    conn.commit()
+    conn.close()
+    return jsonify({'ok': True})