feat: add configurable client tools and photo input

backend/tests/test_user_input.py

@@ -0,0 +1,57 @@
+import unittest
+
+from services.pipecat.processors import UserInputError, parse_user_input
+
+
+class UserInputParserTests(unittest.TestCase):
+    def test_parses_text_and_current_camera_frame(self):
+        value = parse_user_input(
+            {
+                "type": "user-input",
+                "schema_version": 1,
+                "input_id": "input_1",
+                "parts": [
+                    {"type": "input_text", "text": "帮我看看"},
+                    {
+                        "type": "input_image",
+                        "source": {
+                            "type": "camera_frame",
+                            "frame": "current",
+                        },
+                    },
+                ],
+                "options": {
+                    "run_immediately": True,
+                    "interrupt": True,
+                },
+            }
+        )
+
+        self.assertIsNotNone(value)
+        self.assertEqual(value.text, "帮我看看")
+        self.assertTrue(value.has_camera_frame)
+        self.assertEqual(value.transcript_text, "帮我看看\n已发送一张图片")
+
+    def test_rejects_legacy_and_unsupported_image_sources(self):
+        self.assertIsNone(parse_user_input({"type": "user-text", "text": "旧协议"}))
+        with self.assertRaisesRegex(UserInputError, "当前摄像头"):
+            parse_user_input(
+                {
+                    "type": "user-input",
+                    "schema_version": 1,
+                    "input_id": "input_2",
+                    "parts": [
+                        {
+                            "type": "input_image",
+                            "source": {
+                                "type": "uploaded_asset",
+                                "asset_id": "asset_1",
+                            },
+                        }
+                    ],
+                }
+            )
+
+
+if __name__ == "__main__":
+    unittest.main()