fix(gemini): 使用 JSON Schema 传递工具参数

apps/api/internal/clients/clients_test.go

@@ -1406,7 +1406,24 @@ func TestGeminiClientChatRestoresToolContext(t *testing.T) {
 				"function": map[string]any{
 					"name":        "get_weather",
 					"description": "lookup weather",
-					"parameters":  map[string]any{"type": "object"},
+					"parameters": map[string]any{
+						"type": "object",
+						"properties": map[string]any{
+							"location": map[string]any{
+								"anyOf": []any{
+									map[string]any{"type": "string"},
+									map[string]any{
+										"type": "object",
+										"properties": map[string]any{
+											"city": map[string]any{"type": "string"},
+										},
+										"required": []any{"city"},
+									},
+								},
+							},
+						},
+						"required": []any{"location"},
+					},
 				},
 			}},
 		},
@@ -1450,6 +1467,18 @@ func TestGeminiClientChatRestoresToolContext(t *testing.T) {
 	if declaration["name"] != "get_weather" || declaration["description"] != "lookup weather" {
 		t.Fatalf("tool declaration was not converted for Gemini: %+v", captured["tools"])
 	}
+	if _, exists := declaration["parameters"]; exists {
+		t.Fatalf("Gemini tool declaration must not use OpenAPI parameters: %+v", declaration)
+	}
+	parameters, _ := declaration["parametersJsonSchema"].(map[string]any)
+	properties, _ := parameters["properties"].(map[string]any)
+	location, _ := properties["location"].(map[string]any)
+	anyOf, _ := location["anyOf"].([]any)
+	nestedObject, _ := anyOf[1].(map[string]any)
+	required, _ := nestedObject["required"].([]any)
+	if len(anyOf) != 2 || len(required) != 1 || required[0] != "city" {
+		t.Fatalf("Gemini JSON Schema was not preserved: %+v", declaration)
+	}
 }
 
 func TestGeminiClientChatConvertsFunctionCallResponse(t *testing.T) {

apps/api/internal/clients/gemini.go

@@ -523,7 +523,7 @@ func geminiToolsFromOpenAITools(value any) []any {
 			declaration["description"] = description
 		}
 		if parameters, ok := function["parameters"]; ok {
-			declaration["parameters"] = parameters
+			declaration["parametersJsonSchema"] = parameters
 		}
 		declarations = append(declarations, declaration)
 	}