docs: update AI module README with latest features

- Add comprehensive documentation for the new Query functionality
- Update interface method names from Call to Plan for consistency
- Add OpenAI GPT-4O model support documentation
- Include detailed usage examples for basic and custom schema queries
- Add configuration examples for multiple model services
- Document new features like ResetHistory, Usage statistics, and automatic type conversion
- Expand advanced features section with custom output format examples
- Update all code examples to reflect the latest API changes

The documentation now reflects the current state of the AI module with all three core capabilities:
- Planning (renamed from Call)
- Assertion
- Query (new feature)

All examples and configurations are updated to match the latest implementation.

uixt/ai/planner_test.go

@@ -52,7 +52,7 @@ func TestVLMPlanning(t *testing.T) {
 	}
 
 	// 执行规划
-	result, err := planner.Call(context.Background(), opts)
+	result, err := planner.Plan(context.Background(), opts)
 
 	// 验证结果
 	require.NoError(t, err)
@@ -95,7 +95,7 @@ func TestXHSPlanning(t *testing.T) {
 	}
 
 	// 执行规划
-	result, err := planner.Call(context.Background(), opts)
+	result, err := planner.Plan(context.Background(), opts)
 
 	// 验证结果
 	require.NoError(t, err)
@@ -138,7 +138,7 @@ func TestChatList(t *testing.T) {
 	}
 
 	// 执行规划
-	result, err := planner.Call(context.Background(), opts)
+	result, err := planner.Plan(context.Background(), opts)
 
 	// 验证结果
 	require.NoError(t, err)
@@ -183,7 +183,7 @@ func TestHandleSwitch(t *testing.T) {
 		}
 
 		// Execute planning
-		result, err := planner.Call(context.Background(), opts)
+		result, err := planner.Plan(context.Background(), opts)
 
 		// Validate results
 		require.NoError(t, err)