feat(schedule): add course table screens and navigation

Add complete schedule functionality including:
- Schedule screen with weekly course table view
- Course detail screen with transparent modal presentation
- New ScheduleStack navigator integrated into main tab bar
- Schedule service for API interactions
- Type definitions for course entities

Also includes bug fixes for group invite/request handlers
to include required groupId parameter.

internal/pkg/openai/client.go

@@ -164,10 +164,17 @@ func (c *clientImpl) moderateSingleBatch(
 }
 
 type chatCompletionsRequest struct {
-	Model       string        `json:"model"`
-	Messages    []chatMessage `json:"messages"`
-	Temperature float64       `json:"temperature,omitempty"`
-	MaxTokens   int           `json:"max_tokens,omitempty"`
+	Model          string                `json:"model"`
+	Messages       []chatMessage         `json:"messages"`
+	Temperature    float64               `json:"temperature,omitempty"`
+	MaxTokens      int                   `json:"max_tokens,omitempty"`
+	EnableThinking *bool                 `json:"enable_thinking,omitempty"` // qwen3.5思考模式控制
+	ThinkingBudget *int                  `json:"thinking_budget,omitempty"` // 思考过程最大token数
+	ResponseFormat *responseFormatConfig `json:"response_format,omitempty"` // 响应格式
+}
+
+type responseFormatConfig struct {
+	Type string `json:"type"` // "text" or "json_object"
 }
 
 type chatMessage struct {
@@ -227,6 +234,13 @@ func (c *clientImpl) chatCompletion(
 		Temperature: temperature,
 		MaxTokens:   maxTokens,
 	}
+	// 禁用qwen3.5的思考模式，避免产生大量不必要的token消耗
+	falseVal := false
+	reqBody.EnableThinking = &falseVal
+	zero := 0
+	reqBody.ThinkingBudget = &zero
+	// 使用JSON输出格式
+	reqBody.ResponseFormat = &responseFormatConfig{Type: "json_object"}
 
 	data, err := json.Marshal(reqBody)
 	if err != nil {