feat(feed_detail): add loadAllComments parameter to GetFeedDetail functionality

- Enhanced GetFeedDetail method to support loading all comments based on the new loadAllComments parameter.
- Updated related handlers and request structures to accommodate the new parameter.
- Improved logging to reflect the loading of all comments during feed detail retrieval.
- Implemented JavaScript logic to scroll and collect comments when loadAllComments is true.

types.go

@@ -36,8 +36,9 @@ type MCPContent struct {
 
 // FeedDetailRequest Feed详情请求
 type FeedDetailRequest struct {
-	FeedID    string `json:"feed_id" binding:"required"`
-	XsecToken string `json:"xsec_token" binding:"required"`
+	FeedID          string `json:"feed_id" binding:"required"`
+	XsecToken       string `json:"xsec_token" binding:"required"`
+	LoadAllComments bool   `json:"load_all_comments,omitempty"`
 }
 
 type SearchFeedsRequest struct {