refactor: upgrade to Go 1.26 and modernize code idioms

- Replace `interface{}` with `any` type alias across all packages
- Use built-in `min()`/`max()` for parameter clamping
- Use `slices.SortFunc`, `slices.Min`, `slices.Max` for cleaner code
- Use `strings.Cut()` for simpler string parsing in auth middleware
- Use `errors.Is()` for proper error comparison in handlers
- Update dependencies: golang.org/x/image 0.37.0 -> 0.38.0
- Add Wire code generation guidelines to ARCHITECTURE.md
- Disable Go cache in CI build workflow

internal/service/post_service.go

@@ -66,8 +66,7 @@ type PostService interface {
 	IncrementViews(ctx context.Context, postID, userID string) error
 	// RecordShare 记录分享（仅已发布帖子计数 +1），返回最新 shares_count
 	RecordShare(ctx context.Context, postID, userID string) (sharesCount int, err error)
-
-	}
+}
 
 // postServiceImpl 帖子服务实现
 type postServiceImpl struct {
@@ -103,9 +102,9 @@ func (s *postServiceImpl) Create(ctx context.Context, userID, title, content str
 	post := &model.Post{
 		UserID:    userID,
 		ChannelID: channelID,
-		Title:       title,
-		Content:     content,
-		Status:      model.PostStatusPending,
+		Title:     title,
+		Content:   content,
+		Status:    model.PostStatusPending,
 	}
 
 	err := s.postRepo.Create(post, images)
@@ -166,7 +165,7 @@ func (s *postServiceImpl) reviewPostAsync(postID, userID, title, content string,
 		Content:  content,
 		Images:   images,
 		AuthorID: authorID,
-	}, map[string]interface{}{
+	}, map[string]any{
 		"result": result,
 	})