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/comment_service.go

@@ -135,7 +135,7 @@ func (s *CommentService) reviewCommentAsync(
 		Images:    imageURLs,
 		AuthorID:  authorID,
 		ParentID:  parentID,
-	}, map[string]interface{}{
+	}, map[string]any{
 		"result": result,
 	})