fix: query-terminal stream, enable-mouse/bracketed-paste methods, simple-backend draw-ellipsis position

backend/detection.lisp

@@ -28,13 +28,13 @@ Returns T if stdout is interactive, nil otherwise."
 (defun query-terminal (query &optional (timeout 0.1))
   "Send QUERY string to terminal and return any response received within
 TIMEOUT seconds. Returns the response string, or nil if no response."
-  (write-string query *query-io*)
-  (force-output *query-io*)
+  (write-string query *standard-output*)
+  (force-output *standard-output*)
   (sleep timeout)
   (let ((response (make-array 0 :element-type 'character
                               :fill-pointer 0 :adjustable t)))
-    (loop while (listen *query-io*)
-          do (vector-push-extend (read-char-no-hang *query-io*) response))
+    (loop while (listen *standard-input*)
+          do (vector-push-extend (read-char-no-hang *standard-input*) response))
     (when (plusp (length response))
       response)))
 

backend/modern.lisp

@@ -289,6 +289,16 @@ as a fallback when a keyword is not in *named-colors*.")
 (defmethod cursor-style ((b modern-backend) shape &key blink)
   (backend-write b (cursor-style-escape shape blink)))
 
+(defmethod enable-mouse ((b modern-backend))
+  (backend-write b (format nil "~C[?1000h" #\Esc))  ; basic
+  (backend-write b (format nil "~C[?1002h" #\Esc))  ; drag
+  (backend-write b (format nil "~C[?1006h" #\Esc))  ; SGR
+  (finish-output (backend-output-stream b)))
+
+(defmethod enable-bracketed-paste ((b modern-backend))
+  (backend-write b (format nil "~C[?2004h" #\Esc))  ; bracketed paste
+  (finish-output (backend-output-stream b)))
+
 (defmethod begin-sync ((b modern-backend))
   (setf (in-sync-p b) t)
   (backend-write b (decicm-begin)))

backend/simple.lisp

@@ -101,5 +101,8 @@ POS is :top-left, :top-right, :bottom-left, :bottom-right,
 
 (defmethod draw-ellipsis ((b simple-backend) x y width
                           &key fg bg)
-  (declare (ignore x y width fg bg))
+  (declare (ignore width fg bg))
+  ;; Position using newlines+spaces (simple-backend pattern)
+  (dotimes (row y) (backend-write b (string #\Newline)))
+  (backend-write b (make-string x :initial-element #\Space))
   (backend-write b "..."))