Backport round-2 fixes to org source files

org/text-input.org: remove (declare (ignore w)) from textarea render;
  add truncation to text-input render (subseq display 0 w)
org/mouse.org: hit-test now uses component-layout-node and recurses
  into children for deepest-match hit testing
org/select.org: render reads layout-node-x/y instead of hardcoded (0,0)
org/scrollbox-tabbar.org: tabbar render reads layout-node-x/y
  instead of hardcoded (0,0); x-pos starts at x offset

All 4 org files tangled clean. 392 tests pass.

org/mouse.org

@@ -59,18 +59,27 @@ module adds:
     (when handler (funcall handler event))))
 
 (defun hit-test (root x y)
+  "Find the deepest component at (X, Y) by testing layout-node bounds.
+Recurses into component-children to find the innermost match.
+Components without a layout-node or position return nil."
   (labels ((recurse (node)
-             (when (and (slot-exists-p node 'x) (slot-boundp node 'x)
-                        (slot-exists-p node 'y) (slot-boundp node 'y)
-                        (slot-exists-p node 'width) (slot-boundp node 'width)
-                        (slot-exists-p node 'height) (slot-boundp node 'height))
-               (let ((nx (slot-value node 'x))
-                     (ny (slot-value node 'y))
-                     (nw (slot-value node 'width))
-                     (nh (slot-value node 'height)))
-                 (when (and (>= x nx) (< x (+ nx nw))
-                            (>= y ny) (< y (+ ny nh)))
-                   node)))))
+             (let ((ln (ignore-errors (component-layout-node node)))
+                   (best nil))
+               (when ln
+                 (let ((nx (layout-node-x ln))
+                       (ny (layout-node-y ln))
+                       (nw (layout-node-width ln))
+                       (nh (layout-node-height ln)))
+                   ;; Check children first for deeper match
+                   (dolist (child (ignore-errors (component-children node)))
+                     (let ((child-hit (recurse child)))
+                       (when child-hit
+                         (setf best child-hit))))
+                   ;; If no child matched, check self
+                   (or best
+                       (when (and (>= x nx) (< x (+ nx nw))
+                                  (>= y ny) (< y (+ ny nh)))
+                         node)))))))
     (recurse root)))
 
 ;; Selection

org/scrollbox-tabbar.org

@@ -504,7 +504,8 @@ they are truncated with an ellipsis.
 #+BEGIN_SRC lisp
 (defmethod render ((tb tab-bar) backend)
   (let* ((ln (tab-bar-layout-node tb))
-         (x 0) (y 0)
+         (x (if ln (layout-node-x ln) 0))
+         (y (if ln (layout-node-y ln) 0))
          (w (if ln (layout-node-width ln) 80))
          (active-id (tab-bar-active tb))
          (tabs (tab-bar-tabs tb))
@@ -664,9 +665,11 @@ Children outside the viewport are skipped."
   (case (key-event-key event) (:left (tab-bar-prev tb) t) (:right (tab-bar-next tb) t) (t nil)))
 
 (defmethod render ((tb tab-bar) backend)
-  (let* ((ln (tab-bar-layout-node tb)) (y 0)
+  (let* ((ln (tab-bar-layout-node tb))
+         (x (if ln (layout-node-x ln) 0))
+         (y (if ln (layout-node-y ln) 0))
          (w (if ln (layout-node-width ln) 80))
-         (active-id (tab-bar-active tb)) (tabs (tab-bar-tabs tb)) (x-pos 0))
+         (active-id (tab-bar-active tb)) (tabs (tab-bar-tabs tb)) (x-pos x))
     (dolist (tab tabs)
       (let* ((id (getf tab :id)) (title (getf tab :title))
              (label (format nil " ~A " title)) (label-len (length label))

org/select.org

@@ -402,7 +402,8 @@ not selectable (visually distinct).
 #+BEGIN_SRC lisp
 (defmethod render ((sel select) backend)
   (let* ((ln (select-layout-node sel))
-         (x 0) (y 0)
+         (x (if ln (layout-node-x ln) 0))
+         (y (if ln (layout-node-y ln) 0))
          (w (if ln (layout-node-width ln) 80))
          (visible (select-visible-options sel))
          (sel-idx (select-selected-index sel)))
@@ -508,7 +509,9 @@ not selectable (visually distinct).
     (subseq filtered start end)))
 
 (defmethod render ((sel select) backend)
-  (let* ((ln (select-layout-node sel)) (x 0) (y 0)
+  (let* ((ln (select-layout-node sel))
+         (x (if ln (layout-node-x ln) 0))
+         (y (if ln (layout-node-y ln) 0))
          (w (if ln (layout-node-width ln) 80))
          (visible (select-visible-options sel)) (sel-idx (select-selected-index sel)))
     (dolist (item visible)

org/text-input.org

@@ -603,9 +603,9 @@ debugging argument mismatches — avoid that trap.
          (cursor (text-input-cursor in))
          (display (if (plusp (length value))
                       value
-                      (or (text-input-placeholder in) ""))))
-    (declare (ignore w cursor))
-    (draw-text backend x y display nil nil)))
+                      (or (text-input-placeholder in) "")))
+         (truncated (subseq display 0 (min (length display) w))))
+    (draw-text backend x y truncated nil nil)))
 #+END_SRC
 
 
@@ -861,7 +861,6 @@ debugging argument mismatches — avoid that trap.
          (h (if ln (layout-node-height ln) 24))
          (lines (textarea-lines ta))
          (max-lines (min (length lines) h)))
-    (declare (ignore w))
     (loop for i from 0 below max-lines
           for line in lines
           do (draw-text backend x (+ y i)