feat: resize the viewport on resize

Author: ellie

src/app.rs

@@ -580,9 +580,11 @@ impl App {
                     self.input.set_content(&completed);
                 }
             },
-            Action::Resize(_w, _h) => {
-                // TODO trigger redraw with new dimensions
-                return ActionResult::NoOp;
+            Action::Resize(w, _h) => {
+                // Update chat view width for text wrapping
+                self.chat.set_width(w);
+                // Re-render and draw with new dimensions
+                self.chat.render(&mut self.terminal);
             },
         }
 

src/ui/chat.rs

@@ -113,6 +113,11 @@ impl ChatView {
         self.transcript.add_turn(role, block)
     }
 
+    /// Update the terminal width (e.g., on resize)
+    pub fn set_width(&mut self, width: u16) {
+        self.width = width;
+    }
+
     /// Replace the transcript and reset view state (used after compaction rotation)
     /// Renders the new transcript fully to scrollback
     pub fn reset_transcript(