feat: enhance input area height adjustment in CLI

- Implemented dynamic height adjustment for the input area in HermesCLI to accommodate varying content lines, ensuring that newlines (Alt+Enter) remain visible.
- This change improves usability by preventing internal scrolling of the input area when displaying output from the agent.

cli.py

@@ -1632,6 +1632,19 @@ class HermesCLI:
             complete_while_typing=True,
         )
 
+        # Dynamic height: grow the input area to match content lines so
+        # newlines (Alt+Enter) are always visible.  A static preferred=1
+        # causes the widget to stay 1-line and scroll internally after
+        # patch_stdout output has filled the terminal.
+        def _input_height():
+            try:
+                lines = input_area.buffer.document.line_count
+                return Dimension(min=1, max=8, preferred=max(lines, 1))
+            except Exception:
+                return Dimension(min=1, max=8, preferred=1)
+
+        input_area.window.height = _input_height
+
         # Paste collapsing: detect large pastes and save to temp file
         _paste_counter = [0]