fix: Remove KeyboardInterrupt handler from _run_linear

Co-authored-by: cecli (openai/gemini_cli_local/gemini-2.5-pro)

Author: Your Name

cecli/coders/base_coder.py

@@ -1449,10 +1449,6 @@ async def input_task(self, preproc):
 
                 await asyncio.sleep(0.1)  # Small yield to prevent tight loop
 
-            except KeyboardInterrupt:
-                self.io.set_placeholder("")
-                self.keyboard_interrupt()
-                await self.io.stop_task_streams()
             except (SwitchCoderSignal, SystemExit):
                 raise
             except Exception as e: