refactor: replace try-except blocks with contextlib.suppress for cleaner error handling across multiple files

nanobot/cli/commands.py

@@ -5,7 +5,7 @@ import os
 import select
 import signal
 import sys
-from contextlib import nullcontext
+from contextlib import nullcontext, suppress
 from pathlib import Path
 from typing import Any
 
@@ -14,11 +14,9 @@ if sys.platform == "win32":
     if sys.stdout.encoding != "utf-8":
         os.environ["PYTHONIOENCODING"] = "utf-8"
         # Re-open stdout/stderr with UTF-8 encoding
-        try:
+        with suppress(Exception):
             sys.stdout.reconfigure(encoding="utf-8", errors="replace")
             sys.stderr.reconfigure(encoding="utf-8", errors="replace")
-        except Exception:
-            pass
 
 import typer
 from loguru import logger
@@ -83,35 +81,29 @@ def _flush_pending_tty_input() -> None:
     except Exception:
         return
 
-    try:
+    with suppress(Exception):
         import termios
 
         termios.tcflush(fd, termios.TCIFLUSH)
         return
-    except Exception:
-        pass
 
-    try:
+    with suppress(Exception):
         while True:
             ready, _, _ = select.select([fd], [], [], 0)
             if not ready:
                 break
             if not os.read(fd, 4096):
                 break
-    except Exception:
-        return
 
 
 def _restore_terminal() -> None:
     """Restore terminal to its original state (echo, line buffering, etc.)."""
     if _SAVED_TERM_ATTRS is None:
         return
-    try:
+    with suppress(Exception):
         import termios
 
         termios.tcsetattr(sys.stdin.fileno(), termios.TCSADRAIN, _SAVED_TERM_ATTRS)
-    except Exception:
-        pass
 
 
 def _init_prompt_session() -> None:
@@ -119,12 +111,10 @@ def _init_prompt_session() -> None:
     global _PROMPT_SESSION, _SAVED_TERM_ATTRS
 
     # Save terminal state so we can restore it on exit
-    try:
+    with suppress(Exception):
         import termios
 
         _SAVED_TERM_ATTRS = termios.tcgetattr(sys.stdin.fileno())
-    except Exception:
-        pass
 
     from nanobot.config.paths import get_cli_history_path
 
@@ -936,10 +926,8 @@ def _run_gateway(
                     config.gateway.host or "127.0.0.1", port
                 )
                 writer.close()
-                try:
+                with suppress(Exception):
                     await writer.wait_closed()
-                except Exception:
-                    pass
                 break
             except OSError:
                 await asyncio.sleep(0.1)
@@ -1520,10 +1508,8 @@ def _login_openai_codex() -> None:
         from oauth_cli_kit import get_token, login_oauth_interactive
 
         token = None
-        try:
+        with suppress(Exception):
             token = get_token()
-        except Exception:
-            pass
         if not (token and token.access):
             console.print("[cyan]Starting interactive OAuth login...[/cyan]\n")
             token = login_oauth_interactive(