diff --git a/agent/anthropic_adapter.py b/agent/anthropic_adapter.py
index e3ae8c7ab4..6baa9f341e 100644
--- a/agent/anthropic_adapter.py
+++ b/agent/anthropic_adapter.py
@@ -523,9 +523,6 @@ def _read_claude_code_credentials_from_keychain() -> Optional[Dict[str, Any]]:
 
     Returns dict with {accessToken, refreshToken?, expiresAt?} or None.
     """
-    import platform
-    import subprocess
-
     if platform.system() != "Darwin":
         return None
 
diff --git a/agent/credential_pool.py b/agent/credential_pool.py
index 98534e902c..d11b0186e4 100644
--- a/agent/credential_pool.py
+++ b/agent/credential_pool.py
@@ -7,7 +7,6 @@ import random
 import threading
 import time
 import uuid
-import os
 import re
 from dataclasses import dataclass, fields, replace
 from datetime import datetime
diff --git a/agent/credential_sources.py b/agent/credential_sources.py
index 8ad2fade0b..dce6293526 100644
--- a/agent/credential_sources.py
+++ b/agent/credential_sources.py
@@ -47,7 +47,6 @@ from __future__ import annotations
 
 import os
 from dataclasses import dataclass, field
-from pathlib import Path
 from typing import Callable, List, Optional
 
 
diff --git a/agent/gemini_cloudcode_adapter.py b/agent/gemini_cloudcode_adapter.py
index 24866c3a53..64c51cf9d8 100644
--- a/agent/gemini_cloudcode_adapter.py
+++ b/agent/gemini_cloudcode_adapter.py
@@ -30,7 +30,6 @@ from __future__ import annotations
 
 import json
 import logging
-import os
 import time
 import uuid
 from types import SimpleNamespace
@@ -42,7 +41,6 @@ from agent import google_oauth
 from agent.gemini_schema import sanitize_gemini_tool_parameters
 from agent.google_code_assist import (
     CODE_ASSIST_ENDPOINT,
-    FREE_TIER_ID,
     CodeAssistError,
     ProjectContext,
     resolve_project_context,
diff --git a/agent/gemini_schema.py b/agent/gemini_schema.py
index 3608837a18..7d5385063e 100644
--- a/agent/gemini_schema.py
+++ b/agent/gemini_schema.py
@@ -2,7 +2,7 @@
 
 from __future__ import annotations
 
-from typing import Any, Dict, List
+from typing import Any, Dict
 
 # Gemini's ``FunctionDeclaration.parameters`` field accepts the ``Schema``
 # object, which is only a subset of OpenAPI 3.0 / JSON Schema.  Strip fields
diff --git a/agent/google_code_assist.py b/agent/google_code_assist.py
index eba09b8f46..3e61d1b03e 100644
--- a/agent/google_code_assist.py
+++ b/agent/google_code_assist.py
@@ -29,7 +29,6 @@ from __future__ import annotations
 
 import json
 import logging
-import os
 import time
 import urllib.error
 import urllib.parse
diff --git a/agent/google_oauth.py b/agent/google_oauth.py
index 231e7e1292..d6b96da6e5 100644
--- a/agent/google_oauth.py
+++ b/agent/google_oauth.py
@@ -49,14 +49,13 @@ import json
 import logging
 import os
 import secrets
-import socket
 import stat
 import threading
 import time
 import urllib.error
 import urllib.parse
 import urllib.request
-from dataclasses import dataclass, field
+from dataclasses import dataclass
 from pathlib import Path
 from typing import Any, Dict, Optional, Tuple
 
diff --git a/agent/memory_manager.py b/agent/memory_manager.py
index a76cee4b5f..2831eb7bf8 100644
--- a/agent/memory_manager.py
+++ b/agent/memory_manager.py
@@ -28,7 +28,6 @@ Usage in run_agent.py:
 
 from __future__ import annotations
 
-import json
 import logging
 import re
 import inspect
diff --git a/agent/transports/codex.py b/agent/transports/codex.py
index 783582d57b..7d6bed46de 100644
--- a/agent/transports/codex.py
+++ b/agent/transports/codex.py
@@ -8,7 +8,7 @@ streaming, or the _run_codex_stream() call path.
 from typing import Any, Dict, List, Optional
 
 from agent.transports.base import ProviderTransport
-from agent.transports.types import NormalizedResponse, ToolCall, Usage
+from agent.transports.types import NormalizedResponse, ToolCall
 
 
 class ResponsesApiTransport(ProviderTransport):
@@ -151,8 +151,6 @@ class ResponsesApiTransport(ProviderTransport):
         """Normalize Codex Responses API response to NormalizedResponse."""
         from agent.codex_responses_adapter import (
             _normalize_codex_response,
-            _extract_responses_message_text,
-            _extract_responses_reasoning_text,
         )
 
         # _normalize_codex_response returns (SimpleNamespace, finish_reason_str)
diff --git a/gateway/platforms/discord.py b/gateway/platforms/discord.py
index e0b2a64c67..903624a166 100644
--- a/gateway/platforms/discord.py
+++ b/gateway/platforms/discord.py
@@ -305,7 +305,7 @@ class VoiceReceiver:
         encrypted = bytes(payload_with_nonce[:-4])
 
         try:
-            import nacl.secret  # noqa: delayed import – only in voice path
+            import nacl.secret  # noqa: E402 — delayed import, only in voice path
             box = nacl.secret.Aead(self._secret_key)
             decrypted = box.decrypt(encrypted, header, bytes(nonce))
         except Exception as e:
diff --git a/gateway/platforms/feishu_comment.py b/gateway/platforms/feishu_comment.py
index 46807630ce..08cd35185c 100644
--- a/gateway/platforms/feishu_comment.py
+++ b/gateway/platforms/feishu_comment.py
@@ -974,7 +974,6 @@ def build_whole_comment_prompt(
 
 def _resolve_model_and_runtime() -> Tuple[str, dict]:
     """Resolve model and provider credentials, same as gateway message handling."""
-    import os
     from gateway.run import _load_gateway_config, _resolve_gateway_model
 
     user_config = _load_gateway_config()
diff --git a/gateway/platforms/helpers.py b/gateway/platforms/helpers.py
index 17bc490174..64aead4b84 100644
--- a/gateway/platforms/helpers.py
+++ b/gateway/platforms/helpers.py
@@ -11,10 +11,10 @@ import logging
 import re
 import time
 from pathlib import Path
-from typing import TYPE_CHECKING, Dict, Optional
+from typing import TYPE_CHECKING, Dict
 
 if TYPE_CHECKING:
-    from gateway.platforms.base import BasePlatformAdapter, MessageEvent
+    from gateway.platforms.base import MessageEvent
 
 logger = logging.getLogger(__name__)
 
diff --git a/gateway/platforms/mattermost.py b/gateway/platforms/mattermost.py
index 0e6c9631d7..0fc72ca013 100644
--- a/gateway/platforms/mattermost.py
+++ b/gateway/platforms/mattermost.py
@@ -412,7 +412,6 @@ class MattermostAdapter(BasePlatformAdapter):
 
         import aiohttp
 
-        last_exc = None
         file_data = None
         ct = "application/octet-stream"
         fname = url.rsplit("/", 1)[-1].split("?")[0] or f"{kind}.png"
diff --git a/gateway/platforms/qqbot/adapter.py b/gateway/platforms/qqbot/adapter.py
index 9328464584..28a297944d 100644
--- a/gateway/platforms/qqbot/adapter.py
+++ b/gateway/platforms/qqbot/adapter.py
@@ -1957,7 +1957,7 @@ class QQAdapter(BasePlatformAdapter):
             self, openid: str, content: str, reply_to: Optional[str] = None
     ) -> SendResult:
         """Send text to a C2C user via REST API."""
-        msg_seq = self._next_msg_seq(reply_to or openid)
+        self._next_msg_seq(reply_to or openid)
         body = self._build_text_body(content, reply_to)
         if reply_to:
             body["msg_id"] = reply_to
@@ -1970,7 +1970,7 @@ class QQAdapter(BasePlatformAdapter):
             self, group_openid: str, content: str, reply_to: Optional[str] = None
     ) -> SendResult:
         """Send text to a group via REST API."""
-        msg_seq = self._next_msg_seq(reply_to or group_openid)
+        self._next_msg_seq(reply_to or group_openid)
         body = self._build_text_body(content, reply_to)
         if reply_to:
             body["msg_id"] = reply_to
@@ -2135,11 +2135,6 @@ class QQAdapter(BasePlatformAdapter):
 
             # Route
             chat_type = self._guess_chat_type(chat_id)
-            target_path = (
-                f"/v2/users/{chat_id}/files"
-                if chat_type == "c2c"
-                else f"/v2/groups/{chat_id}/files"
-            )
 
             if chat_type == "guild":
                 # Guild channels don't support native media upload in the same way
diff --git a/gateway/platforms/yuanbao.py b/gateway/platforms/yuanbao.py
index 49df1b6c4a..83cd669565 100644
--- a/gateway/platforms/yuanbao.py
+++ b/gateway/platforms/yuanbao.py
@@ -90,7 +90,7 @@ from gateway.platforms.yuanbao_proto import (
     encode_get_group_member_list,
     next_seq_no,
 )
-from gateway.session import SessionSource, build_session_key
+from gateway.session import build_session_key
 
 logger = logging.getLogger(__name__)
 
@@ -1897,7 +1897,7 @@ class OwnerCommandMiddleware(InboundMiddleware):
             return None, None, False
 
         # Sender identity check: bot owner <-> push.from_account == push.bot_owner_id
-        owner_id = (push or {}).get("bot_owner_id") or ""
+        # owner_id = (push or {}).get("bot_owner_id") or ""
         # is_owner = bool(owner_id) and owner_id == from_account
         is_owner = True
         return cmd, cmd_line, is_owner
diff --git a/gateway/platforms/yuanbao_media.py b/gateway/platforms/yuanbao_media.py
index 8d697a3a8c..39f8d88d8a 100644
--- a/gateway/platforms/yuanbao_media.py
+++ b/gateway/platforms/yuanbao_media.py
@@ -21,12 +21,10 @@ import hashlib
 import hmac
 import logging
 import os
-import re
 import secrets
 import struct
 import time
 import urllib.parse
-from datetime import datetime, timezone, timedelta
 from typing import Optional, Any
 
 import httpx
diff --git a/gateway/platforms/yuanbao_proto.py b/gateway/platforms/yuanbao_proto.py
index 3d4e56ce49..99af40aa18 100644
--- a/gateway/platforms/yuanbao_proto.py
+++ b/gateway/platforms/yuanbao_proto.py
@@ -19,9 +19,8 @@ yuanbao_proto.py - Yuanbao WebSocket 协议编解码（纯 Python 实现）
 from __future__ import annotations
 
 import logging
-import struct
 import threading
-from typing import Optional, Union
+from typing import Optional
 
 logger = logging.getLogger(__name__)
 
diff --git a/gateway/run.py b/gateway/run.py
index bd9a552a1d..aa2ac75e84 100644
--- a/gateway/run.py
+++ b/gateway/run.py
@@ -7486,7 +7486,6 @@ class GatewayRunner:
                 for m in history
                 if m.get("role") in ("user", "assistant") and m.get("content")
             ]
-            original_count = len(msgs)
             approx_tokens = estimate_messages_tokens_rough(msgs)
 
             tmp_agent = AIAgent(
diff --git a/gateway/session.py b/gateway/session.py
index 0cd7fbca1f..6f35b95865 100644
--- a/gateway/session.py
+++ b/gateway/session.py
@@ -62,7 +62,6 @@ from .config import (
 )
 from .whatsapp_identity import (
     canonical_whatsapp_identifier,
-    normalize_whatsapp_identifier,
 )
 from utils import atomic_replace
 
diff --git a/hermes_cli/azure_detect.py b/hermes_cli/azure_detect.py
index 4ed4c1d0b7..8dd0d632a9 100644
--- a/hermes_cli/azure_detect.py
+++ b/hermes_cli/azure_detect.py
@@ -34,7 +34,7 @@ from dataclasses import dataclass, field
 from typing import Optional
 from urllib import request as urllib_request
 from urllib.error import HTTPError, URLError
-from urllib.parse import urlparse, urlunparse
+from urllib.parse import urlparse
 
 logger = logging.getLogger(__name__)
 
diff --git a/hermes_cli/banner.py b/hermes_cli/banner.py
index 0f792592f9..d46c853997 100644
--- a/hermes_cli/banner.py
+++ b/hermes_cli/banner.py
@@ -562,7 +562,6 @@ def build_welcome_banner(console: Console, model: str, cwd: str,
     right_content = "\n".join(right_lines)
     layout_table.add_row(left_content, right_content)
 
-    agent_name = _skin_branding("agent_name", "Hermes Agent")
     title_color = _skin_color("banner_title", "#FFD700")
     border_color = _skin_color("banner_border", "#CD7F32")
     version_label = format_banner_version_label()
diff --git a/hermes_cli/debug.py b/hermes_cli/debug.py
index 71c5443516..06be05a355 100644
--- a/hermes_cli/debug.py
+++ b/hermes_cli/debug.py
@@ -7,7 +7,6 @@ Currently supports:
 
 import io
 import json
-import os
 import sys
 import time
 import urllib.error
diff --git a/hermes_cli/dingtalk_auth.py b/hermes_cli/dingtalk_auth.py
index e1034c53da..798ce46fcb 100644
--- a/hermes_cli/dingtalk_auth.py
+++ b/hermes_cli/dingtalk_auth.py
@@ -13,7 +13,6 @@ automatically.
 
 from __future__ import annotations
 
-import io
 import os
 import sys
 import time
diff --git a/hermes_cli/gateway.py b/hermes_cli/gateway.py
index aede480bfe..a3896b5bbd 100644
--- a/hermes_cli/gateway.py
+++ b/hermes_cli/gateway.py
@@ -2953,7 +2953,7 @@ def _setup_sms():
 def _setup_dingtalk():
     """Configure DingTalk — QR scan (recommended) or manual credential entry."""
     from hermes_cli.setup import (
-        prompt_choice, prompt_yes_no, print_info, print_success, print_warning,
+        prompt_choice, prompt_yes_no, print_success, print_warning,
     )
 
     dingtalk_platform = next(p for p in _PLATFORMS if p["key"] == "dingtalk")
@@ -3504,7 +3504,6 @@ def _setup_qqbot():
     method_idx = prompt_choice("  How would you like to set up QQ Bot?", method_choices, 0)
 
     credentials = None
-    used_qr = False
 
     if method_idx == 0:
         # ── QR scan-to-configure ──
@@ -3515,8 +3514,6 @@ def _setup_qqbot():
             print()
             print_warning("  QQ Bot setup cancelled.")
             return
-        if credentials:
-            used_qr = True
         if not credentials:
             print_info("  QR setup did not complete. Continuing with manual input.")
 
diff --git a/hermes_cli/hooks.py b/hermes_cli/hooks.py
index c39a692e63..de624f2461 100644
--- a/hermes_cli/hooks.py
+++ b/hermes_cli/hooks.py
@@ -19,9 +19,8 @@ format) lives there.
 from __future__ import annotations
 
 import json
-import os
 from pathlib import Path
-from typing import Any, Dict, List, Optional
+from typing import Any, Dict, List
 
 
 def hooks_command(args) -> None:
diff --git a/hermes_cli/main.py b/hermes_cli/main.py
index 2e2a2f8f4d..2ec8e44481 100644
--- a/hermes_cli/main.py
+++ b/hermes_cli/main.py
@@ -4732,7 +4732,6 @@ def _model_flow_anthropic(config, current_model=""):
             read_claude_code_credentials,
             is_claude_code_token_valid,
             _is_oauth_token,
-            _resolve_claude_code_token_from_credentials,
         )
 
         cc_creds = read_claude_code_credentials()
@@ -7137,7 +7136,7 @@ def _cmd_update_impl(args, gateway_mode: bool):
                                     print(
                                         f"  ⚠ {svc_name} died after restart, retrying..."
                                     )
-                                    retry = subprocess.run(
+                                    subprocess.run(
                                         scope_cmd + ["restart", svc_name],
                                         capture_output=True,
                                         text=True,
diff --git a/hermes_cli/model_catalog.py b/hermes_cli/model_catalog.py
index 51873adf14..6ec7c4ec51 100644
--- a/hermes_cli/model_catalog.py
+++ b/hermes_cli/model_catalog.py
@@ -46,7 +46,6 @@ from __future__ import annotations
 
 import json
 import logging
-import os
 import time
 import urllib.error
 import urllib.request
diff --git a/hermes_cli/plugins_cmd.py b/hermes_cli/plugins_cmd.py
index 230e134207..349a11de11 100644
--- a/hermes_cli/plugins_cmd.py
+++ b/hermes_cli/plugins_cmd.py
@@ -999,7 +999,6 @@ def _run_composite_ui(curses, plugin_names, plugin_labels, plugin_selected,
             # We need to map logical cursor positions to screen rows
             # accounting for non-navigable separator/headers
 
-            draw_row = 0  # tracks navigable item index
 
             # --- General Plugins section ---
             if n_plugins > 0:
diff --git a/hermes_cli/setup.py b/hermes_cli/setup.py
index 92d7c37cf6..011b4575e4 100644
--- a/hermes_cli/setup.py
+++ b/hermes_cli/setup.py
@@ -712,8 +712,6 @@ def setup_model_provider(config: dict, *, quick: bool = False):
     if isinstance(_m, dict):
         selected_provider = _m.get("provider")
 
-    nous_subscription_selected = selected_provider == "nous"
-
     # ── Same-provider fallback & rotation setup (full setup only) ──
     if not quick and _supports_same_provider_pool_setup(selected_provider):
         try:
diff --git a/hermes_cli/status.py b/hermes_cli/status.py
index 0285752681..b4a6101885 100644
--- a/hermes_cli/status.py
+++ b/hermes_cli/status.py
@@ -6,7 +6,7 @@ Shows the status of all Hermes Agent components.
 
 import os
 import sys
-import subprocess
+import subprocess  # noqa: F401 — re-exported for tests that monkeypatch status.subprocess to guard against regressions
 from pathlib import Path
 
 PROJECT_ROOT = Path(__file__).parent.parent.resolve()
diff --git a/hermes_cli/web_server.py b/hermes_cli/web_server.py
index 13337a7342..b91edc16d1 100644
--- a/hermes_cli/web_server.py
+++ b/hermes_cli/web_server.py
@@ -736,7 +736,7 @@ async def get_sessions(limit: int = 20, offset: int = 0):
             return {"sessions": sessions, "total": total, "limit": limit, "offset": offset}
         finally:
             db.close()
-    except Exception as e:
+    except Exception:
         _log.exception("GET /api/sessions failed")
         raise HTTPException(status_code=500, detail="Internal server error")
 
@@ -968,7 +968,7 @@ async def update_config(body: ConfigUpdate):
     try:
         save_config(_denormalize_config_from_web(body.config))
         return {"ok": True}
-    except Exception as e:
+    except Exception:
         _log.exception("PUT /api/config failed")
         raise HTTPException(status_code=500, detail="Internal server error")
 
@@ -997,7 +997,7 @@ async def set_env_var(body: EnvVarUpdate):
     try:
         save_env_value(body.key, body.value)
         return {"ok": True, "key": body.key}
-    except Exception as e:
+    except Exception:
         _log.exception("PUT /api/env failed")
         raise HTTPException(status_code=500, detail="Internal server error")
 
@@ -1011,7 +1011,7 @@ async def remove_env_var(body: EnvVarDelete):
         return {"ok": True, "key": body.key}
     except HTTPException:
         raise
-    except Exception as e:
+    except Exception:
         _log.exception("DELETE /api/env failed")
         raise HTTPException(status_code=500, detail="Internal server error")
 
@@ -1568,7 +1568,6 @@ async def _start_device_code_flow(provider_id: str) -> Dict[str, Any]:
     then spawns a background poller. Returns the user-facing display fields
     so the UI can render the verification page link + user code.
     """
-    from hermes_cli import auth as hauth
     if provider_id == "nous":
         from hermes_cli.auth import _request_device_code, PROVIDER_REGISTRY
         import httpx
diff --git a/hermes_cli/webhook.py b/hermes_cli/webhook.py
index 116464dde6..0ec4c6784b 100644
--- a/hermes_cli/webhook.py
+++ b/hermes_cli/webhook.py
@@ -11,7 +11,6 @@ hot-reloaded by the webhook adapter without a gateway restart.
 """
 
 import json
-import os
 import re
 import secrets
 import time
diff --git a/rl_cli.py b/rl_cli.py
index 03bf015c26..8054b627e9 100644
--- a/rl_cli.py
+++ b/rl_cli.py
@@ -27,6 +27,8 @@ from pathlib import Path
 import fire
 import yaml
 
+from hermes_constants import OPENROUTER_BASE_URL, get_hermes_home
+
 # Load .env from ~/.hermes/.env first, then project root as dev fallback.
 # User-managed env files should override stale shell exports on restart.
 _hermes_home = get_hermes_home()
@@ -60,8 +62,6 @@ from tools.rl_training_tool import get_missing_keys
 # Config Loading
 # ============================================================================
 
-from hermes_constants import get_hermes_home, OPENROUTER_BASE_URL
-
 DEFAULT_MODEL = "anthropic/claude-opus-4.5"
 DEFAULT_BASE_URL = OPENROUTER_BASE_URL
 
@@ -412,7 +412,7 @@ def main(
                 
                 # Run the agent
                 print("\n" + "=" * 60)
-                response = agent.run_conversation(user_input)
+                agent.run_conversation(user_input)
                 print("\n" + "=" * 60)
                 
             except KeyboardInterrupt:
@@ -429,7 +429,7 @@ def main(
         print("-" * 40)
         
         try:
-            response = agent.run_conversation(task)
+            agent.run_conversation(task)
             print("\n" + "=" * 60)
             print("✅ Task completed")
         except KeyboardInterrupt:
diff --git a/run_agent.py b/run_agent.py
index 9156b39a6b..cc9df8e485 100644
--- a/run_agent.py
+++ b/run_agent.py
@@ -2720,7 +2720,6 @@ class AIAgent:
         eff_api_mode = api_mode if api_mode is not None else (self.api_mode or "")
         eff_model = (model if model is not None else self.model) or ""
 
-        base_lower = eff_base_url.lower()
         model_lower = eff_model.lower()
         provider_lower = eff_provider.lower()
         is_claude = "claude" in model_lower
diff --git a/tools/browser_cdp_tool.py b/tools/browser_cdp_tool.py
index f9099cbc89..d43d200b4a 100644
--- a/tools/browser_cdp_tool.py
+++ b/tools/browser_cdp_tool.py
@@ -20,7 +20,6 @@ from __future__ import annotations
 import asyncio
 import json
 import logging
-import os
 from typing import Any, Dict, Optional
 
 from tools.registry import registry, tool_error
diff --git a/tools/browser_supervisor.py b/tools/browser_supervisor.py
index e230d92eda..91d7e78621 100644
--- a/tools/browser_supervisor.py
+++ b/tools/browser_supervisor.py
@@ -25,7 +25,7 @@ import json
 import logging
 import threading
 import time
-from dataclasses import dataclass, field
+from dataclasses import dataclass
 from typing import Any, Dict, List, Optional, Tuple
 
 import websockets
diff --git a/tools/browser_tool.py b/tools/browser_tool.py
index 87ed56b270..39cdaf78d9 100644
--- a/tools/browser_tool.py
+++ b/tools/browser_tool.py
@@ -526,7 +526,6 @@ def _url_is_private(url: str) -> bool:
     backend is configured, which will surface the DNS error naturally).
     """
     try:
-        from tools.url_safety import is_safe_url
         # is_safe_url returns False for private/loopback/link-local/CGNAT AND
         # for DNS failures.  We only want the private-network case here, so
         # we parse + check the host shape as a DNS-failure sieve first.
diff --git a/tools/delegate_tool.py b/tools/delegate_tool.py
index 3fe0026efe..7d2bb197e0 100644
--- a/tools/delegate_tool.py
+++ b/tools/delegate_tool.py
@@ -27,7 +27,6 @@ import time
 from concurrent.futures import (
     ThreadPoolExecutor,
     TimeoutError as FuturesTimeoutError,
-    as_completed,
 )
 from typing import Any, Dict, List, Optional
 
diff --git a/tools/file_operations.py b/tools/file_operations.py
index 9e0b44c145..aa7a482509 100644
--- a/tools/file_operations.py
+++ b/tools/file_operations.py
@@ -32,7 +32,6 @@ from abc import ABC, abstractmethod
 from dataclasses import dataclass, field
 from typing import Optional, List, Dict, Any
 from pathlib import Path
-from hermes_constants import get_hermes_home
 from tools.binary_extensions import BINARY_EXTENSIONS
 
 from agent.file_safety import (
diff --git a/tools/file_tools.py b/tools/file_tools.py
index 38801362e9..7d81cd8f8e 100644
--- a/tools/file_tools.py
+++ b/tools/file_tools.py
@@ -7,7 +7,6 @@ import logging
 import os
 import threading
 from pathlib import Path
-from typing import Optional
 
 from agent.file_safety import get_read_block_error
 from tools.binary_extensions import has_binary_extension
diff --git a/tools/transcription_tools.py b/tools/transcription_tools.py
index 9e8ad69271..bbc9a10e6a 100644
--- a/tools/transcription_tools.py
+++ b/tools/transcription_tools.py
@@ -836,7 +836,6 @@ def transcribe_audio(file_path: str, model: Optional[str] = None) -> Dict[str, A
         return _transcribe_mistral(file_path, model_name)
 
     if provider == "xai":
-        xai_cfg = stt_config.get("xai", {})
         # xAI Grok STT doesn't use a model parameter — pass through for logging
         model_name = model or "grok-stt"
         return _transcribe_xai(file_path, model_name)
diff --git a/tools/yuanbao_tools.py b/tools/yuanbao_tools.py
index bdb36c8b85..e12307b85e 100644
--- a/tools/yuanbao_tools.py
+++ b/tools/yuanbao_tools.py
@@ -20,7 +20,7 @@ from __future__ import annotations
 
 import logging
 from pathlib import Path
-from typing import TYPE_CHECKING, List, Optional, Tuple
+from typing import List, Optional, Tuple
 
 logger = logging.getLogger(__name__)
 
@@ -34,10 +34,6 @@ def _get_active_adapter():
         return None
 
 
-if TYPE_CHECKING:
-    from gateway.platforms.yuanbao import YuanbaoAdapter
-
-
 # ---------------------------------------------------------------------------
 # 角色标签
 # ---------------------------------------------------------------------------
@@ -418,7 +414,7 @@ async def send_dm(
 # Registry registration
 # ---------------------------------------------------------------------------
 
-from tools.registry import registry, tool_result, tool_error  # noqa: E402
+from tools.registry import registry, tool_result  # noqa: E402
 
 
 def _check_yuanbao():
diff --git a/trajectory_compressor.py b/trajectory_compressor.py
index ff2dcc6266..2efdeaf165 100644
--- a/trajectory_compressor.py
+++ b/trajectory_compressor.py
@@ -37,7 +37,7 @@ import yaml
 import logging
 import asyncio
 from pathlib import Path
-from typing import List, Dict, Any, Optional, Tuple, Callable
+from typing import List, Dict, Any, Optional, Tuple
 from dataclasses import dataclass, field
 from datetime import datetime