diff --git a/gns3server/agent/gns3_copilot/agent/context_manager.py b/gns3server/agent/gns3_copilot/agent/context_manager.py
index 5337c3d95..419e7785c 100644
--- a/gns3server/agent/gns3_copilot/agent/context_manager.py
+++ b/gns3server/agent/gns3_copilot/agent/context_manager.py
@@ -391,10 +391,10 @@ def create_pre_model_hook(
         max_tokens_for_trim = max_input_tokens - tool_tokens
 
         # Validate budget and provide actionable warnings
-        if system_tokens + tool_tokens > max_input_tokens:  # noqa: E501
+        if system_tokens + tool_tokens > max_input_tokens:
             logger.error(
                 "System prompt (%d tokens) + tools (%d tokens) EXCEED input "
-                "budget (%d tokens). This will likely cause LLM call failures. "  # noqa: E501
+                "budget (%d tokens). This will likely cause LLM call failures. "
                 "Recommendations: 1) Reduce system prompt length, 2) Reduce "
                 "number of tools, 3) Use a model with larger context window, "
                 "or 4) Switch to 'conservative' strategy.",
diff --git a/gns3server/agent/gns3_copilot/tools_v2/config_tools_nornir.py b/gns3server/agent/gns3_copilot/tools_v2/config_tools_nornir.py
index ed15f0589..6b96e6202 100644
--- a/gns3server/agent/gns3_copilot/tools_v2/config_tools_nornir.py
+++ b/gns3server/agent/gns3_copilot/tools_v2/config_tools_nornir.py
@@ -57,7 +57,7 @@ from gns3server.agent.gns3_copilot.utils.command_filter import (
 # Import custom Netmiko device types for GNS3 emulation
 # This registers gns3_huawei_telnet_ce and other custom device types
 # NOTE: Must be imported BEFORE any Nornir operations to ensure device types are registered
-from gns3server.agent.gns3_copilot.utils import custom_netmiko  # noqa: F401
+from gns3server.agent.gns3_copilot.utils import custom_netmiko
 
 # Explicitly register custom device types to ensure they are available
 # This is a safety measure in case the auto-registration on import doesn't work
diff --git a/gns3server/agent/gns3_copilot/tools_v2/display_tools_nornir.py b/gns3server/agent/gns3_copilot/tools_v2/display_tools_nornir.py
index a8eb41bc4..206ca10ea 100644
--- a/gns3server/agent/gns3_copilot/tools_v2/display_tools_nornir.py
+++ b/gns3server/agent/gns3_copilot/tools_v2/display_tools_nornir.py
@@ -57,7 +57,7 @@ from gns3server.agent.gns3_copilot.utils.command_filter import (
 # Import custom Netmiko device types for GNS3 emulation
 # This registers gns3_huawei_telnet_ce and other custom device types
 # NOTE: Must be imported BEFORE any Nornir operations to ensure device types are registered
-from gns3server.agent.gns3_copilot.utils import custom_netmiko  # noqa: F401
+from gns3server.agent.gns3_copilot.utils import custom_netmiko
 
 # Explicitly register custom device types to ensure they are available
 # This is a safety measure in case the auto-registration on import doesn't work
diff --git a/gns3server/agent/gns3_copilot/tools_v2/vpcs_tools_netmiko.py b/gns3server/agent/gns3_copilot/tools_v2/vpcs_tools_netmiko.py
index 1315730c7..d9186d2d4 100644
--- a/gns3server/agent/gns3_copilot/tools_v2/vpcs_tools_netmiko.py
+++ b/gns3server/agent/gns3_copilot/tools_v2/vpcs_tools_netmiko.py
@@ -54,7 +54,7 @@ from gns3server.agent.gns3_copilot.utils import get_device_ports_from_topology
 # Import custom Netmiko device types for GNS3 emulation
 # This registers gns3_vpcs_telnet and other custom device types
 # NOTE: Must be imported BEFORE any Nornir operations to ensure device types are registered
-from gns3server.agent.gns3_copilot.utils import custom_netmiko  # noqa: F401
+from gns3server.agent.gns3_copilot.utils import custom_netmiko
 
 # Explicitly register VPCS device type to ensure it is available
 try:
diff --git a/gns3server/agent/gns3_copilot/utils/custom_netmiko/__init__.py b/gns3server/agent/gns3_copilot/utils/custom_netmiko/__init__.py
index 1aea7adf8..9cad247ca 100644
--- a/gns3server/agent/gns3_copilot/utils/custom_netmiko/__init__.py
+++ b/gns3server/agent/gns3_copilot/utils/custom_netmiko/__init__.py
@@ -61,17 +61,17 @@ logger = logging.getLogger(__name__)
 
 # Import all custom drivers (auto-registers them with Netmiko)
 try:
-    from . import huawei_ce  # noqa: F401
+    from . import huawei_ce
 except Exception as e:
     logger.warning(f"Failed to import Huawei CE driver: {e}", exc_info=True)
 
 try:
-    from .ruijie_telnet import RuijieTelnetEnhanced  # noqa: F401
+    from .ruijie_telnet import RuijieTelnetEnhanced
 except Exception as e:
     logger.warning(f"Failed to import Ruijie driver: {e}", exc_info=True)
 
 try:
-    from . import vpcs_telnet  # noqa: F401
+    from . import vpcs_telnet
 except Exception as e:
     logger.warning(f"Failed to import VPCS driver: {e}", exc_info=True)
 
diff --git a/gns3server/agent/gns3_copilot/utils/custom_netmiko/tests/test_huawei_ce.py b/gns3server/agent/gns3_copilot/utils/custom_netmiko/tests/test_huawei_ce.py
index c6b6db344..62343c3ef 100644
--- a/gns3server/agent/gns3_copilot/utils/custom_netmiko/tests/test_huawei_ce.py
+++ b/gns3server/agent/gns3_copilot/utils/custom_netmiko/tests/test_huawei_ce.py
@@ -157,7 +157,7 @@ class TestHuaweiTelnetCEIntegration(unittest.TestCase):
 
     def test_mock_telnet_connection(self):
         """Test telnet_login logic with mocked connection."""
-        from gns3server.agent.gns3_copilot.utils.custom_netmiko.huawei_ce import (  # noqa: E501
+        from gns3server.agent.gns3_copilot.utils.custom_netmiko.huawei_ce import (
             GNS3HuaweiTelnetCE,
         )
 
diff --git a/gns3server/agent/gns3_copilot/utils/custom_netmiko/tests/test_ruijie_telnet.py b/gns3server/agent/gns3_copilot/utils/custom_netmiko/tests/test_ruijie_telnet.py
index dfef81823..adfbafea2 100644
--- a/gns3server/agent/gns3_copilot/utils/custom_netmiko/tests/test_ruijie_telnet.py
+++ b/gns3server/agent/gns3_copilot/utils/custom_netmiko/tests/test_ruijie_telnet.py
@@ -178,7 +178,7 @@ class TestRuijieTelnetEnhancedIntegration(unittest.TestCase):
 
     def test_send_config_set_calls_preprocess(self):
         """Test that send_config_set calls preprocessing."""
-        from gns3server.agent.gns3_copilot.utils.custom_netmiko.ruijie_telnet import (  # noqa: E501
+        from gns3server.agent.gns3_copilot.utils.custom_netmiko.ruijie_telnet import (
             RuijieTelnetEnhanced,
         )
 
@@ -205,7 +205,7 @@ class TestRuijieTelnetEnhancedIntegration(unittest.TestCase):
 
     def test_multiple_interactive_patterns(self):
         """Test that multiple interactive commands are detected."""
-        from gns3server.agent.gns3_copilot.utils.custom_netmiko.ruijie_telnet import (  # noqa: E501
+        from gns3server.agent.gns3_copilot.utils.custom_netmiko.ruijie_telnet import (
             RuijieTelnetEnhanced,
         )
 
diff --git a/gns3server/agent/gns3_copilot/utils/custom_netmiko/tests/test_vpcs_telnet.py b/gns3server/agent/gns3_copilot/utils/custom_netmiko/tests/test_vpcs_telnet.py
index 4659465cd..f24565d85 100644
--- a/gns3server/agent/gns3_copilot/utils/custom_netmiko/tests/test_vpcs_telnet.py
+++ b/gns3server/agent/gns3_copilot/utils/custom_netmiko/tests/test_vpcs_telnet.py
@@ -116,7 +116,7 @@ class TestVPCSTelnetInit(unittest.TestCase):
     @classmethod
     def setUpClass(cls):
         """Set up test fixtures."""
-        from gns3server.agent.gns3_copilot.utils.custom_netmiko.vpcs_telnet import (  # noqa: E501
+        from gns3server.agent.gns3_copilot.utils.custom_netmiko.vpcs_telnet import (
             VPCSTelnet,
         )
 
@@ -165,7 +165,7 @@ class TestVPCSTelnetMethods(unittest.TestCase):
     @classmethod
     def setUpClass(cls):
         """Set up test fixtures."""
-        from gns3server.agent.gns3_copilot.utils.custom_netmiko.vpcs_telnet import (  # noqa: E501
+        from gns3server.agent.gns3_copilot.utils.custom_netmiko.vpcs_telnet import (
             VPCSTelnet,
         )
 
@@ -208,7 +208,7 @@ class TestVPCSTelnetSendCommand(unittest.TestCase):
     @classmethod
     def setUpClass(cls):
         """Set up test fixtures."""
-        from gns3server.agent.gns3_copilot.utils.custom_netmiko.vpcs_telnet import (  # noqa: E501
+        from gns3server.agent.gns3_copilot.utils.custom_netmiko.vpcs_telnet import (
             VPCSTelnet,
         )
 
@@ -273,7 +273,7 @@ class TestVPCSTelnetTelnetLogin(unittest.TestCase):
     @classmethod
     def setUpClass(cls):
         """Set up test fixtures."""
-        from gns3server.agent.gns3_copilot.utils.custom_netmiko.vpcs_telnet import (  # noqa: E501
+        from gns3server.agent.gns3_copilot.utils.custom_netmiko.vpcs_telnet import (
             VPCSTelnet,
         )
 
@@ -353,7 +353,7 @@ class TestVPCSTelnetAnsiStripping(unittest.TestCase):
     @classmethod
     def setUpClass(cls):
         """Set up test fixtures."""
-        from gns3server.agent.gns3_copilot.utils.custom_netmiko.vpcs_telnet import (  # noqa: E501
+        from gns3server.agent.gns3_copilot.utils.custom_netmiko.vpcs_telnet import (
             VPCSTelnet,
         )
 
diff --git a/gns3server/agent/gns3_copilot/utils/gns3_drawing_utils.py b/gns3server/agent/gns3_copilot/utils/gns3_drawing_utils.py
index a28278744..4fa48ee7d 100644
--- a/gns3server/agent/gns3_copilot/utils/gns3_drawing_utils.py
+++ b/gns3server/agent/gns3_copilot/utils/gns3_drawing_utils.py
@@ -238,7 +238,7 @@ def generate_ellipse_svg(
     svg_height: int,
 ) -> str:
     """Generate SVG for ellipse."""
-    return f"""<svg width="{svg_width}" height="{svg_height}"><ellipse cx="{rx}" cy="{ry}" rx="{rx}" ry="{ry}" fill="{color_scheme["fill"]}" fill-opacity="{color_scheme["fill_opacity"]}"/></svg>"""  # noqa: E501
+    return f"""<svg width="{svg_width}" height="{svg_height}"><ellipse cx="{rx}" cy="{ry}" rx="{rx}" ry="{ry}" fill="{color_scheme["fill"]}" fill-opacity="{color_scheme["fill_opacity"]}"/></svg>"""
 
 
 def generate_rectangle_svg(
@@ -247,7 +247,7 @@ def generate_rectangle_svg(
     color_scheme: dict[str, Any],
 ) -> str:
     """Generate SVG for rectangle."""
-    return f"""<svg width="{width}" height="{height}"><rect x="0" y="0" width="{width}" height="{height}" fill="{color_scheme["fill"]}" fill-opacity="{color_scheme["fill_opacity"]}"/></svg>"""  # noqa: E501
+    return f"""<svg width="{width}" height="{height}"><rect x="0" y="0" width="{width}" height="{height}" fill="{color_scheme["fill"]}" fill-opacity="{color_scheme["fill_opacity"]}"/></svg>"""
 
 
 def generate_text_svg(text: str, color_scheme: dict[str, Any]) -> str:
@@ -255,7 +255,7 @@ def generate_text_svg(text: str, color_scheme: dict[str, Any]) -> str:
     text_width = len(text) * 8 + 20
     text_height = DEFAULT_FONT_SIZE + 16
 
-    return f"""<svg width="{text_width}" height="{text_height}"><text font-family="TypeWriter" font-size="{DEFAULT_FONT_SIZE}.0" font-weight="bold" fill="{color_scheme["stroke"]}" text-anchor="middle" x="{text_width / 2}" y="{text_height / 2 + 4}">{text}</text></svg>"""  # noqa: E501
+    return f"""<svg width="{text_width}" height="{text_height}"><text font-family="TypeWriter" font-size="{DEFAULT_FONT_SIZE}.0" font-weight="bold" fill="{color_scheme["stroke"]}" text-anchor="middle" x="{text_width / 2}" y="{text_height / 2 + 4}">{text}</text></svg>"""
 
 
 def _hsv_to_hex(h: int, s: int, v: int) -> str:
diff --git a/gns3server/api/routes/controller/netmiko.py b/gns3server/api/routes/controller/netmiko.py
index 827ac751c..44c9c9f42 100644
--- a/gns3server/api/routes/controller/netmiko.py
+++ b/gns3server/api/routes/controller/netmiko.py
@@ -64,7 +64,7 @@ def _load_netmiko_device_types() -> schemas.NetmikoDeviceTypeList:
     # imported them yet); failures are logged by the package itself, do not
     # fail the whole endpoint.
     try:
-        from gns3server.agent.gns3_copilot.utils import custom_netmiko  # noqa: F401
+        from gns3server.agent.gns3_copilot.utils import custom_netmiko
     except Exception as e:
         log.warning(f"Could not register GNS3-copilot custom Netmiko drivers: {e}")