feat: MAINT-001 - Fix Ruff violations across all Python source

packages/node/meshnet_node/cli.py

@@ -144,7 +144,7 @@ def _cmd_default(args) -> int:
             print("\nSetup cancelled.")
             return 1
         save_config(cfg)
-        print(f"\nConfig saved to ~/.config/meshnet/config.json\n")
+        print("\nConfig saved to ~/.config/meshnet/config.json\n")
 
     # Apply CLI overrides on top of saved config
     overrides: dict = {}
@@ -198,7 +198,7 @@ def _cmd_default(args) -> int:
 
 def _cmd_models(args) -> int:
     """List curated models (with optional HF Hub browse)."""
-    from .wizard import print_models_table, _browse_hf_interactive
+    from .wizard import print_models_table
 
     if args.browse:
         from .model_catalog import browse_hf_hub

packages/node/meshnet_node/dashboard.py

@@ -5,7 +5,6 @@ from __future__ import annotations
 import os
 import sys
 import time
-from collections import deque
 from typing import TYPE_CHECKING
 
 if TYPE_CHECKING:
@@ -114,7 +113,7 @@ def run_dashboard(node, config: dict, start_time: float) -> None:
         return
 
     try:
-        from rich.live import Live  # type: ignore[import]
+        from rich.live import Live  # type: ignore[import]  # noqa: F401
 
         _run_rich_dashboard(node, config, start_time)
     except ImportError:
@@ -126,7 +125,6 @@ def _build_rich_renderable(
 ):
     from rich.table import Table  # type: ignore[import]
     from rich.panel import Panel  # type: ignore[import]
-    from rich.columns import Columns  # type: ignore[import]
     from rich.text import Text  # type: ignore[import]
 
     uptime = time.monotonic() - start_time
@@ -178,8 +176,8 @@ def _build_rich_renderable(
         f"Tokens/sec   {tps_bar}  {tps:.1f} t/s (EMA)",
         f"Requests     {req_count:,} served",
         f"Success      {stats['success_rate']:.1f}%  failed {stats['failed_requests']:,}  queue {stats['queue_depth']}",
-        f"Peers        0 connected  (gossip: US-017)",
-        f"TAI earned   0.00 TAI  (payments: US-006)",
+        "Peers        0 connected  (gossip: US-017)",
+        "TAI earned   0.00 TAI  (payments: US-006)",
         f"Uptime       {_format_uptime(uptime)}",
         "",
         "[q] quit   [c] compact view",

packages/node/meshnet_node/server.py

@@ -105,7 +105,7 @@ class _StubHTTPServer(http.server.HTTPServer):
 
 
 class _StubHandler(http.server.BaseHTTPRequestHandler):
-    def log_message(self, fmt, *args):  # noqa: suppress request logs in tests
+    def log_message(self, fmt, *args):  # suppress request logs in tests
         pass
 
     def do_POST(self):

packages/node/meshnet_node/torch_server.py

@@ -19,7 +19,6 @@ from .model_backend import (
     InsufficientVRAMError,
     KVCacheMiss,
     MissingModelDependencyError,
-    Quantization,
     TailTokenResult,
     TorchModelShard,
     _tensor_from_bfloat16_bytes,
@@ -46,7 +45,7 @@ class _DirectRequestUncertainError(ConnectionError):
     """A direct request may have reached the downstream node but did not finish."""
 
 
-from .server import (
+from .server import (  # noqa: E402
     _WIRE_VERSION,
     _parse_shape,
     _validate_activation_body,
@@ -399,7 +398,7 @@ class _TorchHandler(http.server.BaseHTTPRequestHandler):
     # Finite responses below provide Content-Length; streams are chunked.
     protocol_version = "HTTP/1.1"
 
-    def log_message(self, fmt, *args):  # noqa: suppress request logs in tests
+    def log_message(self, fmt, *args):  # suppress request logs in tests
         pass
 
     def _request_id(self) -> str:

packages/node/meshnet_node/wizard.py

@@ -2,7 +2,6 @@
 
 from __future__ import annotations
 
-import sys
 import urllib.error
 import urllib.request
 from pathlib import Path