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

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",