Add Linux support: cross-platform restart, nvidia-ml-py dep, README update

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/pyproject.toml

@@ -41,7 +41,7 @@ dependencies = [
     "zeroconf>=0.131.0",
     "pyserial>=3.5",
     "psutil>=5.9.0",
-    "nvidia-ml-py>=12.0.0; sys_platform == 'win32'",
+    "nvidia-ml-py>=12.0.0",
     "PyAudioWPatch>=0.2.12; sys_platform == 'win32'",
     "sounddevice>=0.5",
 ]

server/restart.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+# Restart the WLED Screen Controller server (Linux/macOS)
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+
+# Stop any running instance
+PIDS=$(pgrep -f 'wled_controller\.main' 2>/dev/null || true)
+if [ -n "$PIDS" ]; then
+    echo "Stopping server (PID $PIDS)..."
+    pkill -f 'wled_controller\.main' 2>/dev/null || true
+    sleep 2
+fi
+
+# Start server detached
+echo "Starting server..."
+cd "$SCRIPT_DIR"
+nohup python -m wled_controller.main > /dev/null 2>&1 &
+sleep 3
+
+# Verify it's running
+NEW_PID=$(pgrep -f 'wled_controller\.main' 2>/dev/null || true)
+if [ -n "$NEW_PID" ]; then
+    echo "Server started (PID $NEW_PID)"
+else
+    echo "WARNING: Server does not appear to be running!"
+fi

server/src/wled_controller/api/routes/system.py

@@ -273,19 +273,26 @@ STORE_MAP = {
     "profiles": "profiles_file",
 }
 
-_RESTART_SCRIPT = Path(__file__).resolve().parents[4] / "restart.ps1"
+_SERVER_DIR = Path(__file__).resolve().parents[4]
 
 
 def _schedule_restart() -> None:
-    """Spawn restart.ps1 after a short delay so the HTTP response completes."""
+    """Spawn a restart script after a short delay so the HTTP response completes."""
 
     def _restart():
         import time
         time.sleep(1)
-        subprocess.Popen(
-            ["powershell", "-ExecutionPolicy", "Bypass", "-File", str(_RESTART_SCRIPT)],
-            creationflags=subprocess.DETACHED_PROCESS | subprocess.CREATE_NEW_PROCESS_GROUP,
-        )
+        if sys.platform == "win32":
+            subprocess.Popen(
+                ["powershell", "-ExecutionPolicy", "Bypass", "-File",
+                 str(_SERVER_DIR / "restart.ps1")],
+                creationflags=subprocess.DETACHED_PROCESS | subprocess.CREATE_NEW_PROCESS_GROUP,
+            )
+        else:
+            subprocess.Popen(
+                ["bash", str(_SERVER_DIR / "restart.sh")],
+                start_new_session=True,
+            )
 
     threading.Thread(target=_restart, daemon=True).start()