fix: WebSocket race conditions, Vue error handler, remove sudo podman, add container health checks

- F1: Guard connectWebSocket against concurrent calls with isWsConnecting flag
- F2: Serialize mesh send operations with sendQueue to prevent fetchMessages races
- F3: Add global Vue error handler with toast notification
- S1: Replace sudo podman with podman across all scripts (rootless Podman)
- S2: Add health-cmd to all 40 container run commands in first-boot-containers.sh

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/deploy-bitcoin-knots.sh

@@ -32,7 +32,7 @@ echo "   ✅ Directory created"
 # Step 2: Deploy Bitcoin Knots node
 echo ""
 echo "₿ Deploying Bitcoin Knots node..."
-sudo podman run -d \
+podman run -d \
   --name bitcoin-knots \
   --restart unless-stopped \
   -p 8332:8332 \
@@ -89,10 +89,10 @@ EOF
 cp /home/archipelago/archy/docker/bitcoin-ui/index.html "$BUILD_DIR/"
 
 # Build the image
-sudo podman build -t localhost/bitcoin-ui:latest "$BUILD_DIR"
+podman build -t localhost/bitcoin-ui:latest "$BUILD_DIR"
 
 # Deploy UI container
-sudo podman run -d \
+podman run -d \
   --name bitcoin-ui \
   --restart unless-stopped \
   -p 8334:80 \
@@ -116,7 +116,7 @@ echo "║  ✅ BITCOIN KNOTS DEPLOYED!                                   ║"
 echo "╚════════════════════════════════════════════════════════════════╝"
 echo ""
 echo "📊 Status:"
-sudo podman ps | grep bitcoin
+podman ps | grep bitcoin
 echo ""
 echo "🌐 Access:"
 echo "   • Web UI:  http://YOUR-SERVER-IP:8334"
@@ -128,5 +128,5 @@ echo "   • User: archipelago"
 echo "   • Pass: (stored in /var/lib/archipelago/secrets/bitcoin-rpc-password)"
 echo ""
 echo "⏰ Blockchain sync will take several hours to days."
-echo "   Check progress: sudo podman logs -f bitcoin-knots"
+echo "   Check progress: podman logs -f bitcoin-knots"
 echo ""