Add Portainer-style container bulk actions and network manager.

Always show a containers action bar (start/stop/restart/pause/resume/kill/
recreate/remove/prune) driven by row selection via typed bulk RPC. Rebuild
the container Networking tab into a join/leave network manager with aliases
and optional static IPs, plus a clearer ports table.

server/handlers/networks.js

@@ -87,15 +87,60 @@ export function registerNetworkHandlers(session) {
   })
 
   session.respond('connectNetwork', async (args) => {
-    await docker.getNetwork(args.networkId).connect({ Container: args.containerId })
-    return { success: true, message: 'Container connected to network' }
+    const networkId = args.networkId || args.id || args.network
+    const containerId = args.containerId || args.container
+    if (!networkId || !containerId) {
+      throw Object.assign(new Error('networkId and containerId required'), {
+        code: 'INVALID_ARGS',
+      })
+    }
+
+    /** @type {Record<string, unknown>} */
+    const endpointConfig = {}
+    if (Array.isArray(args.aliases) && args.aliases.length) {
+      endpointConfig.Aliases = args.aliases
+        .map((a) => String(a || '').trim())
+        .filter(Boolean)
+    }
+    const ipv4 = args.ipv4Address || args.IPv4Address
+    const ipv6 = args.ipv6Address || args.IPv6Address
+    if (ipv4 || ipv6) {
+      endpointConfig.IPAMConfig = {}
+      if (ipv4) endpointConfig.IPAMConfig.IPv4Address = String(ipv4).trim()
+      if (ipv6) endpointConfig.IPAMConfig.IPv6Address = String(ipv6).trim()
+    }
+
+    const connectOpts = { Container: containerId }
+    if (Object.keys(endpointConfig).length) {
+      connectOpts.EndpointConfig = endpointConfig
+    }
+
+    await docker.getNetwork(networkId).connect(connectOpts)
+    return {
+      success: true,
+      message: 'Container connected to network',
+      networkId,
+      containerId,
+    }
   })
 
   session.respond('disconnectNetwork', async (args) => {
+    const networkId = args.networkId || args.id || args.network
+    const containerId = args.containerId || args.container
+    if (!networkId || !containerId) {
+      throw Object.assign(new Error('networkId and containerId required'), {
+        code: 'INVALID_ARGS',
+      })
+    }
     await docker
-      .getNetwork(args.networkId)
-      .disconnect({ Container: args.containerId, Force: args.force || false })
-    return { success: true, message: 'Container disconnected from network' }
+      .getNetwork(networkId)
+      .disconnect({ Container: containerId, Force: args.force || false })
+    return {
+      success: true,
+      message: 'Container disconnected from network',
+      networkId,
+      containerId,
+    }
   })
 
   session.respond('pruneNetworks', async (args) => {