fix: model user assignment by service instead of port

src/data/mockDashboard.ts

@@ -51,8 +51,7 @@ export const dashboardSnapshot = {
       id: 'u-1',
       username: 'night-shift',
       password: 'kettle!23',
-      host: 'edge.example.net',
-      port: 1080,
+      serviceId: 'socks-main',
       status: 'live' as const,
       usedBytes: 621_805_568,
       quotaBytes: 1_073_741_824,
@@ -61,8 +60,7 @@ export const dashboardSnapshot = {
       id: 'u-2',
       username: 'ops-east',
       password: 'east/line',
-      host: 'edge.example.net',
-      port: 1080,
+      serviceId: 'socks-main',
       status: 'warn' as const,
       usedBytes: 949_010_432,
       quotaBytes: 1_073_741_824,
@@ -71,8 +69,7 @@ export const dashboardSnapshot = {
       id: 'u-3',
       username: 'lab-unlimited',
       password: 'open lane',
-      host: 'edge.example.net',
-      port: 2080,
+      serviceId: 'socks-lab',
       status: 'idle' as const,
       usedBytes: 42_844_160,
       quotaBytes: null,
@@ -81,8 +78,7 @@ export const dashboardSnapshot = {
       id: 'u-4',
       username: 'burst-user',
       password: 'spent-all',
-      host: 'edge.example.net',
-      port: 2080,
+      serviceId: 'socks-lab',
       status: 'fail' as const,
       usedBytes: 1_228_800_000,
       quotaBytes: 1_073_741_824,
@@ -95,22 +91,40 @@ export const dashboardSnapshot = {
     storageMode: 'flat files for config and counters',
     services: [
       {
-        name: 'socks',
+        id: 'socks-main',
+        name: 'SOCKS5 main',
+        protocol: 'socks5',
         description: 'Primary SOCKS5 entrypoint with user auth.',
         port: 1080,
         enabled: true,
+        assignable: true,
       },
       {
-        name: 'admin',
+        id: 'socks-lab',
+        name: 'SOCKS5 lab',
+        protocol: 'socks5',
+        description: 'Secondary SOCKS5 service for lab and overflow users.',
+        port: 2080,
+        enabled: true,
+        assignable: true,
+      },
+      {
+        id: 'admin',
+        name: 'Admin',
+        protocol: 'http',
         description: 'Restricted admin visibility endpoint.',
         port: 8081,
         enabled: true,
+        assignable: false,
       },
       {
-        name: 'proxy',
+        id: 'proxy',
+        name: 'HTTP proxy',
+        protocol: 'http',
         description: 'Optional HTTP/HTTPS proxy profile.',
         port: 3128,
         enabled: false,
+        assignable: true,
       },
     ],
     previewConfig: `daemon