✨ feat(web): integrate embedded web server, REST/SSE APIs and modernize configuration

- Add embedded KLALBWebServer with REST API, SSE streaming (200ms) and SPA hosting
- Introduce enableTUN configuration flag with fallback and non-admin execution support
- Refactor LineTable and ConnectLineTable to openConnections and autoConnections
- Rename denyLineTableQuery/Broadcast to denyConnectionQuery/Broadcast with backwards compatibility
- Support runtime config hot-reloading and automatic persistence to klalb-config.json
- Update default Web API port to 4665 and update dashboard submodule reference

klalb-config.json

@@ -10,16 +10,19 @@
     "TCPListen": "tcp://0.0.0.0:4565",
     "UDPListen": "udp://0.0.0.0:4572",
     "VirtualSocketName": "kltp",
-    "LineTable": [
+    "openConnections": [
       "tcp://kne03.yoyo250.fun:4565",
-      "tcp://kne04.yoyo250.fun:4565"
-    ],
-    "ConnectLineTable": [
+      "tcp://kne04.yoyo250.fun:4565",
       "tcp://07f4acdef99b.ofalias.net:4565",
       "tcp://kne01.yoyo250.fun:4565",
       "tcp://kne02.yoyo250.fun:4565"
     ],
-    "ntpServerTable": [
+    "autoConnections": [
+      "tcp://07f4acdef99b.ofalias.net:4565",
+      "tcp://kne01.yoyo250.fun:4565",
+      "tcp://kne02.yoyo250.fun:4565"
+    ],
+    "ntpServers": [
       "ntp://ntp1.aliyun.com",
       "ntp://ntp2.aliyun.com",
       "ntp://ntp3.aliyun.com",
@@ -38,8 +41,8 @@
       "ntp://us.ntp.org.cn"
     ],
     "ExtraRoutes": [],
-    "denyLineTableQuery": false,
-    "denyLineTableBroadcast": false,
+    "denyConnectionQuery": false,
+    "denyConnectionBroadcast": false,
     "congestionAlgorithm": "BBR",
     "burstLimit": 2.0,
     "delayUpperBound": 1.2,
@@ -47,10 +50,13 @@
     "nagleDelayTime": 1000000,
     "linkNagleDelayTime": 0,
     "linkConnectionsCount": 1,
-    "TUNName": null,
+    "enableTUN": false,
+    "TUNName": "KLALB_SRv6",
     "performanceStrategy": "multiscatter",
-    "DeviceName": "SerinaNya PC",
-    "DeviceDescription": "desc",
+    "DeviceName": "Device Name",
+    "DeviceDescription": "The Description of Device",
+    "webUI": true,
+    "webPort": 4665,
     "NetworkInterfaceExcepts": [],
     "Type": "KLALBController"
   },