Add server control (start/stop/restart, live logs, broadcast, kick) to webadmin

Docker SDK drives login/char/worldserver containers via docker.sock (mounted
read-only into webadmin); live logs stream over SSE with nginx buffering
disabled so lines arrive in real time. Broadcast/kick go through a new
admin_queue DB table that the world server polls every ~2s in its existing
WorldProcess tick loop, avoiding a second IPC channel to the game server.

Src/World Server/ServerFunctions.cpp

@@ -66,6 +66,48 @@ bool CWorldServer::NPCAnnounce( const char msg[200], const char npc[50])
 	return true;
 }
 
+// Poll the admin_queue table (written by the webadmin panel) for pending
+// broadcast/kick actions and execute them. There's no direct socket between
+// webadmin and the world server, so this DB-polling approach reuses the
+// existing MYSQL connection instead of adding a second IPC channel.
+void CWorldServer::PollAdminQueue( )
+{
+    // QStore holds SQLMutex locked until QFree() -- copy the rows out and
+    // free the result set first, since NPCAnnounce/pakGMKick/QExecute below
+    // issue their own queries and would deadlock on the same (non-recursive)
+    // mutex if called while this result set is still open.
+    struct QueueItem { int id; char type[20]; char payload[255]; };
+    QueueItem items[20];
+    int count = 0;
+
+    MYSQL_RES* result = DB->QStore("SELECT id, type, payload FROM admin_queue WHERE executed=0 ORDER BY id LIMIT 20");
+    if(result != NULL)
+    {
+        MYSQL_ROW row;
+        while(count < 20 && (row = mysql_fetch_row(result)) != NULL)
+        {
+            items[count].id = atoi(row[0]);
+            strncpy_s(items[count].type, row[1], sizeof(items[count].type)-1);
+            strncpy_s(items[count].payload, row[2], sizeof(items[count].payload)-1);
+            count++;
+        }
+    }
+    DB->QFree( );
+
+    for(int i = 0; i < count; i++)
+    {
+        if(strcmp(items[i].type, "broadcast") == 0)
+        {
+            NPCAnnounce(items[i].payload, "[Admin]");
+        }
+        else if(strcmp(items[i].type, "kick") == 0)
+        {
+            pakGMKick(NULL, items[i].payload);
+        }
+        DB->QExecute("UPDATE admin_queue SET executed=1 WHERE id=%i", items[i].id);
+    }
+}
+
 // NPC Whisper to a character
 bool CWorldServer::NPCWhisper( CPlayer* thisclient, CMonster* thismon, const char msg[200], const char npc[50] )
 {