Security page, admin quick controls, and whitelist reload self-healing

- RCON client retries once on a fresh connection after stale-socket
  timeouts (panel idle overnight held dead sockets, so 'whitelist
  reload' silently failed and approvals needed a server restart)
- Auth watcher verifies pending players against the LIVE whitelist every
  5s and re-writes/reloads if the server missed it, refunding lost
  window time
- Log watcher records blocked join attempts (name + IP) with rate-
  limited notifications — scanner bots are now visible in the panel
- New Security page: blocked-attempt log with one-click IP ban, banned
  players/IPs management, kick-everyone lockdown
- Player detail modal: ban, op/deop, gamemode switching
- Overview quick controls: time/weather/difficulty, gamerule toggles
  (keepInventory, mobGriefing, PvP...), broadcast box
- Settings toggles for blocked-attempt notifications (panel + Discord)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

dashboard/src/app/(panel)/settings/page.tsx

@@ -9,8 +9,10 @@ import { fmtBytes } from "@/lib/format";
 type Settings = {
   registrationWindowMinutes: number;
   notifyJoins: boolean;
+  notifyBlocked: boolean;
   discordEnabled: boolean;
   discordJoins: boolean;
+  discordBlocked: boolean;
   discordWebhookUrl: string;
 };
 
@@ -156,6 +158,11 @@ export default function SettingsPage() {
               onChange={(v) => setValues((s) => (s ? { ...s, notifyJoins: v } : s))}
               label="Notify on player joins/leaves"
             />
+            <Toggle
+              checked={values?.notifyBlocked ?? true}
+              onChange={(v) => setValues((s) => (s ? { ...s, notifyBlocked: v } : s))}
+              label="Notify on blocked join attempts (bots/strangers)"
+            />
           </div>
         </Card>
 
@@ -184,6 +191,11 @@ export default function SettingsPage() {
               onChange={(v) => setValues((s) => (s ? { ...s, discordJoins: v } : s))}
               label="Include joins/leaves"
             />
+            <Toggle
+              checked={values?.discordBlocked ?? true}
+              onChange={(v) => setValues((s) => (s ? { ...s, discordBlocked: v } : s))}
+              label="Include blocked join attempts"
+            />
             <Button
               size="sm"
               onClick={async () => {