Share the excluded-ranges filter with IP Addresses; add Admin Links page

IP Addresses (IPAM) now reads the same excluded-ranges setting the
Consistency page manages, so "not interesting" addresses - a Docker
bridge network repeating on every host, say - can be hidden there too.
Adds a "Hide excluded addresses" toggle (on by default, with a live
count), an inline ranges editor matching Consistency's, an "excluded"
badge on rows shown anyway, and a per-row "Exclude..." shortcut that
suggests a /24 (or /64 for IPv6) around that address. Editing ranges
from either page updates both, since it's one shared setting.

Also adds Operations > Admin Links: a single page summarizing every
admin bookmark added across all servers (Dockge, Webmin, Cockpit, etc,
previously only visible per-server on each server's own detail page),
sortable and searchable, with the same add/edit/delete capability -
adding one here just asks which server it belongs to.

Verified both with real HTTP-level tests: a genuine Express app, a
scratch SQLite DB, and forged sessions, covering the exclusion
matching, the shared-setting round trip, the links aggregation and
join, and role enforcement - the real dev DB was confirmed untouched
throughout. Both packages build clean.

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

web/src/layout/AppShell.tsx

@@ -31,6 +31,7 @@ import {
   IconShieldCheck,
   IconTicket,
   IconPlug,
+  IconExternalLink,
 } from "@tabler/icons-react";
 import { api, type CurrentUser, type MaintenanceWindow } from "../api/client";
 import { formatRemaining } from "../utils/duration";
@@ -103,6 +104,7 @@ const NAV: NavEntry[] = [
       { to: "/maintenance", label: "Maintenance", icon: <IconTool size={20} /> },
       { to: "/uptime-kuma", label: "Uptime Kuma", icon: <IconActivityHeartbeat size={20} /> },
       { to: "/osticket", label: "osTicket", icon: <IconTicket size={20} /> },
+      { to: "/admin-links", label: "Admin Links", icon: <IconExternalLink size={20} /> },
       { to: "/generator", label: "Generator", icon: <IconWand size={20} /> },
     ],
   },