feat(admission): add group VPN exceptions

docs/accessibility.md

@@ -12,6 +12,7 @@ Player account management, administrator navigation, dashboard metrics and chart
 - Darkened the accent color so accent text reaches at least 4.5:1 contrast on both canvas and panel backgrounds.
 - Preserved reduced-motion behavior and disabled decorative cursor animation when requested.
 - Added labels or accessible names to search, Minecraft username, settings, group, and event-filter controls.
+- Added per-user group dropdowns with immediate-change instructions, keyboard submission fallback, and live success or error feedback.
 - Added `fieldset` and `legend` semantics to multi-select event-type filters.
 - Added table captions, column scopes, and row scopes to administrator data tables.
 - Added `role=status` with polite announcements for successful nickname changes and `role=alert` with assertive announcements for errors.

docs/architecture.md

@@ -16,7 +16,7 @@ The bot creates private login links in response to `/register` and `/account`. D
 
 Velocity sends the authenticated Java UUID, current username, source IP, server ID, request ID, and occurrence time. The API matches UUID first. Username fallback is allowed only when the stored account has no UUID, after which UUID and canonical username are updated.
 
-The admission decision is fail closed. Unknown players, invalid responses, expired requests, authentication failures, and unavailable API responses are denied with the configured registration message. After admission succeeds, `PostLoginEvent` reports a confirmed proxy connection through a fresh, authenticated, replay-protected request. Connection telemetry is best effort and never disconnects an already admitted player.
+The admission decision is fail closed. Unknown players, disabled effective groups, disallowed confirmed VPN/proxy/Tor connections, invalid responses, expired requests, authentication failures, and unavailable API responses are denied. Registration, group-access, and anonymized-network denials use independent operator-configured messages; transport and service failures retain the plugin's local fallback. After admission succeeds, `PostLoginEvent` reports a confirmed proxy connection through a fresh, authenticated, replay-protected request. Connection telemetry is best effort and never disconnects an already admitted player.
 
 ## Trust boundaries
 
@@ -38,7 +38,7 @@ The admission decision is fail closed. Unknown players, invalid responses, expir
 
 ## IP intelligence
 
-ProxyCheck.io supplies approximate city/region/country, coordinates, timezone, ASN, network company, connection type, proxy signal, risk, and VPN/proxy/Tor classification. Results are cached in PostgreSQL for 48 hours by default. Portal and game login events are enriched when data is available; lookup failures do not deny login. User Minecraft-account additions fail closed for unknown, VPN, proxy, or Tor classifications and record denied attempts. Hosting-provider blocking is optional through `BLOCK_HOSTING_IPS=true`. Private and reserved addresses are never sent to ProxyCheck.
+ProxyCheck.io supplies approximate city/region/country, coordinates, timezone, ASN, network company, connection type, proxy signal, risk, and VPN/proxy/Tor classification. Results are cached in PostgreSQL for 48 hours by default. Portal logins and every bearer-authenticated Velocity login are enriched through the cache before identity resolution; lookup failures do not independently deny a registered player. Confirmed VPN, proxy, and Tor game connections require an exception on the player's effective group. User Minecraft-account additions fail closed for unknown, VPN, proxy, or Tor classifications and record denied attempts. Hosting-provider blocking is optional through `BLOCK_HOSTING_IPS=true`. Private and reserved addresses are never sent to ProxyCheck.
 
 ## Event naming
 

docs/security-review.md

@@ -25,7 +25,9 @@ Next.js portal and APIs, Discord bot, PostgreSQL persistence, Keycloak admin aut
 - Velocity admission and confirmed-connection requests have a 45-second clock window and database-unique request IDs for cross-instance replay prevention.
 - Velocity and its API fail closed.
 - Registered players require an enabled effective group; explicit assignments replace rather than combine with the protected, disabled-by-default `everyone` fallback.
-- Group and membership mutations re-check the Keycloak administrator role server-side; destructive group deletion and its audit event commit atomically.
+- Confirmed VPN, proxy, and Tor game connections are denied unless that same effective group has an explicit exception; `everyone` and new groups default to no exception.
+- Group, VPN-policy, and membership mutations re-check the Keycloak administrator role server-side; registry assignments, VPN-policy changes, message settings, and destructive group deletion commit atomically with their audit events.
+- Every bearer-authenticated Velocity login uses cached IP intelligence before identity resolution, preventing account-creation races from bypassing network policy; malformed provider proxy signals classify as unknown.
 - Event filters accept only event types already present in the ledger, and event detail routes remain role-protected.
 - The administrator-only map defaults to bundled Natural Earth boundaries. OpenStreetMap tile requests begin only after an explicit operator opt-in; marker coordinates are not transmitted as data, but the requested tiles disclose the viewed geographic extent along with the administrator's IP and portal origin.
 - Grouped-map popup labels and links are created with DOM `textContent` and server-rendered React escaping rather than interpolated HTML.