Perk-a-cola redesign + surface RCON map/gametype/roster/health

Themes the fleet manager around the Electric Cherry perk-a-cola from Mob of
the Dead — cherry-red art-deco label with electric cyan discharge. New
design tokens (Alfa Slab One + Inter + JetBrains Mono, self-hosted), full
redesign of layout/dashboard/cards/detail page, tokens pass on
deployments/betas/pipeline/beta/diff, cherry+lightning favicon.

Lights up server data that RCON was already fetching but the UI dropped.
parsePlayerRoster() extracts num/score/ping/guid/name from both status
dialects. Worker persists last_map/last_gametype/last_roster/last_seen_at/
last_error (new columns with idempotent boot-time ALTERs) and emits them
over SSE. Fleet cards now show health dot, map · gametype, top-3 roster
preview, and last-seen. Detail page adds a sortable full roster with
distinct empty-lobby vs offline states. New health classifier
(online/stale/offline) drives the visual state.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/lib/server/fleet/health.ts

@@ -0,0 +1,22 @@
+export type Health = 'online' | 'stale' | 'offline';
+
+const ONLINE_MAX_MS = 30_000;
+const STALE_MAX_MS = 120_000;
+
+/**
+ * Classify server health from its last successful RCON timestamp.
+ * `offline` if we've never seen it, or if RCON just failed, or if the last
+ * successful reply is >120s old. `stale` if the last reply is 30-120s old
+ * (RCON glitchy). `online` if fresh.
+ */
+export function classifyHealth(lastSeenAt: string | null, lastError: string | null): Health {
+    if (!lastSeenAt) return 'offline';
+    const age = Date.now() - new Date(lastSeenAt).getTime();
+    if (!Number.isFinite(age) || age < 0) return 'offline';
+    if (age <= ONLINE_MAX_MS) {
+        // Even with a fresh last_seen, a very recent error demotes to stale
+        return lastError ? 'stale' : 'online';
+    }
+    if (age <= STALE_MAX_MS) return 'stale';
+    return 'offline';
+}