Re-theme the app: token-based CSS and a full face lift

CSS refactor: every color, font, radius, and shadow is now defined once
in theme.css; all other styles derive translucent variants with
color-mix(), so re-theming means editing one file. Removed the
duplicate core.css/style.css import chains, dead styles, and the
Bootstrap/Tailwind orphan classes that were silently unstyled
(the main reason the splash page looked broken).

New "Lantern & Brine" look: brass and parchment on a lantern-lit
ink-navy night, Pirata One wordmark with Alegreya SC/Sans body fonts
(self-hosted via fontsource — they were previously referenced but
never loaded), parchment-faced playing cards, and a rebuilt splash
page. Inline color styles in components were replaced with semantic
classes (prompt-box, notice-banner, status chips, etc.), the rulebook's
embedded palette was updated to match, and the leftover Vite favicon
and "frontend" page title were replaced.

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

frontend/src/assets/css/lobby.css

@@ -1,64 +1,13 @@
-/* --- Lobby / Hold View --- */
+/* --- Lobby / Ship's Hold --- */
 .lobby-view {
     max-width: 700px;
     margin: 2rem auto;
 }
 
-.lobby-view h2 {
-    font-family: var(--font-heading);
-    font-size: 2.2rem;
-    color: var(--gold);
-    margin-bottom: 0.5rem;
-}
-
 .lobby-status-box {
     margin: 2rem 0;
 }
 
-.player-chips {
-    display: flex;
-    flex-wrap: wrap;
-    gap: 0.75rem;
-    justify-content: center;
-    margin-top: 1rem;
-}
-
-.player-chip {
-    background: rgba(255,255,255,0.06);
-    border: 1px solid rgba(255,255,255,0.1);
-    padding: 0.5rem 1.25rem;
-    border-radius: 30px;
-    display: flex;
-    align-items: center;
-    gap: 0.5rem;
-    transition: var(--transition-smooth);
-}
-
-.player-chip.current-user {
-    background: rgba(0, 242, 254, 0.15);
-    border-color: var(--neon-cyan);
-    box-shadow: 0 0 10px rgba(0,242,254,0.15);
-}
-
-.player-chip.voted-chip {
-    border-color: var(--neon-emerald);
-    background-color: rgba(0,255,135,0.05);
-}
-
-.player-chip.not-voted-chip {
-    border-color: rgba(255,255,255,0.1);
-}
-
-.creator-badge {
-    background: var(--gold);
-    color: var(--text-dark);
-    font-size: 0.7rem;
-    font-weight: 700;
-    padding: 0.1rem 0.4rem;
-    border-radius: 4px;
-    text-transform: uppercase;
-}
-
 .links-box {
     text-align: left;
     margin-bottom: 2rem;
@@ -69,7 +18,7 @@
 }
 
 .link-item h4 {
-    color: var(--text-primary);
+    color: var(--text);
     margin-bottom: 0.5rem;
 }
 
@@ -80,27 +29,17 @@
 
 .copy-input {
     flex: 1;
-    background: #05080e;
-    border: 1px solid var(--glass-border);
-    color: var(--text-primary);
-    padding: 0.5rem 1rem;
-    border-radius: 8px;
-    font-family: var(--font-body);
+    background: var(--bg-deep);
     font-size: 0.95rem;
+    padding: 0.5rem 1rem;
 }
 
 .copy-input.admin-input {
-    border-color: var(--gold-dark);
-    color: var(--gold);
+    border-color: var(--edge-accent);
+    color: var(--accent);
 }
 
 .admin-link-item {
-    border-top: 1px dashed rgba(212, 175, 55, 0.3);
+    border-top: 1px dashed var(--edge-accent);
     padding-top: 1.5rem;
 }
-
-.info-text {
-    font-size: 0.9rem;
-    color: var(--text-muted);
-    margin-bottom: 0.5rem;
-}