feat: v5 — boxing poster fight cards, 12-char names, diverse mock bots

- Fight Card page: dramatic poster background with cross-hatch, spotlights,
  vignettes, corner brackets, scan lines; 3D VS orb with punch animation;
  selectable undercard with main event always pinned at top
- PosterSprite: high-quality 480px poster frame with 6-pass renderer
  (aura, glow, bevel, specular, particles); PixelGlove component
- 12-char bot name limit across all forms and server validation
- Mock bots: all 100 now have diverse archetypes (25 types), 25% human
  fighters; seedMockBots updates existing bots on restart
- Leaderboard: inline SpritePreview next to each bot name
- Nostr auth: persistent login, nsec copy button
- Wallet: NWC + Lightning Address, ranked fight flow
- Server: payments, ranked queue, customization endpoint

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/db/startup.ts

@@ -102,11 +102,19 @@ export function runMigrations() {
     "ALTER TABLE bots ADD COLUMN sats_won INTEGER NOT NULL DEFAULT 0",
     "ALTER TABLE bots ADD COLUMN sats_wagered INTEGER NOT NULL DEFAULT 0",
     "ALTER TABLE bots ADD COLUMN has_wallet INTEGER NOT NULL DEFAULT 0",
+    // Classic bots
+    "ALTER TABLE bots ADD COLUMN bot_type TEXT NOT NULL DEFAULT 'regular'",
   ]
 
   for (const sql of migrations) {
     try { sqlite.exec(sql) } catch { /* column already exists */ }
   }
 
+  // Backfill bot_type for existing mock bots
+  try {
+    sqlite.exec("UPDATE bots SET bot_type = 'mock' WHERE webhook_url LIKE 'http://mock.local%' AND bot_type = 'regular'")
+    sqlite.exec("UPDATE bots SET bot_type = 'classic' WHERE webhook_url LIKE 'http://classic.local%' AND bot_type = 'regular'")
+  } catch { /* ok */ }
+
   console.log('[botfights] database migrated')
 }