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/package.json

@@ -3,11 +3,11 @@
   "private": true,
   "type": "module",
   "scripts": {
-    "dev": "tsx watch src/index.ts",
+    "dev": "tsx watch -r dotenv/config src/index.ts",
     "build": "tsc",
-    "start": "node dist/index.js",
+    "start": "node -r dotenv/config dist/index.js",
     "seed": "tsx src/seed.ts",
-    "fight-loop": "tsx src/fight-loop-cli.ts",
+    "fight-loop": "tsx -r dotenv/config src/fight-loop-cli.ts",
     "migrate": "tsx src/db/migrate.ts"
   },
   "dependencies": {
@@ -15,6 +15,7 @@
     "@hono/node-server": "^1.14.1",
     "better-sqlite3": "^11.9.1",
     "chalk": "^5.6.2",
+    "dotenv": "^17.3.1",
     "drizzle-orm": "^0.40.1",
     "hono": "^4.7.6",
     "nanoid": "^5.1.5",