feat: privacy-respecting analytics

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

server/src/app.ts

@@ -12,6 +12,7 @@ import { betsRouter } from './routes/bets.js'
 import { paymentsRouter } from './routes/payments.js'
 import { tournamentsRouter } from './routes/tournaments.js'
 import { adminRouter } from './routes/admin.js'
+import { statsRouter } from './routes/stats.js'
 import { rateLimit } from './middleware/rate-limit.js'
 
 import { existsSync, readFileSync } from 'fs'
@@ -62,6 +63,7 @@ app.route('/api/bets', betsRouter)
 app.route('/api/payments', paymentsRouter)
 app.route('/api/tournaments', tournamentsRouter)
 app.route('/api/admin', adminRouter)
+app.route('/api/stats', statsRouter)
 
 // In production, serve the frontend SPA
 const __dirname = dirname(fileURLToPath(import.meta.url))