feat: comedy overhaul start, profile page, bot setup docs, auth improvements

Rewrites announcer commentary (HYPE_LINES, DEEP_INTROS, ROUND_HYPE) with
modern edgy humor. Adds BOT_SETUP.md, bot SDK, customization engine,
profile page character display, persistent auth, rate limit tweaks.

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

server/src/db/migrate.ts

@@ -75,6 +75,7 @@ const migrations = [
   `ALTER TABLE bots ADD COLUMN last_fight_at TEXT`,
   `ALTER TABLE bots ADD COLUMN consecutive_errors INTEGER NOT NULL DEFAULT 0`,
   `ALTER TABLE bots ADD COLUMN last_error_at TEXT`,
+  `ALTER TABLE bots ADD COLUMN customization TEXT`,
 ]
 
 for (const sql of migrations) {