fix: add missing chat_wheel and arcade_pity handlers

Game client saves/loads chat_wheel and arcade_pity data via GET/PUT but
backend had no routes, causing silent data loss on restart (same pattern
as the purchases bug). Added schema columns, migrations, and routes.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

backend/src/lib/db.ts

@@ -33,6 +33,8 @@ function initSchema(db: Database.Database) {
       dust_currency INTEGER DEFAULT 0,
       arcade_pack_credits TEXT DEFAULT '{"standard":0,"premium":0}',
       sounds_wheel TEXT DEFAULT '{}',
+      chat_wheel TEXT DEFAULT '{}',
+      arcade_pity TEXT DEFAULT '{}',
       created_at TEXT DEFAULT (datetime('now')),
       updated_at TEXT DEFAULT (datetime('now'))
     );
@@ -209,4 +211,8 @@ function initSchema(db: Database.Database) {
       updated_at TEXT DEFAULT (datetime('now'))
     );
   `);
+
+  // Migrations for columns added after initial schema
+  try { db.exec("ALTER TABLE players ADD COLUMN chat_wheel TEXT DEFAULT '{}'"); } catch {}
+  try { db.exec("ALTER TABLE players ADD COLUMN arcade_pity TEXT DEFAULT '{}'"); } catch {}
 }

backend/src/lib/handlers/player.ts

@@ -154,6 +154,40 @@ route('player/:steamId/sounds_wheel', ['PUT'], (ctx: HandlerContext) => {
   return { success: true };
 });
 
+// GET /player/:steamId/chat_wheel — Get chat wheel
+route('player/:steamId/chat_wheel', ['GET'], (ctx: HandlerContext) => {
+  const db = getDb();
+  const player = db.prepare('SELECT chat_wheel FROM players WHERE steam_id = ?').get(ctx.params.steamId) as any;
+  if (!player) throw new HttpError(404, 'Player not found');
+  return { chat_wheel: JSON.parse(player.chat_wheel || '{}') };
+});
+
+// PUT /player/:steamId/chat_wheel — Save chat wheel
+route('player/:steamId/chat_wheel', ['PUT'], (ctx: HandlerContext) => {
+  const { chat_wheel } = ctx.body as any;
+  const db = getDb();
+  db.prepare("UPDATE players SET chat_wheel = ?, updated_at = datetime('now') WHERE steam_id = ?")
+    .run(JSON.stringify(chat_wheel || {}), ctx.params.steamId);
+  return { success: true };
+});
+
+// GET /player/:steamId/arcade_pity — Get arcade pity data
+route('player/:steamId/arcade_pity', ['GET'], (ctx: HandlerContext) => {
+  const db = getDb();
+  const player = db.prepare('SELECT arcade_pity FROM players WHERE steam_id = ?').get(ctx.params.steamId) as any;
+  if (!player) throw new HttpError(404, 'Player not found');
+  return { arcade_pity: JSON.parse(player.arcade_pity || '{}') };
+});
+
+// PUT /player/:steamId/arcade_pity — Save arcade pity data
+route('player/:steamId/arcade_pity', ['PUT'], (ctx: HandlerContext) => {
+  const { arcade_pity } = ctx.body as any;
+  const db = getDb();
+  db.prepare("UPDATE players SET arcade_pity = ?, updated_at = datetime('now') WHERE steam_id = ?")
+    .run(JSON.stringify(arcade_pity || {}), ctx.params.steamId);
+  return { success: true };
+});
+
 // POST /player/:steamId/deal-purchase — Buy a deal/offer
 route('player/:steamId/deal-purchase', ['POST'], (ctx: HandlerContext) => {
   const { deal_key } = ctx.body as any;