feat: ticker symbol voting for live votes

- Add ticker column to games table with migration
- Bootstrap tickers from tickers.json config on startup
- POST /api/votes/live accepts optional ticker field for direct game
  lookup (bypasses timestamp-interval matching)
- Ticker votes work for any game, not just session games
- Update API docs and add e2e tests for ticker voting
- Version bump to 0.6.5

Made-with: Cursor

backend/bootstrap.js

@@ -54,6 +54,33 @@ function bootstrapGames() {
   console.log(`Successfully imported ${records.length} games from CSV`);
 }
 
+function bootstrapTickers() {
+  const tickersPath = path.join(__dirname, 'config', 'tickers.json');
+
+  if (!fs.existsSync(tickersPath)) {
+    console.log('tickers.json not found. Skipping ticker bootstrap.');
+    return;
+  }
+
+  const tickers = JSON.parse(fs.readFileSync(tickersPath, 'utf-8'));
+
+  const update = db.prepare('UPDATE games SET ticker = ? WHERE title = ? AND (ticker IS NULL OR ticker != ?)');
+
+  const updateMany = db.transaction((entries) => {
+    let updated = 0;
+    for (const [symbol, title] of entries) {
+      const result = update.run(symbol, title, symbol);
+      updated += result.changes;
+    }
+    return updated;
+  });
+
+  const updated = updateMany(Object.entries(tickers));
+  if (updated > 0) {
+    console.log(`Updated ticker symbols for ${updated} games`);
+  }
+}
+
 function parseLengthMinutes(lengthStr) {
   if (!lengthStr || lengthStr === '????' || lengthStr === '?') {
     return null;
@@ -69,5 +96,5 @@ function parseBoolean(value) {
   return value.toLowerCase() === 'yes' ? 1 : 0;
 }
 
-module.exports = { bootstrapGames };
+module.exports = { bootstrapGames, bootstrapTickers };