Refactor game logic into utility modules and add cross-device sync

Extracted game state management, share logic, and stats API calls into dedicated modules (game-persistence.svelte.ts, share.ts, stats-client.ts), and moved daily verse loading to client-side to fix timezone issues. Added a guesses column to daily_completions for cross-device state restoration for logged-in users, a new GET /api/stats endpoint, and a staging deploy script.

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

scripts/dedup-completions.ts

@@ -0,0 +1,41 @@
+import { Database } from 'bun:sqlite';
+import path from 'path';
+
+const dbUrl = process.env.DATABASE_URL;
+if (!dbUrl) throw new Error('DATABASE_URL is not set');
+
+const dbPath = dbUrl.startsWith('file:') ? dbUrl.slice(5) : dbUrl;
+const db = new Database(path.resolve(dbPath));
+
+const duplicates = db.query(`
+  SELECT anonymous_id, date, COUNT(*) as count
+  FROM daily_completions
+  GROUP BY anonymous_id, date
+  HAVING count > 1
+`).all() as { anonymous_id: string; date: string; count: number }[];
+
+if (duplicates.length === 0) {
+  console.log('No duplicates found.');
+  process.exit(0);
+}
+
+console.log(`Found ${duplicates.length} duplicate group(s):`);
+
+const deleteStmt = db.query(`
+  DELETE FROM daily_completions
+  WHERE anonymous_id = $anonymous_id AND date = $date
+    AND id NOT IN (
+      SELECT id FROM daily_completions
+      WHERE anonymous_id = $anonymous_id AND date = $date
+      ORDER BY completed_at ASC
+      LIMIT 1
+    )
+`);
+
+for (const { anonymous_id, date, count } of duplicates) {
+  deleteStmt.run({ $anonymous_id: anonymous_id, $date: date });
+  console.log(`  ${anonymous_id} / ${date}: kept earliest, deleted ${count - 1} row(s) (had ${count})`);
+}
+
+console.log('Done.');
+db.close();