fix(preflight): Apply stored fingerprint to task browser

- Add WorkerFingerprint interface with timezone, city, state, ip, locale
- Store fingerprint in TaskWorker after preflight passes
- Pass fingerprint through TaskContext to handlers
- Apply timezone via CDP and locale via Accept-Language header
- Ensures browser fingerprint matches proxy IP location

This fixes anti-detect detection where timezone/locale mismatch
with proxy IP was getting blocked by Cloudflare.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/scripts/count-jane-stores.ts

@@ -0,0 +1,98 @@
+/**
+ * Count Jane stores by state
+ * Usage: npx ts-node scripts/count-jane-stores.ts
+ */
+
+import puppeteer from 'puppeteer-extra';
+import StealthPlugin from 'puppeteer-extra-plugin-stealth';
+
+puppeteer.use(StealthPlugin());
+
+async function main() {
+  console.log('Counting Jane stores...\n');
+
+  const browser = await puppeteer.launch({
+    headless: true,
+    args: ['--no-sandbox', '--disable-setuid-sandbox'],
+  });
+
+  const page = await browser.newPage();
+
+  // Capture store data from API
+  const stores: any[] = [];
+
+  await page.setRequestInterception(true);
+  page.on('request', (req) => {
+    const type = req.resourceType();
+    if (['image', 'font', 'media', 'stylesheet'].includes(type)) {
+      req.abort();
+    } else {
+      req.continue();
+    }
+  });
+
+  page.on('response', async (response) => {
+    const url = response.url();
+    if (url.includes('iheartjane.com') && url.includes('stores')) {
+      try {
+        const json = await response.json();
+        if (json.stores && Array.isArray(json.stores)) {
+          stores.push(...json.stores);
+        }
+      } catch {}
+    }
+  });
+
+  // Visit the store directory
+  console.log('Loading Jane store directory...');
+  await page.goto('https://www.iheartjane.com/stores', {
+    waitUntil: 'networkidle2',
+    timeout: 60000,
+  });
+
+  // Wait for stores to load
+  await new Promise(r => setTimeout(r, 5000));
+
+  // Also try to get store count from page content
+  const pageStoreCount = await page.evaluate(() => {
+    // Look for store count in page text
+    const text = document.body.innerText;
+    const match = text.match(/(\d+)\s*stores?/i);
+    return match ? parseInt(match[1]) : null;
+  });
+
+  await browser.close();
+
+  // Count by state
+  const byState: Record<string, number> = {};
+  for (const store of stores) {
+    const state = store.state || 'Unknown';
+    byState[state] = (byState[state] || 0) + 1;
+  }
+
+  console.log('\n=== JANE STORE COUNTS ===\n');
+  console.log(`Total stores captured from API: ${stores.length}`);
+  if (pageStoreCount) {
+    console.log(`Page claims: ${pageStoreCount} stores`);
+  }
+
+  console.log('\nBy State:');
+  const sorted = Object.entries(byState).sort((a, b) => b[1] - a[1]);
+  for (const [state, count] of sorted) {
+    console.log(`  ${state}: ${count}`);
+  }
+
+  // Check Arizona specifically
+  const azStores = stores.filter(s =>
+    s.state === 'Arizona' || s.state === 'AZ'
+  );
+  console.log(`\nArizona stores: ${azStores.length}`);
+  if (azStores.length > 0) {
+    console.log('Sample AZ stores:');
+    for (const s of azStores.slice(0, 5)) {
+      console.log(`  - ${s.name} (ID: ${s.id}) - ${s.city}`);
+    }
+  }
+}
+
+main().catch(console.error);