fix: search race condition + brand detection + contacts + reassess

- loadDomains(): add generation counter so stale auto-advance fetches
  cannot overwrite a newer user-triggered search result; snapshot filter
  state before the first await so URL reflects what was requested; add
  HTTP status check so backend errors surface as toasts rather than
  silent empty results; auto-advance now calls loadDomains() without
  await so the counter increments correctly per page advance

- beauty_ai: word-boundary regex for short brands (≤5 chars) to stop
  'ref' matching 'reference'/'refresh'/'prefer' etc.; merge phones,
  whatsapp and social_links from site_analyzer directly into result
  (more reliable than AI extraction); add contact_whatsapp and
  contact_social fields to AI JSON schema

- db: add requeue_beauty() for re-assessing already-assessed domains

- beauty_main: /api/beauty/reassess/batch endpoint using requeue_beauty

- index.html: Re-assess Selected bulk button, per-row ↺ button in
  Browse and Pipeline, WhatsApp + social links in Pipeline contact panel

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

app/db.py

@@ -540,6 +540,19 @@ async def queue_beauty(domains: list[str]):
         await db.commit()
 
 
+async def requeue_beauty(domains: list[str]):
+    """Re-queue domains for fresh assessment even if already assessed."""
+    async with aiosqlite.connect(SQLITE_PATH, timeout=30) as db:
+        await db.executemany(
+            """INSERT INTO beauty_queue (domain, status)
+               VALUES (?, 'pending')
+               ON CONFLICT(domain) DO UPDATE SET
+                 status='pending', completed_at=NULL, error=NULL""",
+            [(d,) for d in domains],
+        )
+        await db.commit()
+
+
 async def get_beauty_queue_status():
     async with aiosqlite.connect(SQLITE_PATH, timeout=30) as db:
         async with db.execute("SELECT status, COUNT(*) FROM beauty_queue GROUP BY status") as cur: