Add Rate Monitor app — Booking.com + direct booking engine competitor rates

Combines Booking.com Playwright scraper (from forecasting), direct booking
engine scraper (ported from laptop-archive/guestline-monitor), and Newbook
own-hotel rates into one focused tool. Four views: Bookability, Market View
(with price index badges + direct rate sub-rows), Direct Rates (per-competitor
room breakdown, min-stay flags, hotel config/discovery), Rate Analysis
(advance purchase curve, DOW chart, rate timeline, comparison table).

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

backend/services/direct_profiles/__init__.py

@@ -0,0 +1,28 @@
+from .guestline import GuestlineProfile
+from .newbook_scrape import NewbookScrapeProfile
+from .travelclick import TravelClickProfile
+from .directbook import DirectBookProfile
+from .base import BaseProfile
+
+PROFILES = {
+    "guestline": GuestlineProfile,
+    "newbook_scrape": NewbookScrapeProfile,
+    "travelclick": TravelClickProfile,
+    "directbook": DirectBookProfile,
+}
+
+
+def get_profile(name: str) -> BaseProfile:
+    cls = PROFILES.get(name)
+    if not cls:
+        raise ValueError(f"Unknown engine profile: {name}")
+    return cls()
+
+
+def detect_profile(url: str) -> dict | None:
+    """Given a booking URL, return suggested profile name and extracted params."""
+    for name, cls in PROFILES.items():
+        result = cls.detect(url)
+        if result is not None:
+            return {"profile": name, **result}
+    return None