Add fetch_category_names to Eviivo, QBook and Mews profiles

- Eviivo: no-dates page fetch returns all room types with data-item-name and
  data-rate-plan-name; single request populates the full name catalogue
- QBook: item_name already in /api/pull response; extracted on a dummy date
  call; no distinct rate plan names exposed so rate_labels left empty
- Mews: getCalendarData (bookingEngineId field) returns resourceCategories[].name
  and rates[].name as {en-US: ...} dicts; both room and rate labels populated

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

backend/services/direct_profiles/mews.py

@@ -91,6 +91,40 @@ class MewsProfile(BaseProfile):
             return {"booking_engine_id": m.group(1)}
         return None
 
+    async def fetch_category_names(self, client, params: dict) -> tuple[dict, dict]:
+        if not await _ensure_config(client, params):
+            return {}, {}
+        tz = params.get("_tz", ZoneInfo("Europe/London"))
+        today = date.today()
+        r = await client.post(
+            f"{API_BASE}/services/getCalendarData",
+            json={
+                "bookingEngineId": params["booking_engine_id"],
+                "serviceId": params["service_id"],
+                "startUtc": _midnight_utc(today, tz),
+                "endUtc": _midnight_utc(today + timedelta(days=7), tz),
+                "client": CLIENT,
+                "session": _session(),
+            },
+            headers=HEADERS,
+            timeout=20,
+        )
+        if r.status_code != 200:
+            return {}, {}
+        data = r.json()
+        lang = "en-US"
+        room_names = {
+            cat["id"]: cat["name"].get(lang, cat["id"])
+            for cat in data.get("resourceCategories", [])
+            if "name" in cat
+        }
+        rate_names = {
+            rate["id"]: rate["name"].get(lang, rate["id"])
+            for rate in data.get("rates", [])
+            if "name" in rate
+        }
+        return room_names, rate_names
+
     async def fetch_arrival_dates(self, client, params: dict) -> list[str]:
         if not await _ensure_config(client, params):
             return []