feat: calendar eco

backend/services/ff_calendar.py

@@ -435,18 +435,52 @@ def _parse_impact(impact_td) -> str:
     return "low"
 
 
+def _fetch_via_flaresolverr(url: str) -> Optional[str]:
+    """
+    Fetch a page through FlareSolverr (a headless-browser proxy that solves Cloudflare's
+    JS challenge) instead of a plain HTTP client. FF started 403'ing our direct requests
+    — the response is Cloudflare's "Just a moment..." interstitial, which no amount of
+    header/cookie spoofing can pass (confirmed: replaying a real logged-in session's
+    cf_clearance cookie from a different IP still 403s — it's IP-bound). FlareSolverr runs
+    as a sibling container (see deploy/docker-compose.yml) and is reached over the internal
+    docker network; not configured (e.g. local dev without that container) → returns None
+    so the caller falls back to the direct httpx path unchanged.
+    """
+    import os
+    base = os.environ.get("FLARESOLVERR_URL", "http://flaresolverr:8191/v1")
+    try:
+        resp = httpx.post(
+            base,
+            json={"cmd": "request.get", "url": url, "maxTimeout": 60000},
+            timeout=70,
+        )
+        resp.raise_for_status()
+        data = resp.json()
+        if data.get("status") != "ok":
+            print(f"[FF scrape] FlareSolverr error for {url}: {data.get('message')}", flush=True)
+            return None
+        return data.get("solution", {}).get("response")
+    except Exception as e:
+        print(f"[FF scrape] FlareSolverr unavailable ({e}) — falling back to direct fetch", flush=True)
+        return None
+
+
 def _scrape_week(client: httpx.Client, monday: date) -> list[tuple]:
     """Fetch and parse one week of FF calendar. Returns list of row tuples."""
     url = _week_url(monday)
     print(f"[FF scrape] GET {url}", flush=True)
-    try:
-        resp = client.get(url, timeout=20)
-        resp.raise_for_status()
-    except Exception as e:
-        print(f"[FF scrape] fetch error {url}: {e}", flush=True)
-        return []
 
-    soup = BeautifulSoup(resp.text, "lxml")
+    html = _fetch_via_flaresolverr(url)
+    if html is None:
+        try:
+            resp = client.get(url, timeout=20)
+            resp.raise_for_status()
+            html = resp.text
+        except Exception as e:
+            print(f"[FF scrape] fetch error {url}: {e}", flush=True)
+            return []
+
+    soup = BeautifulSoup(html, "lxml")
     table = soup.find("table", class_="calendar__table")
     if not table:
         # Try alternate selector (FF occasionally restructures)