fix: jina web search with Bearer auth header

acra.py

@@ -33,31 +33,36 @@ def adaptive_chunk(text, max_tok=512):
     return chunks or [text]
 
 def web_search(query: str, max_results: int = 5) -> List[dict]:
-    """Web search via Jina AI s.jina.ai — no API key needed, works from cloud."""
+    """Web search via Jina AI — requires JINA_API_KEY secret in Space."""
     try:
         import urllib.parse
         encoded = urllib.parse.quote(query)
+        jina_key = os.environ.get("JINA_API_KEY", "")
         r = httpx.get(
             f"https://s.jina.ai/?q={encoded}",
-            headers={"Accept": "application/json", "X-Respond-With": "no-content"},
+            headers={
+                "Authorization": f"Bearer {jina_key}",
+                "Accept": "application/json",
+                "X-Retain-Images": "none",
+            },
             timeout=20.0,
             follow_redirects=True
         )
         if r.status_code != 200:
             print(f"Jina returned {r.status_code}: {r.text[:200]}")
             return []
-        data = r.json()
+        data  = r.json()
         items = data.get("data", [])
-        results = []
+        out   = []
         for item in items[:max_results]:
-            snippet = item.get("description") or item.get("content","")
+            snippet = item.get("description") or item.get("content", "")
             if snippet:
-                results.append({
+                out.append({
                     "title":   item.get("title", ""),
                     "snippet": snippet[:500],
                     "url":     item.get("url", "")
                 })
-        return results
+        return out
     except Exception as e:
         print(f"Web search error: {e}")
         return []