video: OMDb Test button shows the real reason (not just 'HTTP 401')

OMDb returns a JSON body even on 401, so surface its actual Error: 'Invalid API
key!' (nudges the user to click OMDb's activation email) vs 'Request limit
reached!' (free-tier daily quota). The worker's pause note uses the same message.

core/video/enrichment/clients.py

@@ -506,11 +506,20 @@ class OMDBClient:
         import requests
         try:
             r = requests.get(self.BASE, params={"apikey": self.api_key, "i": "tt0111161"}, timeout=12)
-            d = r.json() if r.status_code == 200 else {}
+            # OMDb returns a JSON body even on 401 — surface its actual Error so the
+            # user sees WHY ("Invalid API key!" = not activated/wrong key;
+            # "Request limit reached!" = free-tier daily quota, resets at midnight).
+            try:
+                d = r.json() or {}
+            except Exception:
+                d = {}
             if d.get("Response") == "True":
                 return True, "OMDb connection OK"
-            if "invalid api key" in (d.get("Error") or "").lower():
-                return False, "Invalid OMDb API key"
+            err = (d.get("Error") or "").strip()
+            if "invalid api key" in err.lower():
+                return False, "Invalid OMDb API key — did you click the activation link OMDb emailed you?"
+            if err:
+                return False, "OMDb: " + err
             return False, "OMDb returned HTTP " + str(r.status_code)
         except Exception:
             logger.exception("OMDb test failed")
@@ -524,7 +533,12 @@ class OMDBClient:
         # A bad/expired key is a 401 (sometimes a 200 with "Invalid API key!") — a
         # config problem that affects EVERY item, so flag it distinctly.
         if r.status_code == 401:
-            raise OMDbAuthError("OMDb rejected the API key (HTTP 401)")
+            err = ""
+            try:
+                err = ((r.json() or {}).get("Error") or "").strip()
+            except Exception:
+                pass
+            raise OMDbAuthError(err or "OMDb rejected the API key (HTTP 401)")
         r.raise_for_status()
         d = r.json() or {}
         if d.get("Response") != "True":

tests/test_video_enrichment.py

@@ -354,6 +354,22 @@ def test_omdb_worker_keeps_item_on_transient_error(db):
     assert w.stats["errors"] == 1 and w.paused is False   # one blip doesn't pause
 
 
+def test_omdb_test_surfaces_real_error(monkeypatch):
+    # The Test button should show OMDb's actual reason, not just "HTTP 401".
+    class _R:
+        status_code = 401
+        def json(self): return {"Response": "False", "Error": "Request limit reached!"}
+    monkeypatch.setitem(sys.modules, "requests", types.SimpleNamespace(get=lambda u, **k: _R()))
+    ok, msg = OMDBClient("KEY").test()
+    assert ok is False and "Request limit reached!" in msg
+
+    class _R2(_R):
+        def json(self): return {"Response": "False", "Error": "Invalid API key!"}
+    monkeypatch.setitem(sys.modules, "requests", types.SimpleNamespace(get=lambda u, **k: _R2()))
+    ok2, msg2 = OMDBClient("KEY").test()
+    assert ok2 is False and "activation" in msg2.lower()   # nudges toward the email link
+
+
 def test_omdb_ratings_raises_on_invalid_key(monkeypatch):
     from core.video.enrichment.clients import OMDbAuthError