whisper_refs: fill foxhop ref_text from actual recording

cloned-voices/voices_metadata.json

@@ -281,7 +281,7 @@
   },
   "foxhop": {
     "ref_audio": "cloned-voices/foxhop.wav",
-    "ref_text": "Placeholder — make whisper-refs will replace this with the actual transcript.",
+    "ref_text": "Three drivers and three million people. We don't just fix the dispatch, we balance every workstation before unblocking the bottleneck.",
     "speaker_id": "fox-2026-05-25",
     "gender": "male",
     "duration": 10.0

cloned-voices/whisper_refs.json

@@ -18,6 +18,7 @@
   "faye": "He gave up his position and shut the family up in that tomb of a house so he could study his books.",
   "felix": "She saw that the bed was gilded and so rich that it seemed that of a prince rather than of a private gentleman.",
   "finn": "Why, if we erect a station at the Falls, it is a great economy to get it up to the city.",
+  "foxhop": "Three drivers and three million people. We don't just fix the dispatch, we balance every workstation before unblocking the bottleneck.",
   "gemma": "Do you know? Lake? Oh, I really can't tell, but he'll soon tire of country life.",
   "grace": "As to his age and also the name of his master jacob's statement varied somewhat from the advertisement.",
   "grant": "At the inception of plural marriage among the Latter-day Saints, there was no law, national or state, against its practice.",