feat(ebook): enhance phrase judgment logging with failure tracking

python/ebook_search/api/routes/admin.py

@@ -121,9 +121,11 @@ def judge_ngrams(request: Request, config: AppConfig, session: DbSession) -> HTM
         return templates.TemplateResponse(request, "partials/error.html", {"message": str(error)}, status_code=500)
 
     logger.info(
-        "ebook_admin_judge_ngrams_complete books_seen=%s books_judged=%s candidates_judged=%s protected=%s mentions=%s",
+        "ebook_admin_judge_ngrams_complete books_seen=%s books_judged=%s books_failed=%s candidates_judged=%s "
+        "protected=%s mentions=%s",
         result.books_seen,
         result.books_judged,
+        result.books_failed,
         result.candidates_judged,
         result.protected_phrases,
         result.phrase_mentions,
@@ -136,6 +138,7 @@ def judge_ngrams(request: Request, config: AppConfig, session: DbSession) -> HTM
                 f"Judged {result.candidates_judged} candidates across {result.books_judged} of "
                 f"{result.books_seen} books; {result.protected_phrases} protected phrases, "
                 f"{result.phrase_mentions} mentions"
+                + (f"; {result.books_failed} books failed" if result.books_failed else "")
             )
         },
     )