fix(llm): stack llm tag --max-tags default is 3, matching the tagger and eval-tags (refs #577)

docs/docs/cli/llm-tag.md

@@ -28,7 +28,7 @@ Usage: stack llm tag [OPTIONS]
 │                                     judging.                                 │
 │                                     [default: 8]                             │
 │    --max-tags              INTEGER  Most themes written per comment.         │
-│                                     [default: 4]                             │
+│                                     [default: 3]                             │
 │    --min-confidence        FLOAT    Shortlist similarity below which a       │
 │                                     judged yes is not written.               │
 │                                     [default: 0.0]                           │

src/cli/llm.py

@@ -287,7 +287,7 @@ def tag(
         8, "--top", help="Themes shortlisted per comment before judging."
     ),
     max_tags: int = typer.Option(
-        4, "--max-tags", help="Most themes written per comment."
+        3, "--max-tags", help="Most themes written per comment."
     ),
     min_confidence: float = typer.Option(
         0.0,