fix(cli): code-tags --dry-run help text and capped_wide total label

--dry-run's help text now describes what it computes (the merged
item→codes mapping) instead of a stale "report per-collection item/tag
counts". The CLI's total line now prints capped_wide= for the
per-item --max-codes-per-item cap count (the stats dict key stays
skipped_wide); docs regenerated via docs/scripts/extract_cli.py.

docs/docs/cli/bib-code-tags.md

@@ -33,8 +33,9 @@ Usage: stack bib code-tags [OPTIONS]
 │                                      [default: all]                          │
 │ --anchors-only                       Rules only, straight from fr_anchors    │
 │                                      text — skip pgvector entirely.          │
-│ --dry-run                            Report per-collection item/tag counts;  │
+│ --dry-run                            Compute the merged item→codes mapping   │
-│                                      write nothing.                          │
+│                                      and report what would be tagged; write  │
+│                                      nothing.                                │
 │ --max-codes-per-item        INTEGER  Items with more distinct codes get      │
 │                                      family: tags only (+ hand-family        │
 │                                      codes).                                 │

src/cli/bib.py

@@ -925,7 +925,10 @@ def code_tags(
         help="Rules only, straight from fr_anchors text — skip pgvector entirely.",
     ),
     dry_run: bool = typer.Option(
-        False, "--dry-run", help="Report per-collection item/tag counts; write nothing."
+        False,
+        "--dry-run",
+        help="Compute the merged item→codes mapping and report what would "
+        "be tagged; write nothing.",
     ),
     max_codes_per_item: int = typer.Option(
         200,
@@ -1025,5 +1028,5 @@ def code_tags(
     prefix = "would-" if dry_run else ""
     typer.echo(
         f"total: {prefix}items={stats['items']} {prefix}tags_added={stats['tags_added']} "
-        f"skipped_wide={stats['skipped_wide']}"
+        f"capped_wide={stats['skipped_wide']}"
     )

tests/cli/test_bib_deep.py

@@ -439,7 +439,7 @@ class TestCodeTags:
 
         assert result.exit_code == 0, result.output
         assert "comments: skipped (--anchors-only)" in result.output
-        assert "total: items=0 tags_added=0 skipped_wide=0" in result.output
+        assert "total: items=0 tags_added=0 capped_wide=0" in result.output
         mc_anchors.assert_not_called()
         mc_chunks.assert_not_called()
         mc_apply.assert_not_called()