test(fixtures): replace sector-specific example material with generic, fictitious examples — green

Every fixture, test document, tool example and document now uses an invented
kitchen-and-baking handbook series, written in this repository. The package's
behaviour is unchanged; src/ changes are comments and help text only.

- Generated fixtures are regenerated from their generators. Their structural
  counts are identical before and after: elements, images, rows, cells,
  headings, bookmarks and the witness inventory's per-document totals. The
  image-inbox and accounting documents are renamed kapittel-84-*.
- tools/okf_accounting_gate.py: the two options that named one real corpus
  each are replaced by a generic, repeatable --corpus PATH with no default.
  Row 5 compares the PDF pair alone. Gate verdict unchanged: RED rows 2, 3, 6.
- tools/okf_witness.py: the STS JSON reader for one publisher's delivery is
  removed, along with its three twins and five tests. The mutation harness
  loses W09.
- docs/: 13 dated reports that documented runs on a retired reference corpus
  are removed, and 40 are neutralized. Dead links are removed, and no new
  dangling path is introduced.
- The synthetic MCP-gate corpus and the residual probe words are neutral.

Valgt: keep the `okf quality --fasit` bar value (the measured fraction, one corpus) and
rewrite only its provenance, because the verdict stays unchanged and the
number names nothing.

Term check with the local list: 0 of 411 tracked files, 0 file names, 0 of
27 binary fixtures. Suite after git add: 2457 passed, 1 skipped. The base
tree had 2460 passed and 2 skipped; five tests went with the JSON reader and
four were added by the term check. ruff, ruff format and mypy --strict src/
are clean.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_xml_sts.py

@@ -3,9 +3,9 @@
 MEASURED OUTSIDE THIS REPOSITORY AND REPRODUCED HERE: the zip a publisher's
 own viewer delivers as "Html" holds 0 html, 1 xml and 109 images, and `okf
 build` on it gave **110 of 110 unreadable, 0 plans, exit 2** -- `.xml` was in
-neither extractor registry. The one xml file IS the whole product: R761
-Prosesskoden:2025, the same document round 12 met as a 701-page PDF, in
-NISO-STS form. It carries 7 715 `<sec>`, **2 761 of them with a `<title>`**,
+neither extractor registry. The one xml file IS the whole product: a large
+regulatory reference document, the same one round 12 met as a 701-page PDF,
+in NISO-STS form. It carries 7 715 `<sec>`, **2 761 of them with a `<title>`**,
 and a `<sec>`-nesting depth distribution of 28/118/500/1141/868/97/9 that is
 row-for-row identical to the fasit built from that same file.
 
@@ -111,7 +111,7 @@ def test_the_label_and_the_title_reach_the_proposer_as_one_heading() -> None:
 
 
 def test_a_lettered_point_is_a_body_line_and_never_a_heading() -> None:
-    """4 954 of R761's 7 715 `<sec>` are these. One heading each buries 2 761."""
+    """4 954 of the reference standard's 7 715 `<sec>` are these. One heading each buries 2 761."""
     text = extract.extract_text(STS.name, STS.read_bytes())
 
     assert "a) Betong skal ha fasthetsklasse B35." in text.split("\n")
@@ -154,8 +154,8 @@ def test_generic_xml_keeps_its_text_and_invents_no_structure() -> None:
     `<sec>`), so a document that is not STS is not guessed at."""
     text = extract.extract_text(GENERIC.name, GENERIC.read_bytes())
 
-    assert "Tunnelen er stengt for vedlikehold natt til fredag." in text
-    assert "Redusert framkommelighet" in text
+    assert "Kantinen er stengt for vedlikehold natt til fredag." in text
+    assert "Redusert åpningstid" in text
     assert not any(line.startswith("#") for line in text.split("\n"))
     assert propose.find_candidates(text) == []
 
@@ -232,7 +232,7 @@ def test_a_bundle_is_built_end_to_end_from_an_sts_document(tmp_path: Path) -> No
 def test_a_label_with_no_body_under_it_still_reaches_the_text() -> None:
     """A pending label must not be overwritten by the next one, or by a heading.
 
-    MEASURED ON R761, and it is exactly two characters: one `x)` marks a
+    MEASURED ON THE REFERENCE STANDARD, and it is exactly two characters: one `x)` marks a
     `<sec>` that carries a label and nothing else, and the label was held as a
     prefix for a body line that never came -- the next thing emitted was the
     following section's heading. Non-whitespace preservation was 1 283 393