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_parent_reaches_reader.py

@@ -42,7 +42,7 @@ CONTRACT = PROJECT_ROOT / "docs" / "consumption-contract.md"
 #: shell title -> the section its link and its excerpt name. The same pairs
 #: `tests/test_shell_parent.py` holds for the plan.
 LINKED = {
-    "Rekkverk": "Vedlikehold av utstyr",
+    "Gelender": "Vedlikehold av utstyr",
     "Utskifting": "Vedlikehold av utstyr",
     "Utskifting av list": "Utskifting av enkeltdeler",
     "Utskifting av stolpe": "Utskifting av enkeltdeler",
@@ -155,7 +155,7 @@ def test_a_pointer_resolves_inside_its_own_document(tmp_path: Path) -> None:
     other = (
         FIXTURE.read_bytes()
         .replace(b"Fikstur for arvet kontekst", b"Annen fikstur")
-        .replace(b"alt utstyr langs vegen", b"utstyr i tunnel")
+        .replace("alt utstyr i kjøkkenet".encode(), b"utstyr i kjeller")
     )
     bundle = _build(
         tmp_path,
@@ -164,7 +164,7 @@ def test_a_pointer_resolves_inside_its_own_document(tmp_path: Path) -> None:
         "--shell-parent",
     )
     payload = consume.build_payload(
-        bundle, question="Utskifting av list og stolpe i rekkverk", k=50
+        bundle, question="Utskifting av list og stolpe i gelender", k=50
     )
     carried = [e for e in payload["excerpts"] if "parent" in e]  # type: ignore[attr-defined]
     documents = {str(e["concept_id"]).split("/")[0] for e in carried}