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>

src/llm_ingestion_okf/profiles.py

@@ -69,10 +69,10 @@ _FLOW_KEY = re.compile(r"^[A-Za-z_][A-Za-z0-9_-]*$")
 def yaml_block_plain(value: str) -> bool:
     """Whether `value` reads back verbatim as a plain scalar in a block mapping.
 
-    MEASURED ON R761 (K3-19): 217 of 2 024 first spec points carry `": "`, and
+    MEASURED ON A 701-PAGE REFERENCE STANDARD (K3-19): 217 of 2 024 first spec points carry `": "`, and
     PyYAML's `safe_load` refused exactly those 217 concepts' frontmatter. K3-22
     measured the same rule over every top-level value in eleven trees (the K2
-    default bundle, the R761 HTML and XML builds, a five-document project, this
+    default bundle, that standard's HTML and XML builds, a five-document project, this
     repository's examples and fixtures, and five consumer bundles): 0 refused
     that PyYAML returns verbatim, 0 kept that it does not. `" #"` is here
     although PyYAML does not refuse it: `title: Kap #3` loads, as `Kap`.
@@ -828,7 +828,7 @@ class IndexPolicy:
     #: only, after `entry_pattern` misses, so no emitted byte can move: every
     #: line this library writes still comes from `link_template`.
     #:
-    #: WHY IT EXISTS (vegnormal-okf, FUNN 1/2, 2026-09-08). OKF SPEC section 8
+    #: WHY IT EXISTS (a downstream consumer repository, FUNN 1/2, 2026-09-08). OKF SPEC section 8
     #: shows `* [Title](file.md) - description` in its own example and Google's
     #: generator writes it, while this library's segmented profiles write
     #: `- [Title](file.md)`. Measured, the star row parsed as `None` -- curated