style(extract,propose): the formatter was never in the acceptance, so it went red unseen

`ruff format --check .` was clean on `fbad5b0` and red on `6ff18fd`: blank
lines around the new `strip_converter_attribute` and the new `member` closure.
Round 9's order named only `ruff check`, and STATE's "ruff clean" read wider
than what was measured -- an acceptance that names one of a tool's two gates
reports green for the gate it did not run.

Three hunks, blank lines only, no behaviour. From here the acceptance is BOTH
`ruff check` and `ruff format --check .`, both named in the report with the
version they ran under (0.15.22 here).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/llm_ingestion_okf/extract.py

@@ -753,7 +753,6 @@ _CONVERTER_ATTRIBUTE = re.compile(r"\s*\{#[A-Za-z0-9_.:-]+\}\s*$")
 _TABLE_LINE = "|"
 
 
-
 def strip_converter_attribute(title: str) -> str:
     """Remove a trailing pandoc attribute anchor from a heading's title.
 
@@ -776,6 +775,7 @@ def strip_converter_attribute(title: str) -> str:
     """
     return _CONVERTER_ATTRIBUTE.sub("", title)
 
+
 @dataclass(frozen=True)
 class SourceUnits:
     """Where in the ORIGINAL each stretch of the extracted text came from.

src/llm_ingestion_okf/propose.py

@@ -934,6 +934,7 @@ def _contents_run_positions(
     concept while its neighbours were not. What still bounds the rule is the run
     LENGTH, which is what the `CONTENTS_RUN` sweep bought and is unchanged.
     """
+
     def member(candidate: Candidate) -> bool:
         if candidate.rule == RULE_TABLE_BLOCK:
             return False