Session Handoff [auto-2818]: Read nopep8 in Any Letter Case in the Prose Gate, for #2818 #2826

Next steps, in priority order

1. Fix The prose gate reads nopep8 in one letter case though pycodestyle reads any #2818: make TOOL_DIRECTIVE in .github/actions/prose-gate/prose_lint.py read nopep8 in any letter case, as pycodestyle does (its inline pattern is # no(?:qa|pep8)\b compiled with re.I), following the shape The prose gate reads noqa and cSpell directives in one letter case though their tools read any #2809 used for noqa and the CSpell spellings. Done looks like: is_comment_prose("NOPEP8") and is_comment_prose("NoPep8: E501") return false, with constructed test cases pinning both, and a mutation (reverting the fix) failing those tests.
2. Cover the trailing form the issue names in the same change: TRAILING_DIRECTIVE lists no nopep8, so prose followed by a trailing # nopep8 on the same line is not cut. Add it case-insensitively, matching how noqa is handled there, with a test case.
3. Drive the pull request to develop with Closes on promotion: #2818 in its body, then promote as far as the run's scope allows.

External blockers

None known at creation.

Internal dependencies

• Step 2 rides in step 1's pull request because both edit the same directive patterns in one file, and splitting them would make two review loops over the same lines.

State

• No branch, worktree, or pull request exists for this lane yet. Create the worktree per repo-worktree on feature/auto-2818, based on develop.
• The prose gate reads noqa and cSpell directives in one letter case though their tools read any #2809's fix (the pattern this one mirrors) is merged to develop and rides in the open develop -> main promotion. Re-read the current TOOL_DIRECTIVE and TRAILING_DIRECTIVE on develop before editing rather than trusting this description.

The parked decision queue

None. This lane has parked no decision.

What the last round did

Nothing. This lane was created by an unattended-handoff picker from the open backlog.

What not to repeat

• A comment opening on a tool's name stays exempt from the prose rules though it continues as prose #2805 records that a sentence-shape guard on tool-name exemptions broke real directives carrying a reason separator. This fix is a letter-case change to one directive name and needs no such guard, so keep it to case and the trailing form.

New learnings

None yet.