The roadmap diagrams referenced issue numbers (#1, #8-#13, #43-#55) that no
longer exist on Codeberg: the GitHub to Codeberg migration reset this repo's
issue tracker, and those numbers were never re-created. scripts/check-roadmap.sh
existed only to keep that roadmap in sync with GitHub epic-labeled issues via
gh, which can't resolve a Codeberg/Forgejo repo anyway, so the gate had been a
silent no-op since the move. Removed the roadmap section, the gate script, its
two call sites, and its now-pointless rule doc, and pointed the remaining
work at the real, live issues (#4, #5, #6, #7, tracked under epic #8). Also
fixed two leftover Mihaela/PureYAML references in docs/RELEASE.md.
Mirror the shared Swift rules canon (rules-swift, commit 4ebb892) into
docs/rules-swift/ as a read-only reference alongside the repo's tailored
docs/rules/. PROVENANCE.md records the source, commit, and what was
included or excluded; the upstream repo's own VCS, CI, and lint tooling
is omitted as machinery rather than rule content.
Exclude the vendored tree from the style gate (scripts/check-style.sh)
and the pre-commit hook: the canon's enforcement docs quote the
forbidden attribution phrases to define them, the same reason the
repo's own enforcement files are already excluded.
