references/sources.md credits atlassian-gitflow-tutorial with contributing
the `--no-ff` requirement on Gitflow supporting-branch merges to
references/merging.md, and merging.md:14 does carry that claim — but the
file's own source_keys listed only context7-git-htmldocs, so the chain was
one-directional.
Surfaced by repairing validate-provenance.sh's Contributing-files parser
in the same series; this skill was one of seven whose sources.md the old
parser could not read, so checks 4 and 5 had never run against it.
Refs #99
Description 612 -> 273 chars, body 1124 -> 457 words. Branch patterns,
operations, merging, comparison, and the orchestrator contract move to
references/.
Corrects rebase routing in four places: this skill sent rebase to
git-history, which carries no rebase content and disclaims it. Rebase is
git-commits'; cherry-pick and revert stay git-history's. Drops a Step 3
gate on a rebase flow this skill does not have.
