- git_commit_graph: use default_branch when rev is None
- git_commit_graph_react: use default_branch when rev is None
- git_commit_reflog: fall back to default_branch when HEAD is detached
Fixes errors:
- reference 'refs/heads/master' not found (graph-react endpoint)
- HEAD has no name (reflog endpoint when HEAD is detached)
The database stores short branch names (e.g., "main"), but git2's push_ref()
requires full reference names (e.g., "refs/heads/main"). This fixes all
service-layer endpoints to convert default_branch to the full ref format.
Fixed endpoints:
- git_readme: convert to refs/heads/{branch}
- git_commit_count: convert to refs/heads/{branch}
- git_contributors: convert to refs/heads/{branch}
- git_commit_log: convert to refs/heads/{branch}
- git_commit_walk: convert to refs/heads/{branch}
Resolves errors:
- Internal("the given reference name 'main' is not valid")
- Add #[serde(default)] to MergeAnalysisQuery.their_oid and MergeRefAnalysisQuery fields
since they come from path parameters, not query strings
- git_readme/git_commit_count/git_contributors: default to repo.default_branch
instead of HEAD to avoid errors when HEAD points to refs/heads/master but
the actual default branch is main
