* perf(vcs): filter the Git log with git log instead of a background search index
The log built a persistent inverted index of every commit's message, authors and
changed paths in the background, with a progress bar above the commit list, and
walked trees itself to filter by path. Building it took minutes on large
repositories, and filters were slow until it finished.
- Text: plain text uses `git log --fixed-strings --grep` (with
`--regexp-ignore-case` unless Match Case is on); text of 4+ hex digits also
matches hash prefixes. Regex filters still match in-process.
- Paths: `git log -- :(literal)<paths>` replaces the in-process path walk and
its per-commit tree cache. It uses git's history simplification and, when the
repository has a changed-path commit-graph, its Bloom filters. Glob characters
in a path are literal.
- Authors match against the commit metadata cache.
- Removed the search tables, `index_log`, the `vcs_log_index` command and the
indexing progress bar. The commit metadata cache stays.
* docs(contributing): ask for screenshots only when a change alters what users see
Removing a feature together with its UI, copy-only and non-visual changes now
describe what was checked instead of attaching before/after screenshots.
* fix(vcs): match case-insensitive non-ASCII Git log text in process
git folds case only for ASCII under the C locale it runs with, so a
case-insensitive filter like "ärger" missed "Ärger". Such text is now
matched against commit messages directly. Path and text selection also
ignore log.showSignature and log.follow from the user's config.
Adds a PR template (linked issue, what and why, how it was verified, review focus), a minimal reproduction field on the bug form and required acceptance criteria on the feature form, and CONTRIBUTING.md with the issue and PR rules. A PR check labels needs-info and leaves one comment when the issue link or the verification section is missing; it only reads the title and description.
AGENTS.md is now tracked, with CLAUDE.md linking to it, and covers layout, rules, commands, the checks CI runs, pitfalls and parallel worktrees. The verify and issue-fix skills are shared under .agents/skills and linked from .claude/skills; the rest of .claude/ stays local.
l0ng-ai