Finalize Autoresearch

Turn a noisy autoresearch branch into clean, independent branches — one per logical change, each starting from the merge-base.

Step 1 — Analyze and Propose Groups

1. Read .auto/log.jsonl (legacy: autoresearch.jsonl). Filter to kept experiments only.
2. Read .auto/prompt.md (legacy: autoresearch.md) for context.
3. Expand all short commit hashes to full hashes: git rev-parse <short_hash>
4. Get the merge-base: git merge-base HEAD main
5. For each kept commit, get the diff stat (use $BASE..<commit> for the first, <prev_kept>..<commit> for subsequent).
6. Group kept commits into logical changesets:
   • Preserve application order. Group N comes before Group N+1.
   • No two groups may touch the same file. Each branch is applied to merge-base independently — overlapping files would conflict. If two groups touch the same file, merge them into one group.
   • Watch for cross-file dependencies. Each branch is independent, so if group 1 adds an API in api.js and group 2 calls it in parser.js, group 2's branch won't work in isolation. When proposing groups, flag dependencies: "group 2 depends on group 1 — review together." If the dependency is tight, merge the groups.
   • Keep each group small and focused. One idea, one theme per group.
   • Don't hardcode a count. Could be 2, could be 15.

Present the proposed grouping to the user: