Sameen Karim b219e96fb5 rebase with preserve dates opt (#96) ...

* Add --committer-date-is-author-date flag to gh stack rebase

Introduce an opt-in `--committer-date-is-author-date` flag (with
`--preserve-dates` alias) for `gh stack rebase`. The flag is passed
through to every underlying `git rebase` invocation in the cascade,
keeping committer dates equal to author dates so that identical content
rebased onto an identical parent produces stable SHAs. This reduces
spurious force-push notifications and noisy review timelines, especially
in deep stacks where bottom branches get re-rebased on every merge.

Git layer changes:
- Add `RebaseOpts` struct with `CommitterDateIsAuthorDate` field to
  `internal/git/gitops.go`
- Update `Ops` interface, `defaultOps`, public wrappers, and
  `rebaseContinueOnce`/`tryAutoResolveRebase` helpers to accept and
  forward the flag
- Update `MockOps` to match the new signatures

Command layer changes:
- Register `--committer-date-is-author-date` and `--preserve-dates`
  flags on the cobra command in `cmd/rebase.go`
- Add `CommitterDateIsAuthorDate` to `cascadeRebaseOpts` and thread it
  to all `git.Rebase`/`git.RebaseOnto` calls in `cmd/utils.go`
- Persist the flag in `rebaseState` JSON so `--continue` resumes with
  the same behavior; pass it to `RebaseContinue` and subsequent cascade
  calls
- Update `internal/modify/apply.go` callers to pass zero-value
  `RebaseOpts{}`

Tests:
- Update all existing mock signatures in rebase, sync, and modify tests
- Add tests for flag passthrough, `--preserve-dates` alias, state
  round-trip, `--continue` flag restoration, and conflict state
  persistence

Docs:
- Update flag tables and examples in README.md and
  docs/src/content/docs/reference/cli.md

* clearer wording in docs and help text

2026-05-26 17:39:36 -04:00

..

git.go

rebase with preserve dates opt (#96)

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gitops_test.go

Initial release

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gitops.go

rebase with preserve dates opt (#96)

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mock_ops.go

rebase with preserve dates opt (#96)

2026-05-26 17:39:36 -04:00