fix(opencode): scope --continue to the current worktree directory

[markjaquith]

Issue for this PR

Closes #25963

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

Fixes the bug where opencode --continue would continue the wrong session if you were using worktrees

Root-level git worktrees of the same repo all share an empty project-relative path (""), so listByProject filtered root sessions by project_id alone and --continue could resume another worktree's most recently updated session.

This fix sends the current absolute directory with the TUI session list query and, when the project-relative path is empty, filters sessions by that directory. It also adds a regression test with two real git worktrees asserting the feature worktree's list excludes the main worktree's root session.

How did you verify your code works?

• Integration tests (included in PR)

Screenshots / recordings

If this is a UI change, please include a screenshot or recording.

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

If you do not follow this template your PR will be automatically rejected.

[github-actions]

The following comment was made by an LLM, it may be inaccurate:

Based on my search, I found one potentially related PR that addresses similar session scoping concerns:

Related PR:

• fix(tui): scope non-git sessions by directory, not hierarchical path #31210 - fix(tui): scope non-git sessions by directory, not hierarchical path
  • This PR addresses a similar issue of scoping sessions by directory rather than path hierarchy, which relates to the worktree/directory scoping problem being fixed in PR fix(opencode): scope --continue to the current worktree directory #33521.

However, this is not a duplicate—it's a related but distinct fix. PR #31210 focuses on non-git sessions while PR #33521 specifically addresses git worktrees for the --continue command.

No duplicate PRs found

[github-actions]

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[github-actions]

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