[DEAD1nsane]

Issue for this PR

N/A — feature request.

Type of change

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

What does this PR do?

Adds opencode session prune <duration> for deleting old session families. It previews eligible families, requires confirmation unless --force is used, supports m/h/d/w durations, and protects shared, compacting, active, and recently-updated families. Candidates are revalidated immediately before deletion, and the new Session.listAll API provides complete project-scoped inventory.

How did you verify your code works?

• bun test session-prune.test.ts — 6 tests passed.
• Targeted Prettier and Oxlint checks passed.
• git diff --check passed.
• The full package typecheck could not complete in this Android/Termux environment because Node exhausted its heap; CI remains the authoritative check.

Screenshots / recordings

Not applicable; this is a CLI-only change.

Checklist

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

[github-actions]

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

[github-actions]

Thanks for updating your PR! It now meets our contributing guidelines. 👍

[DEAD1nsane]

{
"body": "This PR and #51255 are twins — the same session prune feature against different base branches (dev here, v2 there). To avoid maintainer confusion, I'm designating #51255 (v2) as the canonical PR: v2 is the active line and where this command is actually needed day-to-day.\n\nThis dev-targeted twin is being closed as superseded. The canonical PR has been refreshed onto current v2 (head 396e18cd, mergeable) and is awaiting review. Apologies for the noise — happy to reopen if a dev-based version is preferred instead.\n"
}