close-slice

name	close-slice
description	Closes the active execution slice with validation and records durable closure metadata while invoking shared owner-completion reconciliation.

Close Slice

Use this skill when implementation is complete and you want to close an execution slice cleanly.

Responsibilities

1. Resolve the target slice through guide-execution.
2. Validate that the slice is ready to close.
3. Close the slice without deleting the original artifacts.
4. Optionally record explicit invalidation or supersession relations as part of closure.

Source of Truth Rules

• Keep the original slice artifacts intact. close-slice records closure only; any later cleanup or archival is a separate explicit maintenance step.
• Treat <slice_dir>/README.md, <slice_dir>/registry.json, and <slice_path>/.slice-meta.json as the canonical closure records.

Artifact Ownership

close-slice owns closure metadata updates and relation-bearing slice closure. After closure, it invokes the shared workflow_state.owner_completion hook so feature and subfeature completion can be reconciled from traceability plus closed execution slices.

guide-execution should route into closure only after execution review is complete; it should not replace close-slice by mutating closure state directly outside normal registry/status tooling.

Workflow

1. Resolve the target slice explicitly, or use the active slice.
2. Run manage_execution.py validate-slice.
3. If the slice is not already closed, close it through tooling.
4. Run shared owner-completion reconciliation for planning owners linked to the closed slice.
5. If relation-bearing closure is requested:
   • record explicit slice relations such as supersedes or replaces_partially
   • require explicit impact confirmation unless forced
   • run relation auditing through the execution registry tooling
6. Return the closed slice outcome, owner-sync results, and the retained source artifacts.

Tooling

# Close the active slice
sirius close-slice

# Close a slice while explicitly confirming that it supersedes an older one
sirius close-slice --slice "<slice-id-or-path>" --relate supersedes "<old-slice-id-or-path>" --confirm-impact

# Close a slice with a partial replacement relation scoped to one story/requirement
sirius close-slice --slice "<slice-id-or-path>" --relate replaces_partially "<old-slice-id-or-path>" --story-title "Story 2 - Legacy flow" --requirement-id FR-002 --selector "legacy checkout path" --confirm-impact

# Output JSON for downstream tooling
sirius close-slice --json

Use --confirm-impact when closure also changes the semantic validity of older execution slices. Use --force only for deliberate repair when the slice lifecycle is temporarily inconsistent and you have already verified the intent with the user.

If a repository later wants to archive or prune closed slices, treat that as a separate explicit maintenance workflow rather than part of slice closure.