Orchestrate an implementation loop around a single OpenSpec change.

Input: Optionally specify a change name. If omitted, you MUST ask the user which change to implement.

High-level flow

Select the change
Ask delivery mode (commit vs PR) - do this immediately after selecting the change, not after implementation
Load OpenSpec context
Triage: determine execution strategy - classify as inline, single-implementor, or per-task based on change size and complexity
Determine remaining top-level tasks
Implement tasks using the chosen strategy
Run validation and review at the cadence determined by the strategy
Aggregate findings and fix; repeat until clean
Push the branch to origin
Commit mode: Watch GitHub Actions on the pushed branch/commit PR mode: Create a PR, then use the pr-monitoring-loop skill to monitor CI, reviews, comments, mergeability, and verify-openspec approval through watcher and delegate subagents
Report final outcome

openspec-implementation-loop