Phase 1: In-process planning orchestrator

[christinoleo]

Create a custom agent or skill that automates the post-plan steps of Phase 1.

After the human signals the plan is ready, this runs sequentially:

1. /replan — score plan against original requirements
2. /plan-to-issues — convert plan into epic issue + task issues
3. Verify issues vs plan — checking the issues captured everything from the plan
4. Persist

Could be a .claude/agents/ definition or a .claude/skills/ skill. Needs access to: Skill tool (for /replan, /plan-to-issues), Bash (for gh commands), Read (for plan file).

Open question: should this be a skill the user invokes (/finalize-plan?) or a custom agent the user spawns?

Parent epic: #2

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Migrated from beads claude-watch-32b. Restated for gh issues (was bd-based).