Spawn agent team for features

Spawn multi-file feature agent team with ownership boundaries

Parallelizing multi-module feature work with non-overlapping ownership and quality gates.

• · feature description
• · module ownership rules

• · agent spawns with per-module tasks
• · quality gate hooks

• · Agent
• · Skill

• · Feature spans 3+ files
• · Module ownership rules defined

• · Ownership conflicts
• · Safety-critical zone modified without approval

• · File ownership rules (one TIC implementer, one eval implementer)
• · Safety-critical zone gating
• · Hook validation on team-idle