v10.07 - Proactive subagent efficiency and lane templates

Summary

• add P099 proactive subagent efficiency and lane templates on top of the compact 18-rule runtime set
• teach proactive delegation triggers, work-shape topology selection, lane presets, leader context budgeting, and delegate-first aggregate-read handling
• add broad-objective decomposition, auto-next-lane continuation, lane-aware phase/task shaping, and governance/release-sync lane recognition
• runtime install, 18/18 source/runtime parity, and source/destination body sufficiency passed before release