v8.9

Summary

• refine startup patch posture so greenfield baseline formation no longer implies patch by default
• add Waves 018-021 for the RULES compact plugin companion, including ephemeral handoff, session-scoped carry-forward, active review trigger, and reference-first review tightening
• replace legacy compact hook scripts with the new session-scoped compact lifecycle scripts

Compact plugin highlights

• exact-session compact routing with per-session state and proof files
• visible review-required compact navigator wording
• bounded reference-first additionalContext with file pointers instead of aggressive old-context replay
• bounded sessionstart-directive.json proof for emitted review directives

Governance sync

• update RULES design, changelog, TODO, phase, patch, and plugin docs to reflect the current compact plugin model
• narrow artifact-initiation and patch-governance wording for greenfield startup posture