v3.0: The Cascade — end-to-end goals-to-tasks flow

Add /project and /monthly skills to complete the cascade chain from
3-year vision through daily tasks. Add agent memory, model hints,
agent team workflows, and cascade context surfacing across all skills.

New skills:
- /project (new, status, archive) — bridge between goals and daily tasks
- /monthly — roll up weekly reviews, check quarterly milestones

Agent upgrades:
- memory: project on all 4 agents for cross-session learning
- Agent team workflow in /weekly for parallel reviews

Skill enhancements:
- /daily: cascade context surfacing (ONE Big Thing, project next-actions)
- /weekly: project progress table, agent team coordination
- /goal-tracking: project-aware progress, orphan goal detection
- /onboard: auto-discover and summarize active projects
- model: sonnet on goal-tracking, obsidian-vault-ops, push, onboard

Infrastructure:
- session-init.sh surfaces priorities, project count, review staleness
- settings.json adds cp/mv permissions for project archiving

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

vault-template/.claude/settings.json

@@ -7,6 +7,8 @@
       "Bash(date:*)",
       "Bash(wc:*)",
       "Bash(find:*)",
+      "Bash(cp:*)",
+      "Bash(mv:*)",
       "Read(*)",
       "Write(Daily Notes/**)",
       "Write(Goals/**)",