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/skills/onboard/SKILL.md

@@ -2,6 +2,7 @@
 name: onboard
 description: Load CLAUDE.md context files from vault for comprehensive understanding. Discovers hierarchical context, recent notes, and project states. Use at start of session or when Claude needs full vault context.
 allowed-tools: Read, Glob, Grep
+model: sonnet
 user-invocable: true
 ---
 
@@ -35,7 +36,12 @@ Invoke with `/onboard` or ask Claude to learn about your vault.
    - Project-specific CLAUDE.md files
    - Recent daily notes for current state
 
-3. **Builds Understanding**
+3. **Scans Active Projects**
+   - Auto-discovers all `Projects/*/CLAUDE.md` files
+   - Extracts project name, phase, progress, and goal linkage
+   - Displays active project count and summary in onboard output
+
+4. **Builds Understanding**
    - Your personal mission/goals
    - Project structures and status
    - Workflow preferences
@@ -102,6 +108,16 @@ Automatically considers:
 - Current week's review
 - Recently modified projects
 
+### Project Summary
+When loading full context, include a project overview:
+```markdown
+### Active Projects (N)
+| Project | Phase | Progress | Goal |
+|---------|-------|----------|------|
+| [[ProjectA]] | Active | 60% | [[Goal 1]] |
+| [[ProjectB]] | Planning | 10% | [[Goal 3]] |
+```
+
 ### Selective Loading
 For focused assistance:
 ```
@@ -178,4 +194,6 @@ Works with:
 - All other skills (provides context)
 - `/daily` - Better daily planning with context
 - `/weekly` - Informed weekly reviews
+- `/monthly` - Monthly review with full context
+- `/project` - Project status overview
 - Goal tracking - Understand goal cascade