Add 3 new skills (basecamp, brainstorming, plan-writing) and update agent model

- basecamp: Basecamp project management via MCP (todos, kanban, projects)
- brainstorming: General-purpose ideation with Anytype save
- plan-writing: Project planning with templates (kickoff, stakeholders, tasks, risks)
- Update agent model from GPT-4o to minimax-m2.1-free
- Update README with new skills

skill/plan-writing/SKILL.md

@@ -0,0 +1,165 @@
+---
+name: plan-writing
+description: "Transform ideas into comprehensive, actionable project plans with templates. Use when: (1) creating project kickoff documents, (2) structuring new projects, (3) building detailed task breakdowns, (4) documenting project scope and stakeholders, (5) setting up project for execution. Triggers: project plan, kickoff document, plan out, structure project, project setup, create plan for, what do I need to start."
+compatibility: opencode
+---
+
+# Plan Writing
+
+Transform brainstormed ideas into comprehensive, actionable project plans using modular templates.
+
+## Quick Reference
+
+| Project Type | Templates to Use |
+|--------------|------------------|
+| Solo, <2 weeks | project-brief, todo-structure |
+| Solo, >2 weeks | project-brief, todo-structure, risk-register |
+| Team, any size | project-kickoff, stakeholder-map, todo-structure, risk-register |
+
+## Process
+
+### 1. Intake
+
+Gather initial context:
+- What project are we planning?
+- Check for existing brainstorming output in `docs/brainstorms/`
+- If starting fresh, gather basic context first
+
+### 2. Scope Assessment
+
+Ask these questions (one at a time):
+
+1. **Solo or team project?**
+   - Solo → lighter documentation
+   - Team → need alignment docs (kickoff, stakeholders)
+
+2. **Rough duration estimate?**
+   - <2 weeks → skip risk register
+   - >2 weeks → include risk planning
+
+3. **Known deadline or flexible?**
+   - Hard deadline → prioritize milestone planning
+   - Flexible → focus on phased approach
+
+4. **Which PARA area does this belong to?** (optional)
+   - Helps categorization and later task-management integration
+
+### 3. Component Selection
+
+Based on scope, select appropriate templates:
+
+```
+"Based on [team project, 6 weeks], I'll include:
+✓ Project Kickoff (team alignment)
+✓ Stakeholder Map (communication planning)
+✓ Todo Structure (task breakdown)
+✓ Risk Register (duration >2 weeks)
+
+Shall I proceed with this structure?"
+```
+
+See [references/component-guide.md](references/component-guide.md) for selection logic.
+
+### 4. Draft Generation
+
+For each selected template:
+1. Load template from `assets/templates/`
+2. Fill with project-specific content
+3. Present each major section for validation
+4. Adjust based on feedback
+
+Work through templates in this order:
+1. Kickoff/Brief (establishes context)
+2. Stakeholders (who's involved)
+3. Todos (what needs doing)
+4. Risks (what could go wrong)
+
+### 5. Output
+
+Generate final documents:
+- Create `docs/plans/<project-name>/` directory
+- Write each component as separate file
+- Create `index.md` linking all components
+
+```
+docs/plans/<project-name>/
+├── index.md           # Links to all components
+├── kickoff.md         # or brief.md for solo projects
+├── stakeholders.md    # if team project
+├── tasks.md           # task breakdown
+├── risks.md           # if >2 weeks duration
+└── updates/           # for future progress updates
+    └── YYYY-MM-DD.md
+```
+
+### 6. Handoff (Optional)
+
+After plan is complete, offer next steps:
+
+> "Ready to create this project in Basecamp? I can:
+> - Create todo lists from the task structure
+> - Set up card table columns from phases
+> - Add initial cards/todos with due dates"
+
+This triggers the basecamp skill for execution.
+
+## Templates
+
+All templates in `assets/templates/`:
+
+| Template | Purpose | When to Include |
+|----------|---------|-----------------|
+| project-kickoff.md | Comprehensive 8-section kickoff | Team projects |
+| project-brief.md | 1-page summary | Solo or simple projects |
+| stakeholder-map.md | Who needs what, when | Team projects |
+| risk-register.md | Risks and mitigations | Projects >2 weeks |
+| todo-structure.md | Hierarchical task breakdown | Always |
+| progress-update.md | Status update template | For ongoing tracking |
+
+## PARA Integration (Optional)
+
+If user wants PARA integration:
+1. Prompt for Area assignment (from their defined Areas)
+2. Can trigger task-management skill to create Anytype entries
+3. Include Area reference in kickoff/brief document
+
+This is optional - not all users use PARA.
+
+## Integration with Other Skills
+
+| From | To plan-writing | Output |
+|------|-----------------|--------|
+| brainstorming | Decision/context | Informs kickoff scope |
+| plan-writing | → basecamp | Todo lists, cards |
+| plan-writing | → task-management | Anytype tasks (optional) |
+
+## Example Workflow
+
+```
+User: "Create a project plan for launching the Q2 training program"
+
+AI: "I'll help structure this project. First, a few questions:
+
+Is this a solo project or will others be involved?"
+
+User: "Team - 3 people"
+
+AI: "Duration estimate?
+a) Less than 2 weeks
+b) 2-4 weeks  
+c) More than a month"
+
+User: "B - about 3 weeks"
+
+AI: "Got it. For a 3-week team project, I'll include:
+✓ Project Kickoff (team alignment)
+✓ Stakeholder Map (communication)
+✓ Todo Structure (task breakdown)
+✓ Risk Register (3 weeks warrants this)
+
+Shall I proceed?"
+
+User: "Yes"
+
+AI: [Proceeds through each template, filling with project details]
+```