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/assets/templates/stakeholder-map.md

@@ -0,0 +1,72 @@
+# Stakeholder Map: [Project Name]
+
+## Stakeholder Matrix
+
+| Stakeholder | Role | Interest Level | Influence | Information Needs |
+|-------------|------|----------------|-----------|-------------------|
+| [Name/Group] | [Role] | High/Medium/Low | High/Medium/Low | [What they need to know] |
+| [Name/Group] | [Role] | High/Medium/Low | High/Medium/Low | [What they need to know] |
+| [Name/Group] | [Role] | High/Medium/Low | High/Medium/Low | [What they need to know] |
+
+## Communication Plan by Stakeholder
+
+### [Stakeholder 1: Name/Role]
+
+| Aspect | Detail |
+|--------|--------|
+| **Needs** | [What information they need] |
+| **Frequency** | [How often: daily, weekly, at milestones] |
+| **Channel** | [Email, Basecamp, meeting, Slack] |
+| **Format** | [Brief update, detailed report, presentation] |
+| **Owner** | [Who communicates with them] |
+
+### [Stakeholder 2: Name/Role]
+
+| Aspect | Detail |
+|--------|--------|
+| **Needs** | [What information they need] |
+| **Frequency** | [How often] |
+| **Channel** | [Preferred channel] |
+| **Format** | [Format preference] |
+| **Owner** | [Who communicates] |
+
+### [Stakeholder 3: Name/Role]
+
+| Aspect | Detail |
+|--------|--------|
+| **Needs** | [What information they need] |
+| **Frequency** | [How often] |
+| **Channel** | [Preferred channel] |
+| **Format** | [Format preference] |
+| **Owner** | [Who communicates] |
+
+## RACI Matrix
+
+| Decision/Task | [Person 1] | [Person 2] | [Person 3] | [Person 4] |
+|---------------|------------|------------|------------|------------|
+| [Decision 1] | R | A | C | I |
+| [Decision 2] | I | R | A | C |
+| [Task 1] | R | I | I | A |
+
+**Legend**:
+- **R** = Responsible (does the work)
+- **A** = Accountable (final decision maker)
+- **C** = Consulted (input required)
+- **I** = Informed (kept updated)
+
+## Escalation Path
+
+1. **First Level**: [Name/Role] - for [types of issues]
+2. **Second Level**: [Name/Role] - if unresolved in [timeframe]
+3. **Executive**: [Name/Role] - for [critical blockers only]
+
+## Notes
+
+- [Any stakeholder-specific considerations]
+- [Political or relationship notes]
+- [Historical context if relevant]
+
+---
+
+*Created: [Date]*
+*Last updated: [Date]*