Reorganize: Move all skills to skills/ folder

- Created skills/ directory
- Moved 272 skills to skills/ subfolder
- Kept agents/ at root level
- Kept installation scripts and docs at root level

Repository structure:
- skills/           - All 272 skills from skills.sh
- agents/           - Agent definitions
- *.sh, *.ps1       - Installation scripts
- README.md, etc.   - Documentation

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

skills/architecture/skill.md

@@ -0,0 +1,55 @@
+---
+name: architecture
+description: Architectural decision-making framework. Requirements analysis, trade-off evaluation, ADR documentation. Use when making architecture decisions or analyzing system design.
+allowed-tools: Read, Glob, Grep
+---
+
+# Architecture Decision Framework
+
+> "Requirements drive architecture. Trade-offs inform decisions. ADRs capture rationale."
+
+## 🎯 Selective Reading Rule
+
+**Read ONLY files relevant to the request!** Check the content map, find what you need.
+
+| File | Description | When to Read |
+|------|-------------|--------------|
+| `context-discovery.md` | Questions to ask, project classification | Starting architecture design |
+| `trade-off-analysis.md` | ADR templates, trade-off framework | Documenting decisions |
+| `pattern-selection.md` | Decision trees, anti-patterns | Choosing patterns |
+| `examples.md` | MVP, SaaS, Enterprise examples | Reference implementations |
+| `patterns-reference.md` | Quick lookup for patterns | Pattern comparison |
+
+---
+
+## 🔗 Related Skills
+
+| Skill | Use For |
+|-------|---------|
+| `@[skills/database-design]` | Database schema design |
+| `@[skills/api-patterns]` | API design patterns |
+| `@[skills/deployment-procedures]` | Deployment architecture |
+
+---
+
+## Core Principle
+
+**"Simplicity is the ultimate sophistication."**
+
+- Start simple
+- Add complexity ONLY when proven necessary
+- You can always add patterns later
+- Removing complexity is MUCH harder than adding it
+
+---
+
+## Validation Checklist
+
+Before finalizing architecture:
+
+- [ ] Requirements clearly understood
+- [ ] Constraints identified
+- [ ] Each decision has trade-off analysis
+- [ ] Simpler alternatives considered
+- [ ] ADRs written for significant decisions
+- [ ] Team expertise matches chosen patterns