chore: move agents and skills to old2 folder

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

old2/skills/templates/background-skill.md

@@ -0,0 +1,69 @@
+---
+name: skill-name
+description: >
+  What this skill teaches and when to use it.
+  Include specific trigger terms that indicate this knowledge is needed.
+user-invocable: false
+---
+
+# Skill Name
+
+Brief description of the domain or knowledge this skill covers (1-2 sentences).
+
+## Core Concepts
+
+Fundamental ideas Claude needs to understand:
+- Key concept 1
+- Key concept 2
+- Key concept 3
+
+## Patterns and Templates
+
+Reusable structures and formats:
+
+### Pattern 1: Common Use Case
+
+\`\`\`
+Example code or structure
+\`\`\`
+
+### Pattern 2: Another Use Case
+
+\`\`\`
+Another example
+\`\`\`
+
+## Guidelines
+
+Rules and best practices:
+- Guideline 1
+- Guideline 2
+- Guideline 3
+
+## Examples
+
+### Example 1: Simple Case
+
+\`\`\`
+Concrete example showing the skill in action
+\`\`\`
+
+### Example 2: Complex Case
+
+\`\`\`
+More advanced example
+\`\`\`
+
+## Common Mistakes
+
+Pitfalls to avoid:
+- **Mistake 1**: Why it's wrong and what to do instead
+- **Mistake 2**: Why it's wrong and what to do instead
+
+## Reference
+
+Quick-reference tables or checklists:
+
+| Command | Purpose | Example |
+|---------|---------|---------|
+| ... | ... | ... |