chore: release v4.0.0 - sync 550+ skills and restructure docs

skills/employment-contract-templates/SKILL.md

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+---
+name: employment-contract-templates
+description: Create employment contracts, offer letters, and HR policy documents following legal best practices. Use when drafting employment agreements, creating HR policies, or standardizing employment documentation.
+---
+
+# Employment Contract Templates
+
+Templates and patterns for creating legally sound employment documentation including contracts, offer letters, and HR policies.
+
+## Use this skill when
+
+- Drafting employment contracts
+- Creating offer letters
+- Writing employee handbooks
+- Developing HR policies
+- Standardizing employment documentation
+- Preparing onboarding documentation
+
+## Do not use this skill when
+
+- You need jurisdiction-specific legal advice
+- The task requires licensed counsel review
+- The request is unrelated to employment documentation
+
+## Instructions
+
+- Confirm jurisdiction, employment type, and required clauses.
+- Choose a document template and tailor role-specific terms.
+- Validate compensation, benefits, and compliance requirements.
+- Add signature, confidentiality, and IP assignment terms as needed.
+- If detailed templates are required, open `resources/implementation-playbook.md`.
+
+## Safety
+
+- These templates are not legal advice; consult qualified counsel before use.
+
+## Resources
+
+- `resources/implementation-playbook.md` for detailed templates and checklists.