Improved separation of concerns:
- getting-started: focused on USING skills (workflows, finding, reading)
- writing-skills: focused on WRITING skills (including cross-references)
The "Referencing Skills in Documentation" section belongs in writing-skills
because it's authoring guidance, not usage guidance. Added as subsection 5
under Claude Search Optimization (CSO).
Tested with subagents to verify improved clarity in both skills.
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