Repo-local skills shipped with the source tree

The repo carries a top-level skill entrypoint plus focused skills for documents, local PDFs, and admin/setup flows.

• SKILL.md: main entrypoint for the repo-local capability bundle
• skills/paperless-documents/SKILL.md: search, content reads, metadata edits, and file transfer flows
• skills/paperless-pdf/SKILL.md: local PDF text and metadata inspection
• skills/paperless-admin/SKILL.md: config, tags, and other catalog-management tasks