fix(docs): make MkDocs strict build use docs dir

[carloshvp]

Summary

• change mkdocs.yml to use docs_dir: docs instead of the repository root
• update MkDocs nav, assets, llms.txt inputs, and edit links to be relative to docs/
• simplify the docs deploy workflow so it builds the committed MkDocs config directly
• fix the kill-switch tutorial link that depended on the old repo-root docs layout

Why

docs_dir: . causes current MkDocs strict builds to fail before page rendering because the docs directory is the parent of the config file. This removes the repo-root docs source workaround and makes a plain strict build valid.

mkdocs.yml was also normalized from CRLF to LF in this PR. That keeps git diff --check clean and avoids the sed/line-ending fragility that affected generated docs configs.

Fixes #364.

Validation

python -m mkdocs build --strict --site-dir /tmp/cmcp-site-check

Result: strict docs build passes locally.

[codecov-commenter]

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