raspberry_pi_nextcloud.sh 1276 -> 163, root_bl9000.sh 1116 -> 211,
lookup_docs.sh 942 -> 165. Sixteen new libs.
lookup_python was one 300-line function; its keyword-to-anchor mapping
became python_keyword_doc, emitting result and desc tab-separated so the
caller keeps its control flow.
bl9000_mtkclient had cd X; work; cd - with three return paths.
install_mtkclient became a subshell; extract_boot_with_mtkclient could
not, since it exports BOOT_IMG - so the venv check moved before the cd,
the cd is guarded, and the restores use a saved $PWD.
Four more unguarded cd calls fixed, and a third instance of the lib
chaining bug flattened. lookup_docs.sh had no SCRIPT_DIR at all.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011w2Pj4Ek3ZNMQVYcFHgXDY
