docs: sync oh-my-claudecode-guide with oh-my-claudecode @ fae3765

docs: add obsidian vault pack

docs: fix mermaid subgraph labels for github

docs: sanitize public guide metadata

docs: add source-backed omc deep dives

docs: strengthen omc snapshot and obsidian note graph

docs: deepen omc learning paths and glossary

docs: rebuild omc frontdoor and obsidian safety notes

docs: expand omc visualization set

docs: add mermaid maps and obsidian hybrid pack

docs: rebuild omc guide frontdoor and learning flow

docs: sync oh-my-claudecode-guide with oh-my-claudecode @ fae3765

docs: sync oh-my-claudecode-guide with oh-my-claudecode @ fae3765

docs: sync oh-my-claudecode-guide with oh-my-claudecode @ fae3765