* chore: Standard exclude comment format to denote flags, options, etc. that shouldn't be promoted in docs
* chore: exclude internal flags
* chore: Add docs:exclude comments for internal CLI flags, fix linting
- Note internal options that should be ignored by `docs audit` and authors.
- Remove character escaping from GitHub callouts and placeholders
Lint config changes:
- Add explicit exclude for content/**/*.md in lint-markdown-instructions
- Exclude all markdown files from Prettier formatting
Fixes issue where remark-lint was auto-formatting content files and
escaping special characters like [!Note] callouts and underscores.
* fix: cleanup escaping