Add shared parseBooleanValue()/isTruthyEnvValue() and apply across CLI, gateway, memory, and live-test flags for consistent env handling.
Introduce route-first fast paths, lazy subcommand registration, and deferred plugin loading to reduce CLI startup overhead.
Centralize config validation via ensureConfigReady() and add config caching/deferred shell env fallback for fewer IO passes.
Harden logger initialization/imports and add focused tests for argv, boolean parsing, frontmatter, and CLI subcommands.
The frontmatter parser was using a simple line-by-line regex that only
captured single-line key-value pairs. This meant multi-line metadata
blocks (as used by bundled hooks) were not parsed correctly.
Changes:
- Add extractMultiLineValue() to handle indented continuation lines
- Use JSON5 instead of JSON.parse() to support trailing commas
- Add comprehensive test coverage for frontmatter parsing
Fixes#1113
