Greptile Summary

Implemented early-exit fast paths for --version and --help to avoid loading heavy modules (config, plugins, channel registry) during trivial operations, reducing startup time from 17+ seconds to near-instant on low-powered devices.

Key changes:

• Added isRootVersionRequest() and isRootHelpRequest() functions in src/cli/argv.ts that properly distinguish root-level from subcommand-level flags and respect the -- terminator
• Modified src/entry.ts to check for version/help flags before importing run-main.js or heavy modules
• Converted channelOptions in src/cli/program/context.ts to lazy-loaded getters with caching
• Removed eager plugin registry loading from src/cli/channel-options.ts and added deprecation warning for OPENCLAW_EAGER_CHANNEL_OPTIONS
• Deferred command registry construction in src/cli/program/help.ts until help is actually configured

Testing:
Comprehensive test coverage added for the new argv helper functions, including edge cases for the -- terminator, root vs subcommand flags, and lazy loading behavior.

Confidence Score: 5/5

• This PR is safe to merge with no identified risks
• The implementation is solid with comprehensive test coverage for edge cases. The lazy loading pattern is correctly implemented with getters and caching. The fast-path logic properly handles the -- terminator and distinguishes between root-level and subcommand-level flags. No breaking changes or security concerns identified.
• No files require special attention

_{Last reviewed commit: 884e00f}

Superseeded by #30940 which had more changes, credit given for your contributions and support.