* refactor(cli): overhaul help output to match gh CLI style
- Add gh-style grouped help with CORE/RUNTIME/ADDITIONAL COMMANDS sections
- Use UPPERCASE section headers (USAGE, FLAGS, EXAMPLES, LEARN MORE)
- Format commands as "name: description" with automatic alignment
- Add ENVIRONMENT VARIABLES and EXAMPLES sections to root help
- Apply consistent templates to root, subcommand, and leaf commands
- Update descriptions from "Manage X" to "Work with X" for gh parity
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix(execenv): add explicit instruction for agents to always use multica CLI
Agents were using curl/wget to access Multica attachment URLs directly,
which fails due to authentication. Add a prominent "Important" section
to the generated CLAUDE.md template that explicitly prohibits direct
HTTP access and instructs agents to escalate missing CLI functionality
to their workspace owner.
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Co-authored-by: Devv <devv@Devvs-Mac-mini.local>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>