Add sol muse CLI for inspecting prompt configurations
New read-only CLI to browse and inspect all muse prompt files (system
and app-sourced). Supports list view grouped by schedule, detail view
for individual prompts, JSONL output, and filtering by schedule/source/
disabled status.
- think/muse_cli.py: list, detail, and JSONL output modes
- sol.py: register "muse" command in COMMANDS and GROUPS
- tests/test_muse_cli.py: 16 tests covering all modes and filters
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>