Replace console.debug/log/warn calls in model router, retry, and daemon
startup with a structured logger that respects a configurable log_level.
Default level is 'info', suppressing verbose fallback debug messages in
the TUI while keeping them available via config when needed.
- Add src/logger.ts with debug/info/warn/error/silent levels
- Wire log_level into config schema (default: 'info')
- Initialize log level in both daemon and TUI startup paths
- Convert all console.debug in router.ts and retry.ts to logger.debug
- Convert console.log/warn in daemon/models.ts to logger.info/warn
- README: features list, Gmail config section with field reference and
template variables, hook examples, architecture tree, CLI description
- CHANGELOG: new Added entries for both features
- SOUL.md: file.patch in capabilities list
- config/default.yaml: file.patch in confirm hooks, commented-out
automation section with cron, webhooks, gmail, heartbeat examples
Add comments explaining:
- Auto same-model fallback via GitHub Models for Anthropic tiers
- Inline per-tier fallback blocks
- The full fallback order (primary → auto → inline → global chain)
- local_providers map for named providers in fallback_chain
- Usage examples for both patterns