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
The TUI was building its own ModelRouter with a duplicated client factory
that lacked auto same-model fallback, local_providers resolution, retry
config, and per-tier fallback logic. When Anthropic failed, it skipped
GitHub Models and fell straight to the local Ollama model.
Replace the duplicated ~50-line createClient + router setup in tui.ts
with a single call to the daemon's createModelRouter(), which already
handles all of these correctly. This removes ~50 lines of duplicated
code and ensures TUI and daemon have identical fallback behavior.
Previously these tools were only available in daemon mode. Now TUI mode
also registers web search tools (when credentials are configured) and
process management tools with proper cleanup on exit.
GitHubModelsClient now lazily resolves tokens at first API call. If no
token exists (env var, stored OAuth, or config), it triggers the OAuth
device flow automatically via an onLoginRequired callback wired in both
the TUI and daemon entry points.
Add a new 'github' model provider backed by the Copilot API
(api.githubcopilot.com), with OAuth device flow for authentication.
- New src/auth/github.ts: device flow login, token storage at
~/.config/flynn/auth.json with 0600 permissions
- New src/models/github.ts: OpenAI-compatible client with streaming,
tool calling, and Copilot-specific headers
- Add 'github' to provider enum in config schema
- Register provider in daemon factory and TUI client factory
- Refactor TUI to use provider-agnostic client factory (was hardcoded
to AnthropicClient for all tiers)
- Add /login command to TUI for interactive OAuth authorization
- Add Copilot model cost tracking entries
William Valentin