Replace the over-engineered Mode interface/registry/detector pattern with
straightforward inline logic. There are only 2 modes (tag and agent) and
the complexity wasn't justified.
- Delete Mode interface, registry, and prepare pass-through modules
- Export prepareTagMode() and prepareAgentMode() as standalone functions
- Inline trigger checking and mode dispatch in run.ts/prepare.ts
- Change generatePrompt/createPrompt to take modeName string instead of Mode
- Remove dead code (extractGitHubContext, unused detector helpers)
- Update CLAUDE.md to reflect new architecture
* Add mode support
* update "as any" with proper "as unknwon as ModeName" casting
* Add documentation to README and registry.ts
* Add tests for differen event types, integration flows, and error conditions
* Clean up some tests
* Minor test fix
* Minor formatting test + switch from interface to type
* correct the order of mkdir call
* always configureGitAuth as there's already a fallback to handle null users by using the bot ID
* simplify registry setup
---------
Co-authored-by: km-anthropic <km-anthropic@users.noreply.github.com>
