- Use `SlashCommand.splitNameRest` for cleaner command handling.
- Centralize `max_hint_slots` constant and add assertions.
- Refactor `Spinner` thread management and rendering code.
- Omit tool definitions when tool_choice is none to reduce request size.
- Skip tool argument stringification in low-verbosity modes.
- Optimize capToolOutput to avoid large memory copies during truncation.
- Introduce requireFrame and renderJson helpers in browser tools.
- Use a pre-computed tool names array for faster lookups.
Moves script logic to `browser/script/` for shared use. Implements
message rollback on API failure, caches environment variables, and
fixes a potential panic in the spinner.
- Relocate Command, Recorder, and Verifier to `src/browser/script/`
- Implement message rollback on API and synthesis failures in Agent
- Cache `LP_*` environment variables process-wide with mutex protection
- Fix potential panic in Spinner during backward clock jumps
- Improve Recorder to handle write failures and multi-line comments
- Update documentation regarding attachments and path safety
