Add ThinkingPart and MessageInfoExtended local interfaces Replace 3 as any casts with proper unknown-to-typed casts Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
- Split 25+ index.ts files into hook.ts + extracted modules - Rename all catch-all utils.ts/helpers.ts to domain-specific names - Split src/tools/lsp/ into ~15 focused modules - Split src/tools/delegate-task/ into ~18 focused modules - Separate shared types from implementation - 155 files changed, 60+ new files created - All typecheck clean, 61 tests pass