refactor: wave 1 - extract leaf modules, rename catch-all files, split index.ts hooks

- 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

src/tools/lsp/index.ts

@@ -2,6 +2,8 @@ export * from "./types"
 export * from "./constants"
 export * from "./config"
 export * from "./client"
-export * from "./utils"
+export * from "./lsp-client-wrapper"
+export * from "./lsp-formatters"
+export * from "./workspace-edit"
 // NOTE: lsp_servers removed - duplicates OpenCode's built-in LspServers
 export { lsp_goto_definition, lsp_find_references, lsp_symbols, lsp_diagnostics, lsp_prepare_rename, lsp_rename } from "./tools"