fix: integrate todo-codebase-compaction hook properly

- Import PreemptiveCompactionOptions type
- Export hook from hooks/index.ts
- Add todo-codebase-compaction to HookNameSchema
- Use todoCodebaseCompactionInjector when hook is enabled

src/hooks/index.ts

@@ -29,3 +29,4 @@ export { createPrometheusMdOnlyHook } from "./prometheus-md-only";
 export { createTaskResumeInfoHook } from "./task-resume-info";
 export { createStartWorkHook } from "./start-work";
 export { createSisyphusOrchestratorHook } from "./sisyphus-orchestrator";
+export { createTodoCodebaseCompactionInjector, createCustomCompactionHook } from "./todo-codebase-compaction";