feat(athena): add intent parameter to prepare_council_prompt + wire hook into plugin system + update exports

src/hooks/index.ts

@@ -35,6 +35,7 @@ export { createAutoSlashCommandHook } from "./auto-slash-command";
 export { createEditErrorRecoveryHook } from "./edit-error-recovery";
 
 export { createPrometheusMdOnlyHook } from "./prometheus-md-only";
+export { createAthenaSisyphusOnlyHook } from "./athena-sisyphus-only";
 export { createSisyphusJuniorNotepadHook } from "./sisyphus-junior-notepad";
 export { createTaskResumeInfoHook } from "./task-resume-info";
 export { createStartWorkHook } from "./start-work";