Add GET /enhance/prompts: recent distinct Enhance prompts

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/enhance/mod.rs

@@ -21,5 +21,7 @@ pub mod template;
 #[cfg(test)]
 mod integration_tests;
 
-pub use handlers::{approve, discard, get_job, get_templates, list_jobs, preview, submit};
+pub use handlers::{
+    approve, discard, get_job, get_templates, list_jobs, preview, recent_prompts, submit,
+};
 pub use service::EnhanceService;