Add GET /enhance/prompts: recent distinct Enhance prompts

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

src/enhance/service.rs

@@ -18,8 +18,8 @@ use super::config::{EnhanceConfig, Loaded, PromptMode};
 use super::path_map::PathMap;
 use super::template::Template;
 use crate::database::enhance_dao::{
-    EnhanceJobDao, EnhanceJobRow, JobUpdate, STATUS_APPROVED, STATUS_EXPIRED, STATUS_FAILED,
-    STATUS_QUEUED, STATUS_READY, STATUS_RUNNING, STATUS_UNAVAILABLE,
+    EnhanceJobDao, EnhanceJobRow, JobUpdate, RecentPrompt, STATUS_APPROVED, STATUS_EXPIRED,
+    STATUS_FAILED, STATUS_QUEUED, STATUS_READY, STATUS_RUNNING, STATUS_UNAVAILABLE,
 };
 
 /// Short timeout for the `available` probe, so the templates call stays snappy
@@ -392,6 +392,19 @@ impl EnhanceService {
             .map_err(|e| EnhanceError::Internal(e.to_string()))
     }
 
+    /// Distinct recent prompts; DB only, so it works with ComfyUI down.
+    pub fn recent_prompts(
+        &self,
+        templates: Option<&[String]>,
+        limit: i64,
+    ) -> Result<Vec<RecentPrompt>, EnhanceError> {
+        self.dao
+            .lock()
+            .unwrap()
+            .recent_prompts(templates, limit)
+            .map_err(|e| EnhanceError::Internal(e.to_string()))
+    }
+
     /// Hide a job from the per-photo list. Nothing is deleted on ComfyUI:
     /// staged results vanish on its restart anyway.
     pub fn discard(&self, id: &str) -> Result<EnhanceJobRow, EnhanceError> {