feat(core): wire up configurable search bar hint

espanso/src/cli/worker/engine/process/middleware/match_select.rs

@@ -50,7 +50,7 @@ impl<'a> MatchSelectorAdapter<'a> {
 }
 
 impl<'a> MatchSelector for MatchSelectorAdapter<'a> {
-  fn select(&self, matches_ids: &[i32]) -> Option<i32> {
+  fn select(&self, matches_ids: &[i32], is_search: bool) -> Option<i32> {
     let matches = self.match_provider.get_matches(&matches_ids);
     let search_items: Vec<SearchItem> = matches
       .into_iter()
@@ -66,7 +66,13 @@ impl<'a> MatchSelector for MatchSelectorAdapter<'a> {
       })
       .collect();
     
-    match self.search_ui.show(&search_items) {
+    let hint = if is_search {
+      Some("Search matches by content or trigger (or type > to see commands)")
+    } else {
+      None
+    };
+
+    match self.search_ui.show(&search_items, hint) {
       Ok(Some(selected_id)) => match selected_id.parse::<i32>() {
         Ok(id) => Some(id),
         Err(err) => {

espanso/src/gui/mod.rs

@@ -24,7 +24,7 @@ use anyhow::Result;
 pub mod modulo;
 
 pub trait SearchUI {
-  fn show(&self, items: &[SearchItem]) -> Result<Option<String>>;
+  fn show(&self, items: &[SearchItem], hint: Option<&str>) -> Result<Option<String>>;
 }
 
 #[derive(Debug)]

espanso/src/gui/modulo/search.rs

@@ -38,9 +38,10 @@ impl<'a> ModuloSearchUI<'a> {
 }
 
 impl<'a> SearchUI for ModuloSearchUI<'a> {
-  fn show(&self, items: &[SearchItem]) -> anyhow::Result<Option<String>> {
+  fn show(&self, items: &[SearchItem], hint: Option<&str>) -> anyhow::Result<Option<String>> {
     let modulo_config = ModuloSearchConfig {
       title: "espanso",
+      hint,
       items: convert_items(&items),
     };
 
@@ -67,6 +68,7 @@ impl<'a> SearchUI for ModuloSearchUI<'a> {
 #[derive(Debug, Serialize)]
 struct ModuloSearchConfig<'a> {
   title: &'a str,
+  hint: Option<&'a str>,
   items: Vec<ModuloSearchItemConfig<'a>>,
 }