fix(tui): expose mention behavior in config

crates/tui/src/commands/config.rs

@@ -595,6 +595,11 @@ pub fn set_config_value(app: &mut App, key: &str, value: &str, persist: bool) ->
             app.composer.mention_completion_cache = None;
             app.needs_redraw = true;
         }
+        "mention_menu_behavior" | "mention_behavior" | "mention_menu" => {
+            app.mention_menu_behavior = settings.mention_menu_behavior.clone();
+            app.composer.mention_completion_cache = None;
+            app.needs_redraw = true;
+        }
         "mention_walk_depth" | "mention_depth" | "completions_walk_depth" => {
             app.mention_walk_depth = settings.mention_walk_depth;
             app.composer.mention_completion_cache = None;

crates/tui/src/config_ui.rs

@@ -68,6 +68,7 @@ pub struct SettingsSection {
     pub composer_vim_mode: ComposerVimModeValue,
     #[schemars(range(min = 0))]
     pub mention_menu_limit: usize,
+    pub mention_menu_behavior: MentionMenuBehaviorValue,
     #[schemars(range(min = 0))]
     pub mention_walk_depth: usize,
     pub transcript_spacing: TranscriptSpacingValue,
@@ -204,6 +205,13 @@ pub enum ComposerVimModeValue {
     Vim,
 }
 
+#[derive(Debug, Clone, Copy, Serialize, Deserialize, JsonSchema, PartialEq, Eq)]
+#[serde(rename_all = "snake_case")]
+pub enum MentionMenuBehaviorValue {
+    Fuzzy,
+    Browser,
+}
+
 #[derive(Debug, Clone, Copy, Serialize, Deserialize, JsonSchema, PartialEq, Eq)]
 #[serde(rename_all = "snake_case")]
 pub enum TranscriptSpacingValue {
@@ -332,6 +340,7 @@ pub fn build_document(app: &App, config: &Config) -> Result<ConfigUiDocument> {
             composer_border: settings.composer_border,
             composer_vim_mode: settings.composer_vim_mode.as_str().into(),
             mention_menu_limit: settings.mention_menu_limit,
+            mention_menu_behavior: settings.mention_menu_behavior.as_str().into(),
             mention_walk_depth: settings.mention_walk_depth,
             transcript_spacing: settings.transcript_spacing.as_str().into(),
             status_indicator: settings.status_indicator.as_str().into(),
@@ -513,6 +522,10 @@ pub fn apply_document(
             "mention_menu_limit",
             &doc.settings.mention_menu_limit.to_string(),
         ),
+        (
+            "mention_menu_behavior",
+            doc.settings.mention_menu_behavior.as_setting(),
+        ),
         (
             "mention_walk_depth",
             &doc.settings.mention_walk_depth.to_string(),
@@ -782,6 +795,24 @@ impl From<&str> for ComposerVimModeValue {
     }
 }
 
+impl MentionMenuBehaviorValue {
+    fn as_setting(self) -> &'static str {
+        match self {
+            Self::Fuzzy => "fuzzy",
+            Self::Browser => "browser",
+        }
+    }
+}
+
+impl From<&str> for MentionMenuBehaviorValue {
+    fn from(value: &str) -> Self {
+        match value.trim().to_ascii_lowercase().as_str() {
+            "browser" => Self::Browser,
+            _ => Self::Fuzzy,
+        }
+    }
+}
+
 impl TranscriptSpacingValue {
     fn as_setting(self) -> &'static str {
         match self {

crates/tui/src/tui/views/mod.rs

@@ -772,6 +772,13 @@ impl ConfigView {
                 editable: true,
                 scope: ConfigScope::Saved,
             },
+            ConfigRow {
+                section: ConfigSection::Composer,
+                key: "mention_menu_behavior".to_string(),
+                value: settings.mention_menu_behavior.clone(),
+                editable: true,
+                scope: ConfigScope::Saved,
+            },
             ConfigRow {
                 section: ConfigSection::Composer,
                 key: "mention_walk_depth".to_string(),