style: add braces to if statements for consistency

Consolidate if-let chain formatting by adding missing braces throughout the
project. This improves readability and ensures consistency across the
codebase.

Co-Authored-By: fiddlerwoaroof/git-smart-commit (gemma-4-31B-it-UD-Q4_K_XL.gguf)

src/ui/app.rs

@@ -374,12 +374,14 @@ impl App {
     }
 
     pub fn autosave_if_needed(&mut self) {
-        if self.dirty && self.last_autosave.elapsed() > Duration::from_secs(30)
-            && let Some(path) = &self.file_path.clone() {
-                let ap = persistence::autosave_path(path);
-                let _ = persistence::save(&self.model, &ap);
-                self.last_autosave = Instant::now();
-            }
+        if self.dirty
+            && self.last_autosave.elapsed() > Duration::from_secs(30)
+            && let Some(path) = &self.file_path.clone()
+        {
+            let ap = persistence::autosave_path(path);
+            let _ = persistence::save(&self.model, &ap);
+            self.last_autosave = Instant::now();
+        }
     }
 
     pub fn start_import_wizard(&mut self, json: serde_json::Value) {