Merge remote-tracking branch 'origin/main' into merge-test/main-into-constraints

# Conflicts:
#	src/app/command_driver.rs
#	src/command.rs
#	src/ui/ribbon/mod.rs
#	src/ui/window/options.rs

src/app/config.rs

@@ -475,7 +475,16 @@ impl AppConfig {
 
     /// Persist the config as JSON. Best-effort; silent on unavailable or
     /// read-only storage.
+    ///
+    /// Does nothing under `cfg(test)`. The path is the developer's own
+    /// settings file, and the suite builds whole applications and changes
+    /// preferences on them — without this, running `cargo test` rewrites the
+    /// settings of whoever ran it.
     pub fn save(&self) {
+        if cfg!(test) {
+            return;
+        }
+
         #[cfg(not(target_arch = "wasm32"))]
         {
             let Some(path) = config_path() else { return };