better project structure

src/shared/settings.rs

@@ -0,0 +1,13 @@
+//! Typed access to the free-form `settings.*` map from the loaded config.
+
+use loco_rs::prelude::*;
+
+/// Look up a string-valued `settings.<key>` entry, returning `None` if config
+/// has no settings map, the key is missing, or the value is not a string.
+pub fn get<'a>(ctx: &'a AppContext, key: &str) -> Option<&'a str> {
+    ctx.config
+        .settings
+        .as_ref()
+        .and_then(|settings| settings.get(key))
+        .and_then(|value| value.as_str())
+}