chore: tighten validation and runtime logging

* chore: tighten validation and runtime logging

* fix(i18n): localize new settings labels

libs/shared/interfaces/src/lib/dev-logger.util.ts

@@ -0,0 +1,22 @@
+export type DevLogFn = (...args: unknown[]) => void;
+
+function isDevLoggingEnabled(): boolean {
+    const global = globalThis as typeof globalThis & {
+        ngDevMode?: boolean;
+        process?: { env?: { NODE_ENV?: string } };
+    };
+
+    return (
+        global.ngDevMode !== false && global.process?.env?.NODE_ENV !== 'test'
+    );
+}
+
+export function createDevLogger(scope: string): DevLogFn {
+    const prefix = `[${scope}]`;
+
+    return (...args: unknown[]) => {
+        if (isDevLoggingEnabled()) {
+            console.debug(prefix, ...args);
+        }
+    };
+}