fix: resolve permission fallback bug, remove debug code, and cleanup duplication

Logic Errors
------------
- Sidebar: fix permissions fallback so a user with no permissions gets
  zero access instead of falling back to the full nav list
  (user?.permissions ?? [] instead of ?? navSections.flatMap(...))
- carMaintanance.service / UseCarsMaintanance: add pagination to the
  maintenance records fetch instead of loading the entire list at once
- api.ts: redact sensitive fields (password, token) before logging the
  request body in console.debug, to avoid leaking credentials/PII

Code Flow Problems
-------------------
- OrderFormModal: remove leftover console.log/debug statements and the
  redundant onClick handler on the submit button
- auth: remove the unused src/service/auth.service.ts (axios) and keep
  only src/services/auth.service.ts (fetch); fix useAuth.ts import path
  from

src/Components/User/UserDetailModal.tsx

@@ -77,20 +77,20 @@ export function UserDetailModal({ userId, onClose }: UserDetailModalProps) {
 
   // fetch user details on mount
   useEffect(() => {
-    let cancelled = false;
-    (async () => {
-      try {
-        const token = getStoredToken();
-        const res   = await userService.getById(userId, token);
-        if (!cancelled) setUser(res.data);
-      } catch {
-        if (!cancelled) setError("تعذّر تحميل بيانات المستخدم. يرجى المحاولة لاحقاً.");
-      } finally {
-        if (!cancelled) setLoading(false);
-      }
-    })();
-    return () => { cancelled = true; };
-  }, [userId]);
+  let cancelled = false;
+  (async () => {
+    try {
+      const token = getStoredToken();
+      const data = await userService.getById(userId, token);
+      if (!cancelled) setUser(data);
+    } catch {
+      if (!cancelled) setError("تعذّر تحميل بيانات المستخدم. يرجى المحاولة لاحقاً.");
+    } finally {
+      if (!cancelled) setLoading(false);
+    }
+  })();
+  return () => { cancelled = true; };
+}, [userId]);
 
   // ── helpers ───────────────────────────────────────────────────────────────
   const fmt = (iso?: string | null) =>