fix: resolve RedisCache array offset error and improve discovery diagnostics

- Fix RedisCache driver to handle MGET failures gracefully with fallback
- Add comprehensive discovery context comparison debug tools
- Identify root cause: WEB context discovery missing 166 items vs CLI
- WEB context missing RequestFactory class entirely (52 vs 69 commands)
- Improved exception handling with detailed binding diagnostics

deployment/infrastructure/roles/nginx-proxy/tasks/rate-limiting.yml

@@ -0,0 +1,15 @@
+---
+# Rate Limiting Configuration for Nginx
+
+- name: Create rate limiting configuration
+  template:
+    src: rate-limiting.conf.j2
+    dest: "{{ nginx_conf_d_path }}/rate-limiting.conf"
+    owner: root
+    group: root
+    mode: '0644'
+  notify: restart nginx
+  tags:
+    - nginx
+    - security
+    - rate-limit