fix: Gitea Traefik routing and connection pool optimization

- Remove middleware reference from Gitea Traefik labels (caused routing issues)
- Optimize Gitea connection pool settings (MAX_IDLE_CONNS=30, authentication_timeout=180s)
- Add explicit service reference in Traefik labels
- Fix intermittent 504 timeouts by improving PostgreSQL connection handling

Fixes Gitea unreachability via git.michaelschiemer.de

deployment/ansible/roles/redis/tasks/main.yml

@@ -0,0 +1,49 @@
+---
+- name: Create Redis .env file from vault secrets
+  ansible.builtin.template:
+    src: redis.env.j2
+    dest: "{{ redis_stack_path }}/.env"
+    mode: '0600'
+  tags:
+    - redis
+    - config
+
+- name: Deploy Redis stack
+  community.docker.docker_compose_v2:
+    project_src: "{{ redis_stack_path }}"
+    state: present
+    pull: always
+  register: redis_compose_result
+  tags:
+    - redis
+    - deploy
+
+- name: Wait for Redis to be healthy
+  ansible.builtin.shell: |
+    docker compose -f {{ redis_stack_path }}/docker-compose.yml ps redis-stack | grep -Eiq "Up|running"
+  register: redis_state
+  changed_when: false
+  until: redis_state.rc == 0
+  retries: "{{ ((redis_wait_timeout | int) + (redis_wait_interval | int) - 1) // (redis_wait_interval | int) }}"
+  delay: "{{ redis_wait_interval | int }}"
+  failed_when: redis_state.rc != 0
+  tags:
+    - redis
+    - healthcheck
+
+- name: Test Redis connection
+  ansible.builtin.shell: |
+    docker exec redis-stack redis-cli ping
+  register: redis_ping
+  changed_when: false
+  failed_when: redis_ping.stdout != "PONG"
+  tags:
+    - redis
+    - healthcheck
+
+- name: Set Redis deployment facts
+  ansible.builtin.set_fact:
+    redis_stack_changed: "{{ redis_compose_result.changed }}"
+    redis_stack_healthy: "{{ redis_state.rc == 0 }}"
+  tags:
+    - redis