docs: sync addon docs with explicit external/internal service modes

Обновлена документация под новые аддоны (gitlab, redis, mongodb, kafka, kafka-ui, rabbitmq) и новую модель явного выбора зависимостей. Добавлены и унифицированы описания переключателей *_database_mode и *_redis_mode, обновлена таблица зависимостей аддонов, примеры конфигурации и список vault-секретов.

addons/redis/README.md

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+# redis
+
+Аддон устанавливает Redis в Kubernetes в режимах `standalone` или `replication` с PVC.
+
+```yaml
+addon_redis: true
+redis_architecture: "standalone"   # standalone | replication
+redis_storage_size: "8Gi"
+```
+
+Для кластера (replication):
+
+```yaml
+redis_architecture: "replication"
+redis_replica_count: 2
+```
+
+Установка:
+
+```bash
+make addon-redis
+```
+
+## Официальные ресурсы
+
+- Официальный сайт: [https://redis.io/](https://redis.io/)
+- Официальная документация: [https://redis.io/docs/latest/](https://redis.io/docs/latest/)
+- Версии Helm chart / ПО: [https://artifacthub.io/packages/helm/bitnami/redis](https://artifacthub.io/packages/helm/bitnami/redis)

addons/redis/playbook.yml

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+---
+- name: Install Redis
+  hosts: k3s_master[0]
+  gather_facts: false
+  become: true
+  roles:
+    - role: "{{ playbook_dir }}/role"

addons/redis/role/defaults/main.yml

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+---
+# Версия чарта Redis
+redis_version: "19.6.4"
+# Namespace
+redis_namespace: "redis"
+# Репозиторий Bitnami
+redis_chart_repo: "https://charts.bitnami.com/bitnami"
+
+# Архитектура: standalone | replication
+redis_architecture: "standalone"
+
+# Включить пароль (AUTH)
+redis_auth_enabled: true
+# Пароль Redis
+redis_auth_password: "{{ vault_redis_password | default('changeme-redis') }}"
+
+# StorageClass
+redis_storage_class: ""
+# Размер PVC
+redis_storage_size: "8Gi"
+
+# Реплики Redis (используется для replication)
+redis_replica_count: 2
+
+# Включить метрики
+redis_metrics_enabled: true

addons/redis/role/molecule/default/converge.yml

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+---
+- name: Converge redis defaults
+  hosts: all
+  gather_facts: false
+  tasks:
+    - ansible.builtin.copy:
+        dest: /tmp/redis-facts.yaml
+        mode: "0644"
+        content: |
+          redis_architecture: "standalone"
+          redis_replica_count: "2"

addons/redis/role/molecule/default/molecule.yml

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+---
+driver:
+  name: docker
+platforms:
+  - name: master01
+    image: geerlingguy/docker-ubuntu2204-ansible:latest
+    pre_build_image: true
+provisioner:
+  name: ansible
+  playbooks:
+    converge: converge.yml
+    verify: verify.yml
+verifier:
+  name: ansible

addons/redis/role/molecule/default/verify.yml

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+---
+- name: Verify redis defaults
+  hosts: all
+  gather_facts: false
+  tasks:
+    - ansible.builtin.slurp:
+        src: /tmp/redis-facts.yaml
+      register: facts_raw
+    - ansible.builtin.set_fact:
+        v: "{{ facts_raw.content | b64decode | from_yaml }}"
+    - ansible.builtin.assert:
+        that:
+          - v.redis_architecture == "standalone"

addons/redis/role/tasks/main.yml

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+---
+- name: Add Bitnami Helm repo
+  kubernetes.core.helm_repository:
+    name: bitnami
+    repo_url: "{{ redis_chart_repo }}"
+  environment:
+    KUBECONFIG: "{{ k3s_kubeconfig_path }}"
+
+- name: Deploy Redis via Helm
+  kubernetes.core.helm:
+    name: redis
+    chart_ref: bitnami/redis
+    chart_version: "{{ redis_version }}"
+    release_namespace: "{{ redis_namespace }}"
+    create_namespace: true
+    wait: true
+    timeout: "10m0s"
+    values:
+      architecture: "{{ redis_architecture }}"
+      auth:
+        enabled: "{{ redis_auth_enabled | bool }}"
+        password: "{{ redis_auth_password }}"
+      master:
+        persistence:
+          enabled: true
+          size: "{{ redis_storage_size }}"
+          storageClass: "{{ redis_storage_class }}"
+      replica:
+        replicaCount: "{{ redis_replica_count if redis_architecture == 'replication' else 0 }}"
+        persistence:
+          enabled: "{{ redis_architecture == 'replication' }}"
+          size: "{{ redis_storage_size }}"
+          storageClass: "{{ redis_storage_class }}"
+      metrics:
+        enabled: "{{ redis_metrics_enabled | bool }}"
+        serviceMonitor:
+          enabled: "{{ redis_metrics_enabled | bool and addon_prometheus_stack | default(false) | bool }}"
+  environment:
+    KUBECONFIG: "{{ k3s_kubeconfig_path }}"