Adding Justfile and helm chart

Justfile

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+set dotenv-load
+
+# Default: list available recipes
+default:
+    @just --list
+
+# Install Ansible Galaxy collections
+deps:
+    ansible-galaxy collection install -r requirements.yml
+
+# Set up the target host: install Docker and create the sovereign network
+setup-host:
+    ansible-playbook playbooks/site.yml --tags common
+
+# Run molecule tests for all roles
+test:
+    #!/usr/bin/env bash
+    set -euo pipefail
+    roles=(authentik common forgejo graylog headscale jitsi matrix minio nextcloud roundcube stalwart vaultwarden wazuh website)
+    failed=()
+    for role in "${roles[@]}"; do
+        echo "==> Testing role: $role"
+        if ! (cd roles/$role && molecule test); then
+            failed+=("$role")
+        fi
+    done
+    if [ ${#failed[@]} -gt 0 ]; then
+        echo "FAILED roles: ${failed[*]}"
+        exit 1
+    fi
+    echo "All molecule tests passed."
+
+# Run molecule tests for a single role: just test-role common
+test-role role:
+    cd roles/{{ role }} && molecule test
+
+# Update an existing deployment (pull latest config, re-run all roles)
+update:
+    ansible-playbook playbooks/site.yml
+
+# Update a single service: just update-service authentik
+update-service service:
+    ansible-playbook playbooks/site.yml --tags {{ service }}
+
+# Dry-run the full deployment
+check:
+    ansible-playbook playbooks/site.yml --check --diff
+
+# Lint the project
+lint:
+    ansible-lint