refactor: ceske nazvy playbooku a roli bez diakritiky

Playbooky (novy nazev -> co dela):
- priprav-novy-server.yml (kompletni setup noveho serveru)
- nasad-sluzby.yml (nasadi Docker sluzby z docker-services/)
- aktualizuj-sluzby.yml (docker compose pull && up -d)
- zabezpec-server.yml (sysctl, auditd, unattended-upgrades)
- bootstrap-server.yml SMAZAN (duplicitni s priprav-novy-server)

Role (novy nazev -> co dela):
- zaklad (update + base baliky + timezone)
- uzivatel-deploy (vytvori deploy usera UID 1000)
- ssh-klice (authorized_keys deployment)
- docker (Docker Engine + Compose plugin) - ponechan anglicky (IT konvence)
- adresare (/home/deploy/{docker,scripts,backups,logs,...})
- firewall SMAZAN (nepouziva se)

Reference v playbooku aktualizovany na nove nazvy roli.
README.md kompletne prepracovan v cestine pro zacatecniky - vysvetluje
co Ansible je, jak nainstalovat, jak vytvorit inventory, jak spustit
playbook, jak overit ze vse funguje.

playbooks/aktualizuj-sluzby.yml

@@ -0,0 +1,22 @@
+---
+# Update vsech Docker sluzeb (docker compose pull plus up -d)
+#
+# Pouziti:
+#   ansible-playbook -i inventory.yml playbooks/update-services.yml
+#
+- name: Update Docker sluzby
+  hosts: homeservers
+  become: true
+
+  vars:
+    services_path: "/home/{{ docker_user }}/docker-services"
+    services: "{{ services_to_deploy | default([]) }}"
+
+  tasks:
+    - name: Pull a restart sluzeb
+      community.docker.docker_compose_v2:
+        project_src: "{{ services_path }}/{{ item }}"
+        state: present
+        pull: always
+      loop: "{{ services }}"
+      become_user: "{{ docker_user }}"