Add deployment pipeline, maintenance page and project config

- Makefile: install_dev, install_prod, migration/migrate commands
- docker-compose-dev: add Caddy and Bun services
- docker-compose-prod: remove exposed pgbouncer port
- Ansible: Caddy template with maintenance mode (503), vault, deploy playbook
- Gitea workflow: manual deploy to production
- Maintenance page (Neubrutalism style)
- LICENSE: proprietary license

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ansible/deploy-caddy.yml

@@ -0,0 +1,30 @@
+---
+- name: Deploy Caddy config for e-ticket
+  hosts: production
+  become: true
+  vars_files:
+    - vault.yml
+
+  tasks:
+    - name: Ensure Caddy sites directory exists
+      file:
+        path: /etc/caddy/sites
+        state: directory
+        owner: root
+        group: root
+        mode: "0755"
+
+    - name: Deploy Caddy config
+      template:
+        src: caddy.j2
+        dest: /etc/caddy/sites/e-ticket.conf
+        owner: root
+        group: root
+        mode: "0644"
+      notify: Reload Caddy
+
+  handlers:
+    - name: Reload Caddy
+      systemd:
+        name: caddy
+        state: reloaded