feat(examples): aggiungi template documentazione Nuxt 4

- ci.yml: quality-gates condivisi con paths-ignore su content/**
- release.yml: docker-release + auto-release con needs
- maintenance.yml: schedule martedì 02:00 audit, 1° mese 03:00 outdated

refs #1 @25m

examples/documentazione/maintenance.yml

@@ -0,0 +1,36 @@
+# Copia in: .gitea/workflows/maintenance.yml
+# Trigger:
+#   - PR merged           → cleanup branch sorgente
+#   - Ogni martedì 02:00  → security audit vulnerabilità (settimanale)
+#   - Ogni 1° del mese    → controllo pacchetti obsoleti (mensile)
+#   - Manuale             → workflow_dispatch (esegue tutti i job di manutenzione)
+
+name: Maintenance
+
+on:
+  pull_request:
+    types: [closed]
+  schedule:
+    - cron: '0 2 * * 2'    # ogni martedì alle 02:00 → security audit
+    - cron: '0 3 1 * *'    # ogni 1° del mese alle 03:00 → outdated check
+  workflow_dispatch:
+
+jobs:
+  branch-cleanup:
+    if: gitea.event_name == 'pull_request' && gitea.event.pull_request.merged == true
+    uses: https://gitea.pzetatouch.it/devops/shared-actions/.gitea/workflows/branch-cleanup.yml@v1
+    secrets: inherit
+
+  dependency-audit:
+    if: >
+      gitea.event_name == 'workflow_dispatch' ||
+      (gitea.event_name == 'schedule' && gitea.event.schedule == '0 2 * * 2')
+    uses: https://gitea.pzetatouch.it/devops/shared-actions/.gitea/workflows/dependency-check.yml@v1
+    secrets: inherit
+
+  dependency-outdated:
+    if: >
+      gitea.event_name == 'workflow_dispatch' ||
+      (gitea.event_name == 'schedule' && gitea.event.schedule == '0 3 1 * *')
+    uses: https://gitea.pzetatouch.it/devops/shared-actions/.gitea/workflows/dependency-outdated.yml@v1
+    secrets: inherit