feat: add gated Compose deploy and make inventory the host source of truth

Keep sanitized Compose sources in-repo with a confirmation-gated Ansible
playbook, add repo-wide validation, tighten runbook ownership/STOP/review
metadata, and archive stale research docs.

Co-authored-by: Cursor <cursoragent@cursor.com>

compose/vaultwarden/.env.example

@@ -0,0 +1,38 @@
+# .env.example — Vaultwarden (us2.wsvc.info, /opt/vaultwarden)
+#
+# Non-secret key reference ONLY. Real values live in the server-local .env
+# (never commit them). Copy the keys below into the server .env if a key is
+# missing; the compose file requires them via ${VAR} / env_file.
+
+# Service identity
+DOMAIN=https://auth.wsvc.info
+TEMPLATES_FOLDER=
+
+# Postgres (compose services vaultwarden / backup / pg / pgweb)
+DB_HOST=pg
+DB_PORT=5432
+DB_NAME=vaultwarden
+DB_USER=vaultwarden
+DB_PASS=
+
+# pgweb debug profile
+PGWEB_USER=
+PGWEB_PASS=
+PGWEB_DATABASE_URL=
+
+# SMTP (mailcow mx2.windy.me:587 starttls)
+SMTP_HOST=mx2.windy.me
+SMTP_PORT=587
+SMTP_SECURITY=starttls
+SMTP_USERNAME=
+SMTP_PASSWORD=
+SMTP_FROM=
+HELO_NAME=
+
+# Admin console
+ADMIN_TOKEN=
+
+# Runtime
+UID=1000
+GID=1000
+IP_HEADER=X-Forwarded-For