rename dmc12 inventory to cloudlorean and vault admin_password

- replace inventory/dmc12.yml with cloudlorean.yml (+ group_vars) and update
  all README/AGENTS call examples and the inventory table
- move admin_password hash into encrypted vault.yml; remove plaintext copies
  from roles/bootstrap/defaults and group_vars/external.yml
- bootstrap.yml loads vault.yml via vars_files (same pattern as monitoring)
- monitoring: PSK config/registration updates, docker role defaults,
  os-updates logging/reboot refinements, ansible.cfg/execute.sh tweaks
- add .project-wiki knowledge base and .github agent instructions

.project-wiki/templates/wiki-log.md

@@ -0,0 +1,33 @@
+# Wiki Log YYYY-MM
+
+This file is an append-only monthly audit trail of meaningful `.project-wiki/` updates for YYYY-MM.
+
+## [YYYY-MM-DD] mode | WLOG-YYYYMMDD-001 | Short Summary
+
+Date: YYYY-MM-DD
+Agent: TBD
+Mode: init | scan | update | sync | maintain | auto-post-implementation
+Trigger: TBD
+
+Changed wiki documents:
+- TBD
+
+Related source paths:
+- TBD
+
+Related IDs:
+- TBD
+
+Open question reconciliation:
+- Resolved: TBD
+- Partially resolved: TBD
+- Superseded: TBD
+- Dismissed: TBD
+- Duplicated: TBD
+- Newly created: TBD
+
+Summary:
+TBD
+
+Open questions:
+- TBD