Capture current Ansible control plane state

Commit the accumulated infrastructure work that was living only in the
working tree: monitoring stack, emergency access/bot, gyro allocator,
grimmory, adguard, backup audit and the OpenCode agent definitions.

Also ignore Python bytecode, local archives and Nix/direnv artifacts.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GTocXkGUUazHdKKd3r9k71

.gitignore

@@ -6,3 +6,17 @@ passwd
 ansible/.venv/
 ansible/collections/
 ansible/generated/
+ansible/inventory/host_vars/gyro/vault.yml
+node_modules/
+
+# Python bytecode
+__pycache__/
+*.py[cod]
+
+# Local build artifacts
+*.tar.xz
+
+# Nix / direnv
+.direnv/
+result
+result-*