audit-logger: a module that records every event on the mesh

The universal consumer from ADR 0046 — no privilege, just a module that
consumes '#' and writes each event to an append-only trail. Its whole code
is on('#', record); the manifest declares consumes:['#'] and a log dir.
Records module.*, mesh.* and node.* events alike (ADR 0047's namespace).

Type-checks against @novox/mesh-sdk; the handler test records a module
event and a node event with their metadata; the manifest parses against
the consumes-enabled schema.

Claude-Session: https://claude.ai/code/session_01LrgweAeERJYBg88c5cKDzF

modules/audit-logger/module.json

@@ -0,0 +1,15 @@
+{
+  "module": "audit-logger",
+  "version": "1",
+  "consumes": [
+    "#"
+  ],
+  "resources": [
+    {
+      "id": "log",
+      "type": "directory",
+      "path": "/var/lib/audit-logger",
+      "mode": "0700"
+    }
+  ]
+}