Add LogVault audit event schema

src/api/json/catalog.json

@@ -815,6 +815,16 @@
       "fileMatch": ["loki.yml", "loki.yaml"],
       "url": "https://www.schemastore.org/loki.json"
     },
+    {
+      "name": "LogVault Audit Event",
+      "description": "Audit trail event schema for LogVault\nhttps://logvault.eu/docs",
+      "fileMatch": [
+        "logvault-event.json",
+        "logvault-events.json",
+        "**/audit-events/*.json"
+      ],
+      "url": "https://json.schemastore.org/logvault-audit-event.json"
+    },
     {
       "name": "Azure Pipelines",
       "description": "Azure Pipelines YAML pipelines definition",

src/schemas/json/logvault-audit-event.json

@@ -0,0 +1,57 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$id": "https://json.schemastore.org/logvault-audit-event.json",
+  "title": "LogVault Audit Event",
+  "description": "Schema for audit trail events. LogVault provides compliance-ready audit logging for SaaS applications.\nhttps://logvault.eu/docs",
+  "type": "object",
+  "required": ["action", "actorId"],
+  "properties": {
+    "action": {
+      "type": "string",
+      "pattern": "^[a-z][a-z0-9_]*\\.[a-z][a-z0-9_.]*$",
+      "minLength": 3,
+      "maxLength": 100,
+      "description": "Event action in resource.action format (e.g., user.login, api_key.created)",
+      "examples": [
+        "user.login",
+        "user.created",
+        "api_key.created",
+        "team.member_invited",
+        "subscription.cancelled"
+      ]
+    },
+    "actorId": {
+      "type": "string",
+      "minLength": 1,
+      "maxLength": 255,
+      "description": "Identifier of the entity performing the action",
+      "examples": ["user_abc123", "service_billing", "system"]
+    },
+    "actorType": {
+      "type": "string",
+      "description": "Type of actor",
+      "default": "user",
+      "examples": ["user", "service", "system", "api_key"]
+    },
+    "targetId": {
+      "type": "string",
+      "maxLength": 255,
+      "description": "Identifier of the entity being acted upon"
+    },
+    "targetType": {
+      "type": "string",
+      "maxLength": 100,
+      "description": "Type of the target entity"
+    },
+    "metadata": {
+      "type": "object",
+      "description": "Additional event context",
+      "additionalProperties": true
+    },
+    "timestamp": {
+      "type": "string",
+      "format": "date-time",
+      "description": "ISO 8601 timestamp of the event"
+    }
+  }
+}

src/test/logvault-audit-event/logvault-audit-event.json

@@ -0,0 +1,12 @@
+{
+  "action": "user.login",
+  "actorId": "user_abc123",
+  "actorType": "user",
+  "metadata": {
+    "ip": "192.168.1.100",
+    "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7)"
+  },
+  "targetId": "session_xyz789",
+  "targetType": "session",
+  "timestamp": "2025-12-05T10:30:00Z"
+}