Added extension functionality

extensions/general/example-logger/index.ts

@@ -0,0 +1,34 @@
+import type { Extension } from '@/lib/extensions/types'
+import type { EventPayload } from '@/lib/events/types'
+
+/**
+ * Example Logger Extension
+ *
+ * Minimal reference implementation that logs events to the console.
+ * Not wired into the loader by default — add to FIRST_PARTY_EXTENSIONS
+ * in lib/extensions/loader.ts to activate.
+ */
+export const exampleLoggerExtension: Extension = {
+  id: 'example-logger',
+  name: 'Example Logger',
+  version: '0.1.0',
+
+  eventHandlers: [
+    {
+      eventType: 'journal_entry.committed',
+      handler: async (payload: EventPayload<'journal_entry.committed'>) => {
+        console.log(
+          `[example-logger] Journal entry committed: ${payload.entry.voucher_series}${payload.entry.voucher_number} — ${payload.entry.description}`
+        )
+      },
+    },
+    {
+      eventType: 'document.uploaded',
+      handler: async (payload: EventPayload<'document.uploaded'>) => {
+        console.log(
+          `[example-logger] Document uploaded: ${payload.document.file_name} (${payload.document.sha256_hash.slice(0, 12)}…)`
+        )
+      },
+    },
+  ],
+}