feat(telemetry): exportTo writes events.jsonl + stats.md (#7 v0.2.3)

src/main/services/TelemetryService.ts

@@ -1,6 +1,7 @@
-import { mkdir, appendFile, readFile, readdir, unlink } from 'node:fs/promises';
+import { mkdir, appendFile, readFile, readdir, unlink, writeFile } from 'node:fs/promises';
 import { join } from 'node:path';
 import { validateEvent, TelemetryEvent } from './telemetryEvents.js';
+import { aggregateStats } from './telemetryStats.js';
 
 const KST_OFFSET_MS = 9 * 60 * 60 * 1000;
 
@@ -105,4 +106,14 @@ export class TelemetryService {
     }
     return events;
   }
+
+  async exportTo(outDir: string): Promise<{ eventCount: number }> {
+    const events = await this.readAllRecent();
+    await mkdir(outDir, { recursive: true });
+    const eventsContent = events.map((e) => JSON.stringify(e)).join('\n') + (events.length > 0 ? '\n' : '');
+    await writeFile(join(outDir, 'events.jsonl'), eventsContent, 'utf8');
+    const stats = aggregateStats(events, this.now());
+    await writeFile(join(outDir, 'stats.md'), stats.md, 'utf8');
+    return { eventCount: stats.eventCount };
+  }
 }