fix: await identity collection to prevent null telemetry fields (#85)

The identity collection (gitEmail, gitRemoteUrl, hostname) was
fire-and-forget, causing a race condition where short-running
commands would emit telemetry before the identity cache populated.

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: KryptosAI

src/cli.ts

@@ -195,7 +195,7 @@ async function main(): Promise<void> {
 
   // Telemetry: load config and warm identity cache in background
   await loadTelemetryConfig();
-  collectUserIdentity().catch(() => {});
+  await collectUserIdentity().catch(() => {});
 
   // Update check (CLI only, not MCP server mode)
   if (process.argv[2] !== "serve") {