build: Add telemetry compiled output

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

dist/telemetry.js

@@ -0,0 +1,30 @@
+/**
+ * Telemetry for compressed tools usage tracking
+ * Logs to ~/.local/share/mcp/compressed-tools.jsonl
+ */
+import { appendFileSync, mkdirSync, existsSync } from "fs";
+import { homedir } from "os";
+import { join } from "path";
+const LOG_DIR = join(homedir(), ".local", "share", "mcp");
+const LOG_FILE = join(LOG_DIR, "compressed-tools.jsonl");
+// Ensure log directory exists
+if (!existsSync(LOG_DIR)) {
+    mkdirSync(LOG_DIR, { recursive: true });
+}
+export function logTelemetry(event) {
+    const entry = {
+        timestamp: new Date().toISOString(),
+        ...event,
+    };
+    try {
+        appendFileSync(LOG_FILE, JSON.stringify(entry) + "\n");
+    }
+    catch {
+        // Silently fail - telemetry should never break the tool
+    }
+}
+export function calculateCompressionRatio(original, compressed) {
+    if (original === 0)
+        return 0;
+    return Math.round((1 - compressed / original) * 100 * 10) / 10;
+}