feat: add anonymous usage telemetry via @vscode/extension-telemetry

- Add TelemetryService wrapping @vscode/extension-telemetry (Application Insights)
- Track: extension activation, server start/stop/error, commands, tunnel events
- No PII collected: prompts, file paths, API keys, IPs are never sent
- Error categorization strips message content, reports type only
- Automatically respects vscode telemetry.telemetryLevel — zero data sent if user opts out
- Update README to accurately disclose telemetry (replaces false 'no telemetry' claims)
- Mark @microsoft/applicationinsights-* as esbuild externals for correct bundling

Author: suhaibbinyounis

README.md

@@ -99,7 +99,7 @@ response = client.chat.completions.create(
 )
 ```
 
-> 🔒 **Your data stays local.** This extension runs entirely on your machine — no third-party servers, no telemetry, no data collection. The full source code is available on [GitHub](https://github.com/suhaibbinyounis/github-copilot-api-vscode) for you to audit.
+> 🔒 **Your prompts stay private.** All AI requests are processed entirely on your machine through VS Code's Copilot extension — your prompts and API keys never leave your machine. The extension collects anonymous, aggregate usage metrics (server start/stop events, command usage, error types) to help improve reliability. This telemetry is **fully optional** and respects your VS Code `telemetry.telemetryLevel` setting — set it to `off` to disable all data collection. The full source code is available on [GitHub](https://github.com/suhaibbinyounis/github-copilot-api-vscode) for you to audit.
 
 ---
 
@@ -271,8 +271,8 @@ For advanced options (TLS, IP allowlisting, audit logging), see [CONTRIBUTING.md
 This project is **100% free and open-source** under the [MIT License](LICENSE).
 
 - 🔍 **Full source code** available on [GitHub](https://github.com/suhaibbinyounis/github-copilot-api-vscode)
-- 🚫 **No telemetry** — zero data collection, no analytics, no tracking
-- 🔒 **Runs locally** — your prompts and API keys never leave your machine
+- 📊 **Anonymous telemetry** — collects aggregate extension health metrics only (no prompts, no file paths, no PII). Respects your VS Code `telemetry.telemetryLevel` setting — disable via `"telemetry.telemetryLevel": "off"` in VS Code settings.
+- 🔒 **Prompts stay local** — your AI requests and API keys never leave your machine
 - ✅ **Community-driven** — contributions welcome via [CONTRIBUTING.md](CONTRIBUTING.md)
 - 🛡️ **Security** — report vulnerabilities via [SECURITY.md](SECURITY.md)
 

dist/extension.js

@@ -35,7 +35,7 @@ async function main() {
 		sourcesContent: false,
 		platform: 'node',
 		outfile: 'dist/extension.js',
-		external: ['vscode'],
+		external: ['vscode', '@microsoft/applicationinsights-*'],
 		logLevel: 'silent',
 		// Performance optimizations
 		treeShaking: true,

dist/extension.js.map

@@ -3,7 +3,7 @@
   "displayName": "GitHub Copilot API Gateway",
   "description": "Free & open-source universal API Gateway for all VS Code language models. Auto-discovers GitHub Copilot, Gemini, Ollama & any AI extension — exposing them via local OpenAI, Anthropic, Google & Llama compatible APIs. One endpoint, every model. Use with Cursor, LangChain, Agents & more.",
   "icon": "media/icon.png",
-  "version": "2.12.4",
+  "version": "2.12.5",
   "author": {
     "name": "Suhaib Bin Younis",
     "email": "vscode@suhaib.in",
@@ -85,6 +85,7 @@
   },
   "dependencies": {
     "@modelcontextprotocol/sdk": "^1.29.0",
+    "@vscode/extension-telemetry": "^1.5.1",
     "cloudflared": "^0.7.1",
     "selfsigned": "^5.5.0",
     "ws": "^8.20.0"