telemetry: record isTTY (#8900)

Co-authored-by: Nate Moore <natemoo-re@users.noreply.github.com>

.changeset/cold-jokes-buy.md

@@ -0,0 +1,7 @@
+---
+"@astrojs/telemetry": patch
+---
+
+Track if the Astro CLI is running in a [`TTY`](nodejs.org/api/process.html#a-note-on-process-io) context. 
+
+This information helps us better understand scripted use of Astro vs. direct terminal use of Astro CLI by a user, especially the `astro dev` command.

packages/telemetry/src/system-info.ts

@@ -39,6 +39,7 @@ export type SystemInfo = {
 	cpuSpeed: number | null;
 	memoryInMb: number;
 	isDocker: boolean;
+	isTTY: boolean;
 	isWSL: boolean;
 	isCI: boolean;
 	ciName: string | null;
@@ -53,7 +54,7 @@ export function getSystemInfo(versions: { viteVersion: string; astroVersion: str
 
 	const cpus = os.cpus() || [];
 
-	meta = {
+	return {
 		// Version information
 		nodeVersion: process.version.replace(/^v?/, ''),
 		viteVersion: versions.viteVersion,
@@ -69,10 +70,9 @@ export function getSystemInfo(versions: { viteVersion: string; astroVersion: str
 		memoryInMb: Math.trunc(os.totalmem() / Math.pow(1024, 2)),
 		// Environment information
 		isDocker: isDocker(),
+		isTTY: process.stdout.isTTY,
 		isWSL,
 		isCI,
 		ciName,
 	};
-
-	return meta;
 }