move socket path into /tmp/.browser_cli subfolder with registry

browser_cli/cli.py

@@ -41,8 +41,16 @@ NATIVE_HOST_DIRS = {
 
 
 @click.group()
-def main():
+@click.option(
+    "--browser", default=None, metavar="ALIAS",
+    help="Browser profile alias to target (required when multiple browsers are active).",
+)
+@click.pass_context
+def main(ctx, browser):
     """Control your running browser from the terminal via a Chrome extension."""
+    ctx.ensure_object(dict)
+    if browser:
+        os.environ["BROWSER_CLI_PROFILE"] = browser
 
 
 # ── Sub-command groups ─────────────────────────────────────────────────────────