feat: default port 443 for domain remotes, strip from display (v0.9.4)

- Domain-like --remote endpoints default to port 443; :443 is optional
- _normalize_endpoint strips :443 before storage in remotes.json
- _load_remotes normalises keys on load (backward compat migration)
- _remote_display_name omits :443 for domain endpoints
- _resolve_connect_endpoint adds :443 back for TCP connection

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

browser_cli/cli.py

@@ -187,8 +187,8 @@ def _print_version(ctx, param, value):
     help="Browser profile alias to target (required when multiple browsers are active).",
 )
 @click.option(
-    "--remote", default=None, metavar="HOST:PORT",
-    help="Connect to a remote browser exposed via 'browser-cli serve'.",
+    "--remote", default=None, metavar="HOST[:PORT]",
+    help="Connect to a remote browser exposed via 'browser-cli serve'. Domains default to port 443.",
 )
 @click.option(
     "--key", default=None, metavar="PATH",