fix(remote): resolve remembered explicit-port endpoints

- Resolve bare remote hosts through the remote registry when one explicit port is stored.
- Preserve bare host behavior when no unique explicit-port registry match exists.
- Route requested remote targets through the new registry resolver.
- Add registry tests for unique and ambiguous explicit-port matches.
- Bump package and extension versions to 0.16.6.

browser_cli/client/messages.py

@@ -5,8 +5,8 @@ import uuid
 from typing import Any
 
 from browser_cli import transport
-from browser_cli.endpoints import _normalize_endpoint
 from browser_cli.errors import BrowserNotConnected
+from browser_cli.remote.registry import resolve_remote_endpoint
 
 def base_message(command: str, args: dict | None) -> dict:
   return {"id": str(uuid.uuid4()), "command": command, "args": args or {}}
@@ -14,7 +14,7 @@ def base_message(command: str, args: dict | None) -> dict:
 def requested_target(profile: str | None, remote: str | None) -> tuple[str | None, str | None]:
   requested_profile = profile or os.environ.get("BROWSER_CLI_PROFILE")
   remote_endpoint = remote or os.environ.get("BROWSER_CLI_REMOTE")
-  return requested_profile, _normalize_endpoint(remote_endpoint) if remote_endpoint else None
+  return requested_profile, resolve_remote_endpoint(remote_endpoint) if remote_endpoint else None
 
 def encode_payload(msg: dict) -> bytes:
   return json.dumps(msg).encode("utf-8")