feat(auth): add interactive key policy editing

- Add auth policy to update existing authorized_keys allow policies locally or over remote serve.
- Support key lookup by public key or exact name, with safe, all, server-default, and category-based modes.
- Add questionary-powered interactive key selection and checkbox policy editing with current policy preselected.
- Show policy descriptions in auth keys output so each capability is easier to understand.
- Gate the new remote control command behind the existing keys policy category and include protocol routing/compat updates.
- Bump real-browser-cli to 0.16.2 and lock the new questionary dependency.
- Cover local, remote, validation, and policy-category behavior in tests.

browser_cli/constants.py

@@ -44,7 +44,7 @@ DEFAULT_TRANSPORT_THRESHOLD = 512
 # authenticated connection for multiple commands instead of re-handshaking.
 REMOTE_SESSION_IDLE_TIMEOUT = 30
 
-NO_ROUTE_COMMANDS = {"browser-cli.targets", "browser-cli.auth.keys", "browser-cli.auth.trust"}
+NO_ROUTE_COMMANDS = {"browser-cli.targets", "browser-cli.auth.keys", "browser-cli.auth.trust", "browser-cli.auth.policy"}
 GENTLE_MODES = ["auto", "normal", "gentle", "ultra"]
 
 PAGEABLE_COMMANDS = {