cx-cli Cross-cutting behaviors for all cx CLI commands. --- Update Notifications After running any cx command, check for update notices using the channels below (in priority order). If a newer version is available, finish answering the user's request first, then mention the update once at the end. An update notice always has two parts — binary upgrade and skills refresh. Offer both commands; don't mention only the version number or only the binary upgrade. 1. Primary — toon mode ( ) Commands with append a standalone trailing JSON line to stdout: Scan the last line of stdout for . When present…