career-ops skill user_invocable + arguments fields don't register slash command #39005

The career-ops skill at .opencode/skills/career-ops/SKILL.md includes user_invocable: true and arguments: mode in its frontmatter, suggesting those fields should auto-register the skill as a /career-ops slash command:

name: career-ops
arguments: mode
user_invocable: true
user-invocable: true
argument-hint: "[scan | deep | pdf | ...]"

However, opencode does not recognize these fields — its skill schema only supports name, description, license, compatibility, and metadata. Skills are loaded only via the skill() tool and never auto-register as slash commands. The only way to create a slash command is via a .opencode/commands/*.md file.

The existing commands (career-ops-interview-prep.md, career-ops-interview-intel.md) follow the correct pattern — they are .opencode/commands/*.md files that call skill({ name: "career-ops" }). But the main /career-ops command file is missing.

Two possible paths:

1. (career-ops side, mostly already fixed) Create .opencode/commands/career-ops.md that accepts $ARGUMENTS and loads the skill, following the pattern of the existing sub-commands.
2. (opencode side) Either document that user_invocable, arguments, user-invocable, and argument-hint are not supported fields in the skill schema — or implement them if that was the intention.

Happy to open a PR for the documentation side if that is the preferred fix.