Google Vertex appears to have changed Claude model naming for Opus 4.6.
Should be claude-opus-4-6@default instead of claude-opus-4-6@20260205
Its causing an error in opencode like this
Not Found: [{
"error": {
"code": 404,
"message": "Requested entity was not found.",
"status": "NOT_FOUND"
}
}
]
