v0.9.2

Added

• Add detached subagent support.
• Add [worker.*] blocks. Agents name a worker instead of a URL.
• Project level default worker.
• Add subs secret to print or rotate a minted secret.

Changed

• Consistent references in config and on the wire.
• A plugin reference can narrow its servers: plugins = [{ id = "x", servers = ["y"] }].
• Make workers a separate entity, not an agent property.
• The agent directory gives all of one tenant's declaration in one read.

Removed

• Remove signing_secret_env.
• Remove subs agents secret and subs agents rotate-secret; use subs secret worker.<id>.
• An agent's mcp list no longer names a plugin's server; use the plugin's servers.