Typed helpers for agent meta (Claude Code options, disallowed tools)

[elkraneo]

Right now, passing agent-specific meta (e.g. Claude Code options + disallowed tools) requires ad-hoc [String: AnyCodable] dictionaries. I’d love a typed helper to avoid stringly-typed payloads.

Suggestion: add a small meta builder, e.g.:

• ClaudeCodeMeta(options: .init(disallowedTools: ["Bash", "Task", "TodoWrite"]))
• ACPMeta.claudeCode(...) -> [String: AnyCodable]

This would make it clearer how to block built-in tools and standardize the payload shape.