fix(agentstudio): multiagent, output file download feature support - #181
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…d_id - agents.create/update accept `multiagent` (coordinator roster); Agent responses hydrate it into MultiAgentConfig / MultiAgentRosterEntry. - files.download() returns FileContent, a bytes subclass with write_to_file(); sync and async. - sessions.create accepts vault_ids (create-only per the protocol; the update path does not take it). - Message declares the top-level thread_id the server sends on every thread_* event, so subagent thread ids no longer fall into `extra`. Verified against the pre-maas backend: roster create / update / clear, plus the four server-side rejections (two selfs, >20 entries, Anthropic's string shorthand, unknown entry type), and a live coordinator delegation run emitting 7 thread_* events with the subagent result returned to the coordinator. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Review feedback: `dict(multiagent)` raises TypeError when the caller passes the MultiAgentConfig read off a response, which breaks the natural read-modify-write flow (update already requires the version, so callers retrieve first). Use the file's existing `_to_mapping` helper, already used for the deployment agent/schedule/resources params: it tries to_dict() first, then Mapping. Also drop the async `_open_content` note claiming the service may answer 302 with a pre-signed URL and that redirects are followed. Both halves are wrong: the protocol says §6.3 returns the byte stream directly and does not hand out pre-signed URLs in P1, and the httpx clients are built without follow_redirects (default False), so a 302 would silently yield zero bytes. The two docstrings now match, and match the code. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
luk384090-cloud
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August 25, 2026 03:44
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multiagent(coordinator roster); Agent responses hydrate it into MultiAgentConfig / MultiAgentRosterEntry.extra.Verified against the pre-maas backend: roster create / update / clear, plus the four server-side rejections (two selfs, >20 entries, Anthropic's string shorthand, unknown entry type), and a live coordinator delegation run emitting 7 thread_* events with the subagent result returned to the coordinator.
Description
[Describe what this PR does and why]
Related Issue: Fixes #[issue_number] or Relates to #[issue_number]
Security Considerations: [Check if API keys or sensitive credentials are exposed in code/logs]
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Component(s) Affected
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Testing
[How to test these changes]
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