feat(go-adk): add per-call session isolation for Agent tools#2202
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feat(go-adk): add per-call session isolation for Agent tools#2202dimetron wants to merge 1 commit into
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Add an isolateSessions flag to Agent tools so a declarative coordinator can fan out parallel, isolated sub-agent calls: when set, a fresh A2A context_id is minted per call instead of reusing one stable id for the tool's lifetime. Also replace the per-branch map[string]any tool return with a single typed remoteA2AResponse so subagent_session_id is reported on every outcome (success, input_required, failure, non-terminal, no-result). processResult now switches explicitly on the terminal task state and passes through child-provided structured failure fields with sub-agent task linkage. - v1alpha2 Tool.IsolateSessions (*bool, Agent-only via CEL) -> adk RemoteAgentConfig.IsolateSessions via the translator; Python config parity. - NewKAgentRemoteA2ATool takes a RemoteA2AToolConfig struct; isolated tools return an empty stamp id and add no subagentSessionIDs entry (UI links via the per-call id in the function_response instead). - Unit tests for contextIDForCall, every processResult branch, structured failure passthrough, and the translator wiring. Design: specs/a2a_sessions/EP_2153.md
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Add an isolateSessions flag to Agent tools so a declarative coordinator can fan out parallel, isolated sub-agent calls: when set, a fresh A2A context_id is minted per call instead of reusing one stable id for the tool's lifetime.
Also replace the per-branch map[string]any tool return with a single typed remoteA2AResponse so subagent_session_id is reported on every outcome (success, input_required, failure, non-terminal, no-result). processResult now switches explicitly on the terminal task state and passes through child-provided structured failure fields with sub-agent task linkage.
Design: specs/a2a_sessions/EP_2153.md