Python: [wip]: Prototype foundry hosting workflow adapter

[Evan Mattson (moonbox3)]

An example of using a foundry hosted adapter for workflows

[github-actions]

Python Test Coverage Report •

File	Stmts	Miss	Cover	Missing
packages/foundry_hosting/agent_framework_foundry_hosting
_hosted_workflow_conversation.py	79	5	93%	47, 108, 132–133, 179
_responses.py	752	79	89%	191–194, 273–274, 288, 291–292, 340–341, 351, 388, 447, 461, 534, 539, 541, 617–618, 921, 934, 1403–1405, 1407, 1454–1455, 1457–1458, 1460–1461, 1463–1464, 1469, 1478, 1481–1483, 1485, 1495, 1499, 1512, 1557–1558, 1560, 1565–1569, 1571, 1578–1579, 1581–1582, 1588, 1590–1594, 1601, 1607, 1629, 1635, 1641, 1643, 1645–1648, 1656, 1658, 1709–1711, 1721–1722
TOTAL	40137	4485	88%

Python Unit Test Overview

Tests	Skipped	Failures	Errors	Time
8034	34 💤	0 ❌	0 🔥	2m 5s ⏱️

[Copilot]

Pull request overview

Prototypes a hosted workflow “conversation adapter” to manage how workflow checkpoints are restored/written across Responses turns, while ensuring per-request workflow agent state isolation.

Changes:

• Adds HostedWorkflowConversationAdapter / HostedWorkflowConversationTurn to centralize checkpoint context selection (fresh / previous_response_id / conversation_id) and pruning behavior.
• Updates ResponsesHostServer._handle_inner_workflow to use a per-turn workflow agent copy plus the new adapter for restore/write checkpoint storage decisions.
• Extends tests to validate that (a) fresh requests don’t share workflow state and (b) previous_response_id continues from the latest checkpoint; adds dedicated adapter unit tests.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
python/packages/foundry_hosting/tests/test_responses.py	Updates workflow-hosting tests to account for per-turn workflow agent copying and adds state-continuation/isolation coverage.
python/packages/foundry_hosting/tests/test_hosted_workflow_conversation.py	New focused tests for the hosted workflow conversation adapter’s checkpoint planning and pruning behavior.
python/packages/foundry_hosting/agent_framework_foundry_hosting/_responses.py	Refactors workflow handling to delegate checkpoint context logic to the new adapter and to run a per-turn copied workflow agent.
python/packages/foundry_hosting/agent_framework_foundry_hosting/_hosted_workflow_conversation.py	New adapter module implementing checkpoint storage selection, agent copying, restore, and checkpoint pruning for hosted workflow turns.

[github-actions]

Automated Code Review

Reviewers: 5 | Confidence: 89% | Result: All clear

Reviewed: Correctness, Security Reliability, Test Coverage, Failure Modes, Design Approach

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Automated review by moonbox3's agents

[Evan Mattson (moonbox3)]

Tao Chen (@TaoChenOSU) please use this as the basis of forming the proper abstractions around foundry-hosting and not low-level core workflow apis.