feat(interactions): add previous_interaction_id for multi-turn conversations

[leseb]

What does this PR do?

Adds previous_interaction_id support to the Google Interactions API, enabling server-side conversation state for multi-turn interactions. Without this, every request starts fresh and ADK agents cannot maintain context across turns.

When a request includes previous_interaction_id, the server fetches the stored conversation history from the SQL backend, prepends it (including the model's prior response) to the new input, and calls inference with the full context. Both streaming and non-streaming responses are persisted for future chaining.

Key additions:

• InteractionsStore class (src/ogx/providers/utils/interactions/) following the ResponsesStore pattern with AuthorizedSqlStore and access control policy
• InteractionsConfig with SqlStoreReference for configurable SQL backend (SQLite/Postgres)
• _build_messages() method for conversation history reconstruction, supporting multi-hop chaining
• Updated Google Interactions API conformance score (39.0% → 40.2%)

Test Plan

55 unit tests pass (37 existing + 5 new previous_interaction_id + 13 shape/passthrough tests). All 39 pre-commit hooks pass.

# Unit tests
uv run pytest tests/unit/providers/inline/interactions/ -x --tb=short -q

# End-to-end validation with Google GenAI SDK
OLLAMA_URL=http://localhost:11434/v1 uv run --extra starter ogx stack run starter --port 8321
uv run scripts/test_interactions_api.py --base-url http://localhost:8321 --model ollama/llama3.2:3b

Test 5 validates conversation chaining: creates a first interaction establishing context ("My name is Alice"), then chains from it with previous_interaction_id and verifies the model remembers the name.

[mergify]

This pull request has merge conflicts that must be resolved before it can be merged. @leseb please rebase it. https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork

[github-actions]

✱ Stainless preview builds

This PR will update the llama-stack-client SDKs with the following commit message.

feat(interactions): add previous_interaction_id for multi-turn conversations

Edit this comment to update it. It will appear in the SDK's changelogs.

✅ llama-stack-client-go studio · conflict

Your SDK build resulted in a merge conflict between your custom code and the newly generated changes, but this did not represent a regression.

✅ llama-stack-client-openapi studio · code · diff

Your SDK build had at least one "warning" diagnostic, but this did not represent a regression.
generate ⚠️

✅ llama-stack-client-python studio · code · diff

Your SDK build had at least one "warning" diagnostic, but this did not represent a regression.
generate ⚠️ → build ⏭️ (prev: build ✅) → lint ⏭️ (prev: lint ✅) → test ✅

✅ llama-stack-client-node studio · code · diff

Your SDK build had at least one "warning" diagnostic, but this did not represent a regression.
generate ⚠️ → build ⏭️ (prev: build ✅) → lint ⏭️ (prev: lint ✅) → test ✅

---

This comment is auto-generated by GitHub Actions and is automatically kept up to date as you push.
If you push custom code to the preview branch, re-run this workflow to update the comment.
Last updated: 2026-05-06 03:26:24 UTC

[cdoern]

lgtm, one question on some removed tests

[cdoern]

nit, but what happened to run_tool_calling?