Add override_state_values support to initialize_from

[Smitaambiger]

@skrawcz Related to #416

This PR adds an optional override_state_values parameter to ApplicationBuilder.initialize_from, allowing callers to override or augment state values when initializing from a persisted state.

Changes

• Added override_state_values parameter to initialize_from
• Stored override values on the builder
• Applied overrides after persisted state is loaded

How I tested this

• Reviewed the state initialization and persistence flow
• Verified that override values are applied after loading persisted state
• Confirmed existing behavior is unchanged when overrides are not provided

Notes

This change is backward-compatible and only applies when
override_state_values is explicitly passed.

[skrawcz]

@Smitaambiger cool. Can you add a unit test for this please?

[Smitaambiger]

@skrawcz
Thanks for the review!
Sure — I’ll add a unit test covering override_state_values and update the docs as needed.

[Smitaambiger]

@skrawcz
I’ve added a unit test covering override_state_values in initialize_from.

Please let me know if you’d like the test structured differently or placed elsewhere. Happy to update!

[skrawcz]

Thanks. Some minor clean up please.

[skrawcz]

@Smitaambiger your test also fails:

FAILED tests/core/test_application.py::test_initialize_from_applies_override_state_values - TypeError: Can't instantiate abstract class FakeStateLoader with abstract method list_app_ids

[Smitaambiger]

@skrawcz Thanks for the review!

I’ve addressed the requested cleanup and test failure:

• Implemented list_app_ids on FakeStateLoader to satisfy the abstract base class
• Updated the test to respect initialize_from entrypoint rules
• Simplified the override_state_values check as suggested
• Removed unnecessary inline imports

I verified the change locally with:

pytest tests/core/test_application.py -k override_state_values

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
======== 1 passed, 124 deselected, 2 warnings in 0.60s ========= 

[skrawcz]

Thanks @Smitaambiger for the contribution. Sorry it took a while to review.

In future to make things run a little faster, please run the pre-commit checks locally, as well as the tests.

[Smitaambiger]

Thanks @skrawcz for the review and for merging!
Appreciate the feedback — I’ll make sure to run pre-commit checks locally in future PRs.