feat(framework): Persist and apply federation config overrides per run

[panh99]

Summary

Persist simulation federation config overrides on each run and include the merged federation config directly in app input payloads.

What changed

• store SimulationConfig overrides in linkstate for both in-memory and SQL backends
• add schema and migration support for federation_config_overrides on the run table
• merge federation defaults with per-run overrides before returning PullAppInputs
• read simulation runtime settings from PullAppInputs.federation_config instead of the legacy GetFederationOptions RPC
• remove the old federation-options retrieval path and update tests accordingly

[Copilot]

Pull request overview

This PR updates how simulation/federation configuration overrides are stored (from ConfigRecord/binary blobs to SimulationConfig/JSON) and exposes the effective config to app processes via PullAppInputs.

Changes:

• Persist per-run federation config overrides on the Run record and add LinkState.get_federation_config_overrides.
• Populate PullAppInputsResponse.federation_config by combining federation defaults with per-run overrides.
• Remove legacy “GetFederationOptions” usage from the simulation runner and adjust tests/schema accordingly.

Reviewed changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
framework/py/flwr/superlink/servicer/control/control_servicer_test.py	Updates run creation in tests to pass None for federation config overrides.
framework/py/flwr/superlink/servicer/control/control_servicer.py	Stores override_federation_config as run-level overrides (no ConfigRecord conversion).
framework/py/flwr/supercore/state/schema/linkstate_tables.py	Renames federation_options column to federation_config_overrides and changes storage type.
framework/py/flwr/supercore/state/schema/README.md	Updates ER diagram to reflect new column name/type.
framework/py/flwr/supercore/state/alembic/versions/rev_2026_03_18_add_run_type_to_run_table.py	Adds federation_config_overrides column and drops federation_options.
framework/py/flwr/simulation/app.py	Switches simulation runtime settings source to PullAppInputsResponse.federation_config.
framework/py/flwr/server/superlink/simulation/simulationio_servicer.py	Marks GetFederationOptions as not implemented.
framework/py/flwr/server/superlink/simulation/simulation_servicer_test.py	Updates simulation run creation to use SimulationConfig.
framework/py/flwr/server/superlink/serverappio/serverappio_servicer_test.py	Adjusts tests around federation options retrieval behavior.
framework/py/flwr/server/superlink/serverappio/serverappio_servicer.py	Merges federation defaults + run overrides and returns federation_config in PullAppInputs.
framework/py/flwr/server/superlink/linkstate/sql_linkstate.py	Stores/loads overrides as JSON; adds get_federation_config_overrides; removes legacy options method.
framework/py/flwr/server/superlink/linkstate/linkstate_test.py	Reworks tests to validate federation config overrides storage.
framework/py/flwr/server/superlink/linkstate/linkstate.py	Replaces abstract get_federation_options with get_federation_config_overrides.
framework/py/flwr/server/superlink/linkstate/in_memory_linkstate.py	Stores overrides per-run in memory; adds getter; removes legacy options store.
framework/py/flwr/server/superlink/fleet/grpc_rere/node_auth_server_interceptor_test.py	Updates run creation call signature.
framework/py/flwr/server/superlink/fleet/grpc_rere/fleet_servicer_test.py	Updates run creation call signature.
framework/py/flwr/server/grid/inmemory_grid_test.py	Updates run creation call signature.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.