feat/thesis: temperature accumulation

[gknapp1]

Summary

Second stacked PR from the #179 split. This adds the thesis-specific surface-temperature workflow and the part-layer heat-accumulation features built on top of #189.

Related issues

• No related issues

Details

This PR adds a new temperature_surface_part thesis app for end-of-layer surface temperature output and wires it into component lookup, examples, and parser coverage.

It also adds shared thesis logic to initialize part-layer cases from either the latest prior temperature_surface_part outputs or a manual per-layer CSV file. That logic is used by the thesis part-layer apps that support initial temperature carry-over.

This PR also adds hybrid part/subpart heat accumulation through explicit data.build.part_layer_interfaces mappings. That introduces part/layer dependency utilities and interface-aware scheduling for temperature_surface_part so cross-part predecessor relationships can be modeled directly.

Impact

This expands thesis workflow capability substantially: new outputs, new carry-over initialization behavior, and new interface-aware accumulation rules for hybrid builds.

Risk level: Medium. The behavior change is significant within the thesis app family, but it is localized to thesis codepaths and backed by dedicated behavior and utility tests.

Architecture/docs: no update needed - this adds a new thesis application and extends existing thesis/workflow utility hooks without changing overall component boundaries.

Testing strategy

Commit hooks passed during commit creation.

Covered by focused tests in CI-relevant areas:

• tests/test_temperature_surface_part.py
• tests/test_thesis_app_behavior.py
• tests/test_part_layer_utils.py
• tests/test_examples.py

Stack context:

• Base branch: stack/core-runtime
• PR branch: stack/thesis
• Stack position: 2 of 3

Checklist

• Architecture/docs impact considered. Updated ARCHITECTURE.md and/or
  developer docs where needed, or explained why not.