[FIX] Reuse weights calculation instead of raising error on hash mismatch

[Leguark]

TL;DR

Improved weights caching behavior by recalculating weights when hash mismatch occurs instead of raising an error, and added automatic cache directory initialization.

What changed?

• Modified the behavior in interpolate_scalar_field to recalculate weights when a hash mismatch is detected instead of raising a "Cache is corrupted" error
• Added automatic initialization of the weights cache directory in the compute_model function by calling WeightCache.initialize_cache_dir()
• Added the necessary import for WeightCache in the model_api.py file

How to test?

1. Run a model with caching enabled
2. Modify the model parameters and run again to trigger a hash mismatch
3. Verify that the model recalculates weights instead of raising an error
4. Check that the cache directory is automatically created when running a model

Why make this change?

This change improves the user experience by making the caching system more robust. Instead of failing with an error when cached weights don't match the current model configuration, the system now gracefully recalculates the weights. Additionally, automatic cache directory initialization prevents errors that could occur if the directory doesn't exist.

[Leguark]

• [FIX] Reuse weights calculation instead of raising error on hash mismatch #27 👈 (View in Graphite)
• [ENH] Refactor dual contouring with parallel and sequential triangulation modules #26
• [ENH] Refactor dual contouring code with improved documentation and modular functions #25
• [REFACTOR] Use center grid for dual contouring instead of corners grid #24
• [FIX] Use timestamp for cache key instead of input parameters #23
• [FIX] Fix PyKeops tensor operations and ensure contiguous arrays #22
• [ENH] Add PyTorch backend support for dual contouring and octree operations #21
• [!!BUG] Chunking with faults were creating rogue voxels | GEN-13299 #20
• [ENH] Add transform support to meshes_to_subsurface method #19
• [FIX] Separate pykeops_enabled flag from use_pykeops for better control #18
• [ENH] Improve CG solver and add weights caching for better performance #17
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[Leguark]

Merge activity

• Sep 25, 8:42 AM UTC: A user started a stack merge that includes this pull request via Graphite.
• Sep 25, 8:50 AM UTC: Graphite rebased this pull request as part of a merge.
• Sep 25, 8:51 AM UTC: @Leguark merged this pull request with Graphite.