fix: prevent append with overlapping ids #92
Merged
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This pull request improves the handling of ID assignment and validation in the model container logic to prevent accidental ID overlaps when appending arrays. It also adds new unit tests to ensure correct behavior for overlapping and non-overlapping IDs.
ID assignment and validation improvements:
_id_counterfrom0to-1in the base container to better represent an uninitialized state and prevent collisions with valid IDs._update_id_countermethod to raise aValueErrorif any incoming array's minimum ID is less than or equal to the current_id_counter, preventing ID overlaps when appending arrays with prescribed IDs. The old check for only the maximum ID being less than the counter was removed.