Upload test/test_invariants.py with huggingface_hub

Merge duplicate tests: consolidate primary+alt pairs into single tests

Add 4 new invariant tests: zh parenthetical, ru parenthetical, country fill, state fill

[test] remove tests made redundant by script-purity checks

[iata-metro] add 6 invariants; clean names_en_alt and subdiv

Add 3 invariant tests; fix alt list quality issues

Add 5 invariant tests for alt name lists

Add 航空 to zh airport-word blocklist

Strict script-purity tests for name_zh and name_ru

Add script-purity tests for name_zh and name_ru

Add 5 more invariant tests

Add 6 more invariant tests; fix subdiv/region for overseas territories

Add 7 more invariant tests using iso_3166-1_alpha-2 and iso_3166-2

Use Language Rule lists from /home/llz/llz/doc/README.md

Restore hardcoded region lists, sourced from iso_3166-1_alpha-2

Load region→lang mapping from cterdam/iso_3166-1_alpha-2

Add invariant tests: coords, dedup, name fields, zh/ru quality

[iata-metro] remove hash invariant tests

Update test to load from HF Hub

Add invariant tests