dictionaries: move to separate repo Asakiri/langdex-dictionaries (clean license separation)

dictionaries catalog: add authoritative scope (open/nc/locked) + rights from IA copyright audit

dictionaries: add data/dictionaries/catalog.parquet (under-resourced dictionary index) + card

langdex.duckdb: rebuild (compact) with etymology glottocode+coarse and kaikki ipa_norm

card: document etymology glottocode/coarse layer and ipa_norm

etymology: add resolved glottocode1/2+family1/2; kaikki_lexemes: add ipa_norm

langdex.duckdb: rebuild etymology table with coarse relationship layer

etymology: add deterministic coarse relationship layer (coarse_label/method/confidence), additive superset

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initial commit