feat: add state backends, governed adapters, and config resolution#1187

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Commits on May 27, 2026

docs(adrs): add governance cross-references + fix markdownlint

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docs(adrs): add ADRs 0033, 0034, 0035, 0039

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docs(adrs): add governance ADR series 0041-0052

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docs(adrs): add glossary and reader's guide

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chore(adrs): fix markdownlint across ADR corpus

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feat: add state backends, governed adapters, and config resolution

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fix(adapters,state): correct 3 MAJOR governance and transaction bugs

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fix(adapters,state): address round-2 review findings — nested txn depth counter + dead log branch + deprecated get_event_loop

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fix(state): implement savepoints for nested transactions in StateDB

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fix(state): add transaction() context manager and deferred-commit helper

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fix(state): add SAVEPOINT support to SQLiteStore and PostgresStore nested transactions

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