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- ARCHITECTURE.md: fix target conference AAAI→EMNLP - subagent-driven-development SKILL.md: fix remaining chs env reference - .env.example: remove EMBED_BACKEND/EMBED_MODEL (D7: belongs in YAML) - config/default.yaml: clarify as research experiment config source Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>