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- 03-04-SUMMARY.md: Plan complete — classifier signature, env var defaults, security mitigations T-03-17/18/19/21 all resolved; DOC-03, DOC-05 requirements completed - STATE.md: Advance to Plan 4/5 complete, add 5 key decisions from this plan - ROADMAP.md: Mark 03-04-PLAN.md complete (Wave 4) - REQUIREMENTS.md: Mark DOC-03 and DOC-05 as complete