[{"type":"thinking","thinking":"D-064 written. Now session closure: journal entry, STATE.md update, NGUYEN.md updates (session log; also the checklist should mention tier ii′ is now ACTIVE, not just post-publication), research.db registration (D-064), and commit.\n\nPer §8.4:\n1. journal/session-014.md\n2. D-064 registered in derivations/index.md + research.db\n3. NGUYEN.md: session log + checklist note (tier ii′ activated; the §5 phase 5 item 5.1 remaining work line should mention the redesign + discoveries). Also the ledger? No new result yet (D-064 is a derivation/design doc). The liCoeff defect is important enough to note in NGUYEN.md where liCoeff is described — maybe in the session log only for now.\n4. STATE.md LAST with NEXT ACTION.\n5. Commit.\n\nLet me check derivations/index.md format first.","signature":""},{"type":"text","text":"D-064 is written. Now session closure per §8.4: index registration, journal, STATE, NGUYEN.md, db, commit."},{"type":"tool_use","id":"Bash_54","name":"Bash","input":{"command":"tail -15 /d/Python/Quantum/research/derivations/index.md","description":"Check derivations index format"},"extra_content":null}]