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# ifc-alignment curve plan Status: planned under `ALIGN-CURVE`. Last updated: 2026-08-19. Follow `AGENTS.md`; claim one task and record material decisions beneath it. ## Work queue - [ ] `ACURVE-H` - horizontal neutral curve - Proof: focused valid/invalid/edge fixture tests plus crate clippy. - [ ] `ACURVE-V` - vertical composition - Proof: focused valid/invalid/edge fixture tests plus crate clippy. - [ ] `ACURVE-CANT` - cant relation - Proof: focused valid/invalid/edge fixture tests plus crate clippy. - [ ] `ACURVE-PROV` - source side table - Proof: focused valid/invalid/edge fixture tests plus crate clippy. ## Completion log Append `TASK-ID - proof - material decision`; no long logs.