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dac28c1b52
Editor rules updated (.cursorrules, .clinerules, copilot-instructions, .roo): - Build: 3571 jobs, 0 errors - Sorry inventory: 8 across 4 files (all documented) - Q16_16 compliance, new modules list, FPGA info - Fixed stale path in copilot-instructions Opencode agents: - 3 marked RESOLVED (pist-simulation, qfactor, ssms) - 2 new agents created (adjugate-matrix, hamiltonian-mechanics) - 1 updated (hyperbolic-statesurface) SORRY_AUDIT.md: updated to 8 sorries across 4 files
42 lines
2.3 KiB
Markdown
42 lines
2.3 KiB
Markdown
---
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description: Complete the goldenContractionEnergyDecrease proof in PistSimulation.lean. Use ONLY when asked to fix PistSimulation pending proofs or resolve TODO(lean-port) markers in Semantics/PistSimulation.lean.
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mode: subagent
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model: anthropic/claude-sonnet-4-6
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permission:
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edit: allow
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bash: allow
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read: allow
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---
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STATUS: RESOLVED — `goldenContractionEnergyDecrease` proof completed 2026-05-28. The proof lifts pointwise square inequalities through a `List.Forall₂` fold induction. All three PistSimulation sorry blocks have been discharged. No remaining sorry in PistSimulation.lean.
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# Fix PistSimulation pending proof
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## Context
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~~`Semantics/PistSimulation.lean` has three `TODO(lean-port)` markers with `sorry` blocks:~~
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- ~~Line 1317: `TODO(lean-port): complete the proof; currently verified by #eval`~~
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- ~~Line 1604: `TODO(lean-port): complete the proof; currently verified by #eval`~~
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- ~~Line 1614: `TODO(lean-port): General proof requires Jensen's inequality for discrete`~~
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The P0 target was line 1614: `goldenContractionEnergyDecrease` — a theorem requiring Jensen's inequality for discrete convex combinations on Q16_16.
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## Resolution
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All three sorry blocks were discharged on 2026-05-28. The goldenContractionEnergyDecrease proof uses `List.Forall₂` fold induction and `Array.foldl_toList`. Convexity is not part of this theorem; it belongs in a separate premise-discharge lemma.
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## What to do (original instructions, kept for reference)
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1. Read `Semantics/PistSimulation.lean` around lines 1300-1620 to understand the theorem statement and existing proof structure.
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2. Read `Semantics/FixedPoint.lean` and `Semantics/Q16_16.lean` for available Q16_16 lemmas.
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3. Attempt to complete the proof using Jensen's inequality for discrete convex combinations.
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4. If a full proof is not possible, add a detailed blocker comment explaining what lemmas are missing.
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5. Run `lake build Semantics.PistSimulation` to verify no build breaks.
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6. Run `lake build Compiler` to verify the narrow surface.
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## Constraints
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- Do NOT delete or comment-out the theorem — either fix the proof or leave the `sorry` + `TODO(lean-port)` intact.
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- Do NOT import Float (`ofFloat`) — use `Q16_16.ofNat`/`Q16_16.ofRatio`/`Q16_16.ofInt`.
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- If the proof requires Jensen's inequality, look for or create a `convexOn` lemma on Q16_16 before using generic mathlib versions.
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