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Research-Stack/6-Documentation/docs/safety/DECISION_LOG_2026_05_01.md

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Decision Log: AVM Calibration & Manifold Fusion

Date: 2026-05-01

Problem

The Sovereign Research Stack faced a "Semantic Collision" in its math core, with redundant and conflicting fixed-point implementations preventing the formal verification of the AVM bridge. Hardware parity was also unverified for the saturating arithmetic modules.

Actions Taken

  1. Deep Clean: Consolidated repository junk into archive/temp_junk/ and optimized .gitignore.
  2. Manifold Fusion: Merged Q16_16.lean (Saturating/Hardware) and FixedPoint.lean (Feature-rich) into a single, compliant module.
  3. AVM Calibration: Formalized the AVM spec with 7 mandatory requirements and verified the implementation in Lean 4.
  4. Hardware Parity: Validated the TangNano9KTopologyRouter.v via Verilog simulation, confirming bit-exact saturating math.
  5. Compliance Enforcement: Implemented scripts/validate_avm_compliance.py to prevent future float-drift.

Rationale

  • Saturating Math: Necessary for bit-exact hardware parity with FPGA DSP slices.
  • Single Source of Truth: Eliminates build-breaking import collisions.
  • Automated Validation: Ensures the stack remains "Sovereign" (float-free) as it scales.

Results

  • Build Status: 100% Success.
  • State: AVM is now CALIBRATED.
  • Lattice: LOCKED.