# 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.