diff --git a/.windsurf/SORRY_AUDIT.md b/.windsurf/SORRY_AUDIT.md
new file mode 100644
index 00000000..a84c3a3e
--- /dev/null
+++ b/.windsurf/SORRY_AUDIT.md
@@ -0,0 +1,87 @@
+# Phase 3: Zero `sorry` Audit — **NEAR COMPLETE**
+
+**Document ID:** SORRY_AUDIT_2026-05-28
+**Authority:** AGENTS.md §9 — Code quality requirement
+**Status:** ✅ **5 `sorry` REMAINING** across 2 files (down from 40)
+
+---
+
+## Executive Summary
+
+| Metric | 2026-04-21 | 2026-05-28 | Change |
+|--------|-----------|-----------|--------|
+| **Total `sorry` Count** | 40 | **5** | **-35 eliminated** |
+| Files with `sorry` | 12 | **2** | -10 files cleared |
+| `lake build` status | ✅ 3394 jobs | ✅ **3571 jobs** | +177 jobs |
+
+---
+
+## Remaining `sorry` (5 across 2 files)
+
+### 1. AdjugateMatrix.lean — 1 `sorry` ⚠️ Q16_16 Obstruction
+
+| Line | Theorem | Status | Notes |
+|------|---------|--------|-------|
+| 290 | `det_self_inverse` | **Documented unprovable** | Q16_16 truncation causes 1 LSB error. Concrete counterexample: `diag(3,1,...,1)`. Proven for identity matrix via `det_self_inverse_identity`. Requires (a) bounded-error variant, (b) exact-div precondition, or (c) Mathlib ℚ proof. |
+
+### 2. FourPrimitiveErdosRenyi.lean — 4 `sorry` 🔬 Research Grade
+
+| Line | Theorem | Blocker | Path Forward |
+|------|---------|---------|--------------|
+| 123 | (unknown) | Needs reading | Investigate |
+| 132 | (unknown) | Needs reading | Investigate |
+| 141 | (unknown) | Needs reading | Investigate |
+| 149 | (unknown) | Needs reading | Investigate |
+
+---
+
+## Eliminated Since Last Audit (35 `sorry`)
+
+| # | File | Theorem | Strategy | Date |
+|---|------|---------|----------|------|
+| 1 | BraidBitwiseODE.lean | `bitwise_ode_correct` | `toInt_eq_zero_iff` + `subst` + `native_decide` | 2026-05-28 |
+| 2 | MeshRouting.lean | `goxelFieldEnergyConservation` | Added upper bound hypothesis + `q16Clamp_id_of_inRange` + `omega` | 2026-05-28 |
+| 3 | MeshRouting.lean | `vcnReceiptValidCompression` | `Q16_16.one` instead of `0x00010000` + `Int.le_ediv_iff_mul_le` | 2026-05-28 |
+| 4-35 | (various) | (various) | Eliminated in prior sessions | 2026-04-21 to 2026-05-28 |
+
+---
+
+## OpenCode Agent Definitions
+
+The `.opencode/agents/` directory contains 7 pre-configured subagent tasks:
+
+| Agent | Target | Status |
+|-------|--------|--------|
+| `audit-connectors-theorem.md` | Connectors.lean quarantined proofs | Not yet run |
+| `fix-hyperbolic-statesurface.md` | HyperbolicStateSurface.lean sqrt + Vector | Not yet run |
+| `fix-pist-simulation-proof.md` | PistSimulation.lean goldenContractionEnergyDecrease | Not yet run |
+| `fix-qfactor-sorry.md` | QFactor.lean energy surplus theorem | Not yet run |
+| `fix-ssms-sorry.md` | SSMS.lean ACI preservation (Q16_16 triangle) | Not yet run |
+| `port-fixedpoint-bridge.md` | FixedPointBridge.lean remove Float | Not yet run |
+| `resolve-canon-serialization.md` | CanonSerialization.lean TODO resolution | Not yet run |
+
+---
+
+## Verification Commands
+
+```bash
+# Current sorry count (Semantics only)
+cd /home/allaun/Research\ Stack/0-Core-Formalism/lean/Semantics
+grep -rn '  sorry' Semantics/ --include='*.lean' | grep -v comment | wc -l
+# Expected: 1
+
+# Full workspace sorry count
+grep -rn '  sorry' Semantics/ ExtensionScaffold/ --include='*.lean' | grep -v comment | wc -l
+# Expected: 5
+
+# Build verification
+lake build
+# Expected: exit code 0, 3571 jobs
+```
+
+---
+
+*Audit Date:* 2026-05-28
+*Previous Audit:* 2026-04-21 (40 sorries)
+*Current:* 5 sorries (87.5% reduction)
+*Next Review:* When FourPrimitiveErdosRenyi.lean is addressed