feat(diagnostics): unified 3-layer DiagnosticResult model (#204)

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "qwed"
-version = "5.1.2"
+version = "5.2.0"
 description = "The Deterministic Verification Protocol for AI - 11 verification engines for math, logic, code, SQL, facts, images, and more. Now with Agentic Security Guards."
 authors = [
     {name = "QWED Team", email = "rahul@qwedai.com"},

src/qwed_new/core/__init__.py

@@ -20,6 +20,14 @@
     wrap_error,
 )
 
+# Structured verification diagnostics (Issue #204)
+from .diagnostics import (
+    DiagnosticStatus,
+    DiagnosticResult,
+    AdvisoryCheck,
+    compute_proof_ref,
+)
+
 __all__ = [
     # Exceptions
     "QWEDError",
@@ -34,6 +42,11 @@
     "QWEDAPIError",
     "QWEDDependencyError",
     "wrap_error",
+    # Diagnostics (#204)
+    "DiagnosticStatus",
+    "DiagnosticResult",
+    "AdvisoryCheck",
+    "compute_proof_ref",
 ]
 
 # Lazy imports for verifiers (avoid circular imports and missing deps)