Implement deferred core utility parity APIs/tests and refresh tracking artifacts

tools/go-analyzer/types.go

@@ -58,6 +58,28 @@ type TestFunc struct {
 	GoLineCount  int
 	// FeatureName links this test to a feature by naming convention
 	FeatureName string
+	// Calls holds raw function/method calls extracted from the test body AST
+	Calls []CallInfo
+	// LinkedFeatures holds indices into the parent module's Features slice
+	LinkedFeatures []int
+	// BestFeatureIdx is the primary feature match index (-1 = none)
+	BestFeatureIdx int
+}
+
+// CallInfo represents a function or method call extracted from a test body.
+type CallInfo struct {
+	FuncName   string // direct call name: "newMemStore"
+	RecvOrPkg  string // selector receiver/pkg: "ms", "fmt", "t"
+	MethodName string // selector method: "StoreMsg", "Fatalf"
+	IsSelector bool   // true for X.Y() form
+}
+
+// callKey returns a deduplication key for this call.
+func (c CallInfo) callKey() string {
+	if c.IsSelector {
+		return c.RecvOrPkg + "." + c.MethodName
+	}
+	return c.FuncName
 }
 
 // Dependency represents a call relationship between two items.