fix(managed): preserve native export coverage during verification (#9472)

src/domain/managed/managedNativeVerificationMatch.ts

@@ -20,12 +20,16 @@ export const collectNativeSymbols = (
   readonly symbols: readonly NativeSymbol[];
   readonly accepted: number;
   readonly unsupported: number;
+  readonly partialExports: boolean;
+  readonly exportLimitations: readonly string[];
   readonly moduleFormatsByEvidenceId: ReadonlyMap<string, string | null>;
 } => {
   const symbols: NativeSymbol[] = [];
   const moduleFormatsByEvidenceId = new Map<string, string | null>();
   let accepted = 0;
   let unsupported = 0;
+  let partialExports = false;
+  const exportLimitations: string[] = [];
   for (const observation of observations) {
     moduleFormatsByEvidenceId.set(
       observation.evidence.evidence_id,
@@ -36,9 +40,23 @@ export const collectNativeSymbols = (
     } else {
       accepted += 1;
       symbols.push(...observation.symbols);
+      if (observation.exportCoverage !== undefined) {
+        if (!observation.exportCoverage.exhaustive) partialExports = true;
+        for (const limitation of observation.exportCoverage.limitations)
+          exportLimitations.push(
+            `Native export Evidence ${observation.evidence.evidence_id}: ${limitation}`,
+          );
+      }
     }
   }
-  return { symbols, accepted, unsupported, moduleFormatsByEvidenceId };
+  return {
+    symbols,
+    accepted,
+    unsupported,
+    partialExports,
+    exportLimitations,
+    moduleFormatsByEvidenceId,
+  };
 };
 
 /** P/Invoke resolves a Mach-O export through dlsym, which names it without the symbol-table prefix. */
@@ -516,6 +534,8 @@ interface VerificationResultInput {
     readonly symbols: readonly NativeSymbol[];
     readonly accepted: number;
     readonly unsupported: number;
+    readonly partialExports: boolean;
+    readonly exportLimitations: readonly string[];
   };
   readonly pinvokeImports: readonly PinvokeVerification[];
   readonly nativeObservationCount: number;
@@ -540,7 +560,9 @@ export const buildVerificationResult = ({
   ).length;
   const coverage: ManagedNativeVerificationResult["coverage"] = {
     status:
-      managed.coverage.state === "complete" && native.unsupported === 0
+      managed.coverage.state === "complete" &&
+      native.unsupported === 0 &&
+      !native.partialExports
         ? "complete-within-inputs"
         : "partial",
   };
@@ -594,6 +616,10 @@ export const buildVerificationResult = ({
         : [
             "Some native Evidence operations were unsupported by this workflow.",
           ]),
+      ...(native.partialExports
+        ? ["Some native export inventories are not exhaustive."]
+        : []),
+      ...native.exportLimitations,
     ],
   };
 };

src/domain/managed/managedNativeVerificationSource.ts

@@ -34,6 +34,11 @@ export interface ManagedNativeObservationFacts {
   readonly evidence: Evidence;
   readonly symbols: readonly NativeSymbol[];
   readonly supported: boolean;
+  /** Coverage of an export inventory; function observations are targeted. */
+  readonly exportCoverage?: {
+    readonly exhaustive: boolean;
+    readonly limitations: readonly string[];
+  };
 }
 
 const inputFailure = (
@@ -62,6 +67,10 @@ const readNativeObservation = (
     return ok({
       evidence,
       supported: true,
+      exportCoverage: {
+        exhaustive: payload.value.exports.exhaustive,
+        limitations: payload.value.exports.limitations,
+      },
       symbols: payload.value.exports.items.map((symbol) => ({
         evidence_id: evidence.evidence_id,
         operation: evidence.operation,

tests/boundary/mcp/managedWorkflowUnknownIdentityMcp.test.ts

@@ -176,6 +176,63 @@ it("records a residual question for partial verification with zero item counts",
   expect(harness.session.listUnknowns()).toHaveLength(1);
 });
 
+it("retains partial native export coverage after an observed match", async () => {
+  const harness = await createApplicationMcpHarness({
+    session: createTestBinarySession(() => {
+      throw new Error("No provider needed");
+    }),
+  });
+  onTestFinished(harness.close);
+  const original = MANAGED_NATIVE_VERIFICATION_EXAMPLE.native_observations[0];
+  if (original === undefined || original.subject === null)
+    throw new Error("Managed verification example is missing native Evidence");
+  const report = inspectMachoSchema.parse(original.normalized_result);
+  const native = createEvidence(
+    {
+      path: original.subject.local_path!,
+      sha256: original.subject.digest.sha256,
+      format: original.subject.format,
+    },
+    original.provider,
+    {
+      operation: "inspect_macho",
+      parameters: original.parameters,
+      result: {
+        ...report,
+        exports: {
+          ...report.exports,
+          exhaustive: false,
+          limitations: ["Export inventory may be incomplete."],
+        },
+      },
+      rawResult: null,
+    },
+  );
+  const response = await harness.client.callTool({
+    name: "verify_managed_native_boundaries",
+    arguments: {
+      managed_boundaries:
+        MANAGED_NATIVE_VERIFICATION_EXAMPLE.managed_boundaries,
+      native_observations: [native],
+    },
+  });
+  expect(response.isError, JSON.stringify(response.content)).not.toBe(true);
+  const evidence = parseEvidence(response.structuredContent);
+  const result = managedNativeVerificationResultSchema.parse(
+    evidence.normalized_result,
+  );
+  expect(result.summary).toMatchObject({
+    verified: 1,
+    unresolved: 0,
+    contradicted: 0,
+  });
+  expect(result.coverage.status).toBe("partial");
+  expect(result.limitations).toContainEqual(
+    expect.stringContaining("Export inventory may be incomplete."),
+  );
+  expect(harness.session.listUnknowns()).toHaveLength(1);
+});
+
 it("records distinct unresolved managed boundary checks and makes exact replay idempotent", async () => {
   const harness = await createApplicationMcpHarness({
     session: createTestBinarySession(() => {