fix(desktop): retain unsupported filename coverage

Fixes #6665

src/artifacts/ArtifactReader.ts

@@ -155,6 +155,8 @@ export interface ArtifactTraversalOmission {
 export interface ArtifactReaderTraversal {
   readonly status: ArtifactInventoryCoverage["status"];
   readonly limitations: readonly string[];
+  /** Number of directory entries examined, including names omitted before decoding. */
+  readonly examinedEntries?: number;
 }
 
 /** Per-iterator observation sink; adapters report intentional omissions without shared state. */

src/artifacts/DesktopApplicationReader.ts

@@ -271,6 +271,12 @@ const scanDirectory = async (
           kind: omission.kind,
         });
       },
+      onCoverage: (coverage) => {
+        if (coverage.examinedEntries !== undefined)
+          entries = coverage.examinedEntries;
+        if (coverage.status !== "complete") partial = true;
+        limitations.push(...coverage.limitations);
+      },
     })) {
       entries++;
       abortIfNeeded(signal);

src/artifacts/DirectoryArtifactReader.ts

@@ -132,6 +132,7 @@ export class DirectoryArtifactReader implements ArtifactReader {
     if (unrepresentableNameCount > 0)
       options?.onCoverage?.({
         status: "unknown",
+        examinedEntries: examined,
         limitations: [
           `Directory contains ${String(unrepresentableNameCount)} entry name(s) that are not valid UTF-8; no filesystem operations were performed for them. First raw basename bytes: ${firstUnrepresentableNameHex ?? "unknown"}.`,
         ],