fix(downloads): restore actionable package states and extraction controls

Resolve child archive selections to complete multipart sets, support bulk package extraction, refresh extraction passwords at execution time, and keep archive failures scoped by their full paths.

Restore sortable download columns, preserve verified availability, classify package retry and extraction states, secure link copying through the preload bridge, and release cancelled provider work without stale cooldowns.

tests/visual/download-disclosure-transition.test.tsx

@@ -274,6 +274,35 @@ describe("download disclosure in the headless visual harness", () => {
     throw new Error(`Visual driver capture did not reach its ready state: ${name}`);
   }
 
+  it("sorts package rows through a real captured pointer click", async () => {
+    await loadDenseDownloads(1500);
+    if (!client) throw new Error("Chrome DevTools client is missing");
+    const point = await client.evaluate<{ x: number; y: number }>(`(() => {
+      const button = [...document.querySelectorAll('.downloads-column-sort')].find((entry) => entry.textContent?.startsWith('Name'));
+      if (!(button instanceof HTMLElement)) throw new Error('Name sort button missing');
+      const rect = button.getBoundingClientRect();
+      return { x: rect.left + rect.width / 2, y: rect.top + rect.height / 2 };
+    })()`);
+    const readState = (): Promise<{ ariaSort: string | null; names: string[] }> => client!.evaluate(`(() => ({
+      ariaSort: document.querySelector('[data-download-column="name"]')?.getAttribute('aria-sort') || null,
+      names: [...document.querySelectorAll('.downloads-package-row .downloads-name-cell strong')].map((entry) => entry.textContent || '')
+    }))()`);
+
+    await client.send("Input.dispatchMouseEvent", { type: "mousePressed", x: point.x, y: point.y, button: "left", clickCount: 1 });
+    await client.send("Input.dispatchMouseEvent", { type: "mouseReleased", x: point.x, y: point.y, button: "left", clickCount: 1 });
+    await delay(120);
+    const descending = await readState();
+    await client.send("Input.dispatchMouseEvent", { type: "mousePressed", x: point.x, y: point.y, button: "left", clickCount: 1 });
+    await client.send("Input.dispatchMouseEvent", { type: "mouseReleased", x: point.x, y: point.y, button: "left", clickCount: 1 });
+    await delay(120);
+    const ascending = await readState();
+
+    expect(descending.ariaSort).toBe("descending");
+    expect(ascending.ariaSort).toBe("ascending");
+    expect(descending.names.length).toBeGreaterThan(1);
+    expect(ascending.names).toEqual([...descending.names].reverse());
+  });
+
   async function measureDisclosure(action: "einklappen" | "ausklappen"): Promise<DisclosureSample[]> {
     if (!client) throw new Error("Chrome DevTools client is missing");
     return client.evaluate<DisclosureSample[]>(`(async () => {

tests/visual/mock-electron-api.ts

@@ -359,10 +359,19 @@ export function createVisualElectronApi(
         entry.status = "extracting";
       }
     },
-    extractNow: async (packageId) => {
-      const entry = fixture.snapshot.session.packages[packageId];
-      if (entry) {
-        entry.status = "extracting";
+    extractNow: async (request) => {
+      for (const packageId of request.packageIds) {
+        const entry = fixture.snapshot.session.packages[packageId];
+        if (entry) {
+          entry.status = "extracting";
+        }
+      }
+      for (const itemId of request.itemIds) {
+        const item = fixture.snapshot.session.items[itemId];
+        const entry = item ? fixture.snapshot.session.packages[item.packageId] : undefined;
+        if (entry) {
+          entry.status = "extracting";
+        }
       }
     },
     resetPackage: async (packageId) => {