FN-6191: unquarantine WorkflowNodeEditor inspector test

Rescue the WorkflowNodeEditor quarantine by waiting for inspector fields before asserting.

- make the foreach inspector Mode assertion wait for the panel to finish rendering
- wait for the code node Source and Timeout inputs before editing them to avoid the inspector race
- remove WorkflowNodeEditor.test.tsx from the dashboard quarantine config and ledger

Files changed:
 .../app/components/__tests__/WorkflowNodeEditor.test.tsx          | 6 +++---
 packages/dashboard/vitest.config.ts                               | 4 +---
 scripts/lib/test-quarantine.json                                  | 8 +-------
 3 files changed, 5 insertions(+), 13 deletions(-)

Fusion-Task-Id: FN-6191

Fusion-Task-Lineage: 57fb1dcc-3e50-4ba1-8488-fcff204c1d76

packages/dashboard/app/components/__tests__/WorkflowNodeEditor.test.tsx

@@ -1108,7 +1108,7 @@ describe("WorkflowNodeEditor — U8 step-inversion authoring", () => {
     // cold-transform shard load (observed intermittently in CI-like runs).
     await waitFor(() => expect(screen.getByTestId("wf-node-foreach")).toBeInTheDocument(), { timeout: 5000 });
     // The foreach inspector shows the Mode select (KTD-3).
-    expect(screen.getByText("Mode")).toBeInTheDocument();
+    await waitFor(() => expect(screen.getByText("Mode")).toBeInTheDocument());
     // No empty-state hint because the palette seeded a step-execute child.
     expect(screen.queryByTestId("wf-foreach-empty")).not.toBeInTheDocument();
 
@@ -1269,10 +1269,10 @@ describe("WorkflowNodeEditor — U8 step-inversion authoring", () => {
     expect(await screen.findByTestId("wf-column-panel")).toBeInTheDocument();
     fireEvent.click(screen.getByText("Code").closest("button")!);
     await waitFor(() => expect(screen.getByTestId("wf-node-code")).toBeInTheDocument(), { timeout: 5000 });
-    const source = screen.getByText("Source (TypeScript)").parentElement!.querySelector("textarea")! as HTMLTextAreaElement;
+    const source = (await screen.findByText("Source (TypeScript)")).parentElement!.querySelector("textarea")! as HTMLTextAreaElement;
     fireEvent.change(source, { target: { value: "export default async()=>({outcome:'success'})" } });
     expect(source.value).toContain("outcome:'success'");
-    const timeout = screen.getByText("Timeout (ms)").parentElement!.querySelector("input")! as HTMLInputElement;
+    const timeout = (await screen.findByText("Timeout (ms)")).parentElement!.querySelector("input")! as HTMLInputElement;
     fireEvent.change(timeout, { target: { value: "12000" } });
     expect(timeout.value).toBe("12000");
   });

packages/dashboard/vitest.config.ts

@@ -231,9 +231,7 @@ const qualityAppComponentBatchBTests = buildComponentQualityInclude(batchedQuali
 const qualityAppAppOnlyTests = ["app/components/__tests__/App.test.tsx"];
 const qualityAppChatOnlyTests = ["app/components/__tests__/ChatView.test.tsx"];
 const qualityAppSettingsOnlyTests = ["app/components/__tests__/SettingsModal.test.tsx"];
-const quarantinedDashboardTests = [
-  "app/components/__tests__/WorkflowNodeEditor.test.tsx",
-];
+const quarantinedDashboardTests: string[] = [];
 
 const qualityApiTests = [
   // Critical HTTP/server behavior: auth, task/project/settings mutation,

scripts/lib/test-quarantine.json

@@ -1,10 +1,4 @@
 {
   "$comment": "Flaky-test quarantine ledger (deletion ratchet — see AGENTS.md 'Flaky tests: quarantine on sight' and docs/testing.md 'Quarantine ledger and the deletion ratchet'). A test observed failing without a corresponding real bug is quarantined ON SIGHT: add an entry here AND a matching one-line `exclude` entry in that package's vitest config, in the same commit. Every entry needs a non-empty `reason` (link the failing run) and a `quarantinedAt` date — the entry expires 14 days later, at which point the test file is DELETED unless someone rescues it with evidence it catches real regressions plus a root-cause fix (never appeasement). There is deliberately no loader module and no automation around this file: it is a dated record, the vitest config exclude is the mechanism, and the sweep is policy executed by whoever touches the suite.",
-  "entries": [
-    {
-      "file": "packages/dashboard/app/components/__tests__/WorkflowNodeEditor.test.tsx",
-      "reason": "FN-6156 broad pnpm test observed dashboard-app-quality-components-b flake: edits a code node source and timeout could not find Source (TypeScript) after clicking Code; unrelated to Board.test.tsx quarantine rescue.",
-      "quarantinedAt": "2026-06-09"
-    }
-  ]
+  "entries": []
 }