research UI: fix 3 lint errors — async wrapper + escape apostrophe

Push right after ec1ddc6 tripped three eslint errors on the same-commit
lint pass. All three are cosmetic in behavior:

- ResearchList.tsx:48 + ResearchCanvas.tsx:64 — setState was called
  synchronously at the top of a useEffect. Wrap the body in an inner
  async load() and call setState inside it; effect still returns the
  cleanup for the alive-flag guard.
- ResearchWizard.tsx:207 — bare apostrophe in JSX text ("workspace's").
  Replace with ' to satisfy react/no-unescaped-entities.

frontend/src/components/dashboard/ResearchWizard.tsx

@@ -204,7 +204,7 @@ export function ResearchWizard({
               ) : null}
               {refining && (
                 <p style={{ fontFamily: mono, fontSize: 12, color: "#8a8a92" }}>
-                  Calling the workspace's default provider…
+                  Calling the workspace&apos;s default provider…
                 </p>
               )}
               {refineError && (