swarm ui: one review page

The two review tabs, runs and try-out, are one: /review. It is a column of
three sections: try a classification and the classifier settings, each a
folded bar (the settings' bar says what they are now), then the recent runs,
always open. The settings had been pinned under the try-out form; they are now
a section of their own. A new Disclosure primitive is the folding bar, a
native details wearing the Panel's classes, so the folded and open sections
read as the same surface.

/review-runs and /review-tryout are gone, with no redirect.

frontend/packages/swarm-ui/src/pages/review-settings/ClassifierSettings.tsx

@@ -10,7 +10,7 @@ import { useEffect, useState } from "preact/hooks";
 import { ApiErrorPanel } from "@hive/shared/api-error-panel.js";
 import { readApiError, type ProblemDetails } from "@hive/shared/api-error.js";
 import { Button } from "../../ui/button/Button.js";
-import { Panel } from "../../ui/panel/Panel.js";
+import { Disclosure } from "../../ui/disclosure/Disclosure.js";
 import { SelectField } from "../../ui/select-field/SelectField.js";
 import { TextField } from "../../ui/text-field/TextField.js";
 import {
@@ -20,6 +20,7 @@ import {
   changed,
   draftOf,
   settingsProblem,
+  settingsSummary,
   toSettings,
   type ClassifierSettingsBody,
   type Runtime,
@@ -54,6 +55,9 @@ export function ClassifierSettings() {
   const [saveError, setSaveError] = useState<ProblemDetails | null>(null);
   const [saving, setSaving] = useState(false);
   const [justSaved, setJustSaved] = useState(false);
+  // Folded until wanted: the settings are changed now and then, and the
+  // folded header says what they are.
+  const [open, setOpen] = useState(false);
 
   useEffect(() => {
     let cancelled = false;
@@ -114,7 +118,13 @@ export function ClassifierSettings() {
   const problem = draft === null ? null : settingsProblem(draft);
 
   return (
-    <Panel title="classifier settings" icon="⚙️">
+    <Disclosure
+      title="classifier settings"
+      icon="⚙️"
+      hint={saved ? settingsSummary(saved) : undefined}
+      open={open}
+      onToggle={setOpen}
+    >
       <p>
         The runtime, model and effort the review classifier runs with, and how
         many requested reviews run at once. The API key runtime runs claude on
@@ -234,6 +244,6 @@ export function ClassifierSettings() {
           ) : null}
         </form>
       ) : null}
-    </Panel>
+    </Disclosure>
   );
 }