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/shell/routes.ts

@@ -9,12 +9,7 @@
 // modifier alongside the base class, not a replacement, so every other
 // route's layout is untouched. `/agents` joined for the same reason —
 // its own table view (plus the list+detail split) hits the same cap.
-const WIDE_BODY_ROUTES = new Set([
-  "/issues",
-  "/agents",
-  "/review-runs",
-  "/review-tryout",
-]);
+const WIDE_BODY_ROUTES = new Set(["/issues", "/agents", "/review"]);
 
 // `/agents/:name/terminal` (and a subagent's, under
 // `/agents/:name/subagents/:subagent/`) is full-bleed: the terminal fills