fix: the stats bar's controls were dead — pointer-events + button affordance

Live-driving the real browser caught it (the user's report: "they don't
work as buttons"): the stats row sits OUTSIDE the composer shell's
pointer-events-auto div, inside the sticky scroll wrapper's
pointer-events-none — every control on the row was unclickable, including
the pre-existing stats-detail popover button. The row now re-enables
pointer-events itself.

Also, per the user's sizing note: bar text 10px → 11px with a touch more
breathing room, and the model + thinking controls gain quiet pill
affordance (rounded-full border, card bg, ▾ chevron) — still muted by
design, but visibly buttons.

Verified live end-to-end in the browser: click opens the model menu ABOVE
(366 rows, search autofocused), "qwen flash" narrows to 5, picking
qwen3.8-flash persists + flips the label, the thinking menu shows exactly
that model's supported levels (Off/Minimal/Low/Medium/High), Medium
persists on the record via PUT, labels update. Test session settings
restored after the drive. Gates 350/350.

components/model-picker.tsx

@@ -157,9 +157,10 @@ export function ModelControl({
 				}}
 				aria-expanded={open === "model"}
 				title="Conversation model — applies next turn"
-				className="flex items-center gap-1 transition-colors hover:text-foreground"
+				className="flex items-center gap-1.5 rounded-full border border-border/60 bg-card/70 px-2.5 py-1 transition-colors hover:border-border hover:bg-muted"
 			>
-				<span>{effectiveId ? prettyModel(effectiveId) : "—"}</span>
+				<span className="text-card-foreground">{effectiveId ? prettyModel(effectiveId) : "—"}</span>
+				<span aria-hidden className="text-[9px] text-muted-foreground">▾</span>
 			</button>
 			<span aria-hidden>·</span>
 			<button
@@ -171,11 +172,12 @@ export function ModelControl({
 				}}
 				aria-expanded={open === "thinking"}
 				title="Thinking level — applies next turn"
-				className="flex items-center gap-1 transition-colors hover:text-foreground"
+				className="flex items-center gap-1.5 rounded-full border border-border/60 bg-card/70 px-2.5 py-1 transition-colors hover:border-border hover:bg-muted"
 			>
-				<span>
+				<span className="text-card-foreground">
 					{effectiveLevel === undefined ? "Thinking —" : `Thinking: ${LEVEL_LABEL[effectiveLevel] ?? effectiveLevel}`}
 				</span>
+				<span aria-hidden className="text-[9px] text-muted-foreground">▾</span>
 			</button>
 
 			{open === "model" && (

components/stats-bar.tsx

@@ -44,7 +44,11 @@ export function StatsBar({
 	return (
 		<div
 			data-testid="stats-bar"
-			className="relative flex items-center justify-between gap-3 px-3 pt-1 text-[10px] text-muted-foreground"
+			// pointer-events-auto: the sticky composer wrapper is pointer-events-none
+			// (so its transparent gradient area never blocks scrolling) — this row
+			// must re-enable events or every control on it is dead (the model-
+			// control wave caught this live: buttons rendered, clicks never landed).
+			className="pointer-events-auto relative flex items-center justify-between gap-3 px-3 pt-1.5 text-[11px] text-muted-foreground"
 		>
 			<button
 				type="button"

tests/render-stats-bar.test.tsx

@@ -35,8 +35,11 @@ describe("stats bar", () => {
 		assert.match(html, /data-testid="stats-context">—</);
 		assert.match(html, /data-testid="stats-cost">—</);
 		// no turns, no settings, catalog not loaded → both control labels "—"
-		assert.match(html, /data-testid="stats-model"[^>]*><span>—<\/span>/);
+		assert.match(html, /data-testid="stats-model"[^>]*>\s*<span[^>]*>—<\/span>/);
 		assert.match(html, /Thinking —</);
+		// the control reads as a button: pill border + dropdown chevron
+		assert.match(html, /data-testid="stats-model"[^>]*rounded-full[^>]*>/);
+		assert.match(html, /▾/);
 	});
 
 	it("folds context + cost from the turns log (core/prices, no local math)", () => {
@@ -51,7 +54,7 @@ describe("stats bar", () => {
 		assert.match(html, /data-testid="stats-cost">\$0\.0020</);
 		// model button label falls back to the last turn's actual model
 		// (the catalog + settings are what drive it once loaded)
-		assert.match(html, /data-testid="stats-model"[^>]*><span>Glm 5\.3 Flash<\/span>/);
+		assert.match(html, /data-testid="stats-model"[^>]*>\s*<span[^>]*>Glm 5\.3 Flash<\/span>/);
 	});
 
 	it("shows — for cost when every turn is unpriceable, never a fake $0", () => {