chore(vendor): import pi 0.85.1

Imported as a linear vendor commit so forge rebases do not replay the upstream root tree.

git-subtree-dir: third_party/pi

git-subtree-split: d981de1229ef899957bbe968bc8dcda02a21f477

third_party/pi/packages/coding-agent/src/modes/interactive/model-search.ts

@@ -0,0 +1,21 @@
+export interface ModelSearchItem {
+	id: string;
+	provider: string;
+	name?: string;
+}
+
+export function getModelSearchText(item: ModelSearchItem): string {
+	const { id, provider } = item;
+	const name = item.name ? ` ${item.name}` : "";
+	return `${id} ${provider} ${provider}/${id} ${provider} ${id}${name}`;
+}
+
+/**
+ * The /model selector search should rank exact provider-prefixed queries before proxy-provider IDs
+ * like openrouter/openai/gpt-5, so keep the bare model ID out of the leading position.
+ */
+export function getModelSelectorSearchText(item: ModelSearchItem): string {
+	const { id, provider } = item;
+	const name = item.name ? ` ${item.name}` : "";
+	return `${provider} ${provider}/${id} ${provider} ${id}${name}`;
+}