chore(vendor): import pi 1.3.0

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: 71023aec1546d6d677a65669c5665c0927ce0dd0

third_party/pi/packages/coding-agent/test/session-selector-path-delete.test.ts

@@ -218,13 +218,15 @@ describe("session selector path/delete interactions", () => {
 
 	it("does not start redundant All loads when toggling scopes while All is already loading", async () => {
 		const currentSessions = [makeSession({ id: "current" })];
+		const allSessions = [makeSession({ id: "all" })];
 		const allDeferred = createDeferred<SessionInfo[]>();
 		let allLoadCalls = 0;
 
 		const selector = new SessionSelectorComponent(
 			async () => currentSessions,
-			async () => {
+			async (onProgress) => {
 				allLoadCalls++;
+				onProgress?.(1, 2, allSessions);
 				return allDeferred.promise;
 			},
 			() => {},
@@ -241,8 +243,10 @@ describe("session selector path/delete interactions", () => {
 		list.handleInput("\t"); // current -> all again while load pending
 
 		expect(allLoadCalls).toBe(1);
+		expect(selector.getSessionList().getSelectedSessionPath()).toBe(allSessions[0]!.path);
+		expect(selector.render(120).join("\n")).toContain("Loading");
 
-		allDeferred.resolve([makeSession({ id: "all" })]);
+		allDeferred.resolve(allSessions);
 		await flushPromises();
 	});