feat(rpc): add validated desktop Pi RPC command palette

ui/src/workspace/reducer.test.ts

@@ -112,6 +112,70 @@ describe("workspace reducer", () => {
 		});
 		expect(state.runtimesById.a.pendingSubmissions).toEqual([]);
 	});
+	it("reconciles duplicate pending submissions one message at a time and honors Pi queue totals", () => {
+		let state = reconcileWorkspace(initialWorkspaceState, workspace);
+		for (const id of [1, 2])
+			state = workspaceReducer(state, {
+				type: "submissionAdded",
+				runtimeId: "a",
+				submission: {
+					id,
+					text: "Continue",
+					userMessageCount: 0,
+					phase: "sent",
+				},
+			});
+		state = workspaceReducer(state, {
+			type: "snapshotRequested",
+			runtimeId: "a",
+			generation: 1,
+		});
+		state = workspaceReducer(state, {
+			type: "snapshotLoaded",
+			runtimeId: "a",
+			generation: 1,
+			snapshot: {
+				bridgeInstanceId: "epoch",
+				latestSeq: 1,
+				runtime: runtime("a"),
+				transcript: {
+					data: { messages: [{ role: "user", content: "Continue" }] },
+				},
+				extensions: [],
+			},
+		});
+		expect(state.runtimesById.a.pendingSubmissions).toHaveLength(1);
+		state = applyWorkspaceEvent(state, {
+			bridgeInstanceId: "epoch",
+			seq: 1,
+			type: "runtime_event",
+			data: {
+				runtimeId: "a",
+				eventType: "queue",
+				eventData: {
+					event: {
+						pendingMessageCount: 3,
+						followUp: ["one"],
+						steering: ["two"],
+					},
+				},
+			},
+		});
+		expect(state.runtimesById.a.summary.queueCount).toBe(3);
+	});
+	it("keeps a hotkey-triggered new-session startup visible until completion", () => {
+		let state = reconcileWorkspace(initialWorkspaceState, workspace);
+		state = workspaceReducer(state, {
+			type: "newSessionLaunch",
+			launch: { phase: "starting", detail: "Starting a new Pi session…" },
+		});
+		expect(state.newSessionLaunch?.phase).toBe("starting");
+		state = workspaceReducer(state, {
+			type: "newSessionLaunch",
+			launch: undefined,
+		});
+		expect(state.newSessionLaunch).toBeUndefined();
+	});
 	it("rejects out-of-order snapshots and detects duplicate/gap/epoch events", () => {
 		let state = reconcileWorkspace(initialWorkspaceState, workspace);
 		state = workspaceReducer(state, {