feat: update sidebar agent workflow and host filter UI

packages/app/src/utils/new-agent-routing.test.ts

@@ -3,7 +3,9 @@ import { describe, expect, it } from "vitest";
 import type { CheckoutStatusPayload } from "@/hooks/use-checkout-status-query";
 import {
   buildNewAgentRoute,
+  parseAgentKey,
   resolveNewAgentWorkingDir,
+  resolveSelectedAgentForNewAgent,
 } from "./new-agent-routing";
 
 describe("buildNewAgentRoute", () => {
@@ -35,3 +37,60 @@ describe("resolveNewAgentWorkingDir", () => {
     );
   });
 });
+
+describe("parseAgentKey", () => {
+  it("parses server and agent ids from combined key", () => {
+    expect(parseAgentKey("srv-1:agent-9")).toEqual({
+      serverId: "srv-1",
+      agentId: "agent-9",
+    });
+  });
+
+  it("uses the last separator to preserve server ids with colons", () => {
+    expect(parseAgentKey("localhost:6767:agent-9")).toEqual({
+      serverId: "localhost:6767",
+      agentId: "agent-9",
+    });
+  });
+
+  it("returns null for malformed keys", () => {
+    expect(parseAgentKey("")).toBeNull();
+    expect(parseAgentKey("only-server")).toBeNull();
+    expect(parseAgentKey(":agent-1")).toBeNull();
+    expect(parseAgentKey("srv-1:")).toBeNull();
+  });
+});
+
+describe("resolveSelectedAgentForNewAgent", () => {
+  it("prefers the agent in the current route", () => {
+    expect(
+      resolveSelectedAgentForNewAgent({
+        pathname: "/h/srv-1/agent/agent-2",
+        selectedAgentId: "srv-9:agent-9",
+      })
+    ).toEqual({
+      serverId: "srv-1",
+      agentId: "agent-2",
+    });
+  });
+
+  it("falls back to selected agent key when route has no agent", () => {
+    expect(
+      resolveSelectedAgentForNewAgent({
+        pathname: "/h/srv-1/settings",
+        selectedAgentId: "srv-1:agent-7",
+      })
+    ).toEqual({
+      serverId: "srv-1",
+      agentId: "agent-7",
+    });
+  });
+
+  it("returns null when neither route nor selection has an agent", () => {
+    expect(
+      resolveSelectedAgentForNewAgent({
+        pathname: "/h/srv-1/settings",
+      })
+    ).toBeNull();
+  });
+});