WIP: Large refactor checkpoint

- Refactored daemon client and RPC layer
- Added new client package structure in server
- Removed legacy hooks (use-daemon-request, use-session-rpc, use-websocket)
- Added use-daemon-client hook
- Added e2e test infrastructure with Playwright
- Updated agent providers and session handling
- Removed codex-sdk patches

packages/app/src/hooks/use-daemon-client.ts

@@ -0,0 +1,44 @@
+import { useEffect, useMemo } from "react";
+import { AppState } from "react-native";
+import { DaemonClientV2 } from "@server/client/daemon-client-v2";
+
+function runDaemonRequest(label: string, promise: Promise<unknown>): void {
+  void promise.catch((error) => {
+    console.warn(`[DaemonClient] ${label} failed`, error);
+  });
+}
+
+export function useDaemonClient(url: string, conversationId?: string | null): DaemonClientV2 {
+  const client = useMemo(
+    () =>
+      new DaemonClientV2({
+        url,
+        conversationId: conversationId ?? null,
+        suppressSendErrors: true,
+      }),
+    [url, conversationId]
+  );
+
+  useEffect(() => {
+    runDaemonRequest("connect", client.connect());
+
+    return () => {
+      runDaemonRequest("close", client.close());
+    };
+  }, [client]);
+
+  useEffect(() => {
+    const subscription = AppState.addEventListener("change", (nextState) => {
+      if (nextState !== "active") {
+        return;
+      }
+      client.ensureConnected();
+    });
+
+    return () => {
+      subscription.remove();
+    };
+  }, [client]);
+
+  return client;
+}