[management,client] 0.75.0 release with new desktop UI (#6473)

- **Wails v3 application** (`client/ui`) with a React + TypeScript + Tailwind frontend replacing the Fyne UI: main connection view, exit-node switcher, networks/peers browser with detail panels, profile management, settings (general, network, SSH, security, troubleshooting, appearance), debug-bundle creation, and a first-run welcome flow.
- **Internationalization**: go-i18n bundle with 9 locales (en, de, es, fr, hu, it, pt, ru, zh-CN) shared between the tray and the frontend.
- **New system tray** implementation with per-platform theme-aware icons, including a native XEmbed host for Linux (`xembed_tray_linux.c`) and a Linux theme watcher.
- **Session handling**: auth session watcher (`client/internal/auth/sessionwatch`), pending login flow, session-expiration dialog and tray notifications, and `netbird login` improvements.
- **Daemon API extensions** (`daemon.proto`): status stream subscription, event stream, networks/exit-node selection endpoints, and richer full status — with probe throttling on the daemon side to protect against UI-driven request storms.
- **UI preferences store** persisted per profile, autostart management via the daemon (single source of truth in HKCU on Windows).
- **Build system**: Taskfile-based builds per platform (macOS, Linux, Windows), Docker cross-compilation images, MSIX/NSIS/nfpm/AppImage packaging, and a new `frontend-ui` CI workflow.

Co-authored-by: Zoltan Papp <zoltan.pmail@gmail.com>
Co-authored-by: Eduard Gert <kontakt@eduardgert.de>
Co-authored-by: braginini <bangvalo@gmail.com>
Co-authored-by: Pascal Fischer <32096965+pascal-fischer@users.noreply.github.com>
Co-authored-by: riccardom <riccardomanfrin@gmail.com>

client/ui/frontend/src/components/ManagementServerSwitch.tsx

@@ -0,0 +1,38 @@
+import { useTranslation } from "react-i18next";
+import netbirdLogo from "@/assets/logos/netbird.svg";
+import { SwitchItem } from "@/components/switches/SwitchItem";
+import { SwitchItemGroup } from "@/components/switches/SwitchItemGroup";
+import { ManagementMode } from "@/hooks/useManagementUrl.ts";
+
+type Props = {
+    value: ManagementMode;
+    onChange: (mode: ManagementMode) => void;
+    fullWidth?: boolean;
+};
+
+export const ManagementServerSwitch = ({ value, onChange, fullWidth = false }: Props) => {
+    const { t, i18n } = useTranslation();
+    const itemClass = fullWidth ? "flex-1" : undefined;
+    return (
+        <SwitchItemGroup
+            key={i18n.language}
+            value={value}
+            onChange={(v) => onChange(v as ManagementMode)}
+            aria-label={t("settings.general.management.label")}
+            className={fullWidth ? "w-full" : undefined}
+        >
+            <SwitchItem value={ManagementMode.Cloud} className={itemClass}>
+                <img
+                    src={netbirdLogo}
+                    alt={""}
+                    aria-hidden={"true"}
+                    className={"aspect-[31/23] h-[0.8rem] shrink-0"}
+                />
+                {t("settings.general.management.cloud")}
+            </SwitchItem>
+            <SwitchItem value={ManagementMode.SelfHosted} className={itemClass}>
+                {t("settings.general.management.selfHosted")}
+            </SwitchItem>
+        </SwitchItemGroup>
+    );
+};