feat: cross-OS profile sync

src/components/profile-info-dialog.tsx

@@ -86,7 +86,7 @@ import { LaunchArgumentsEditor } from "@/components/wayfern-config-form";
 import { WindowDragArea } from "@/components/window-drag-area";
 import { useInputModality } from "@/hooks/use-input-modality";
 import { translateBackendError } from "@/lib/backend-errors";
-import { getProfileIcon } from "@/lib/browser-utils";
+import { getProfileIcon, getProfileNativeOs } from "@/lib/browser-utils";
 import { DNS_BLOCKLIST_LEVELS } from "@/lib/dns-blocklist-levels";
 import { formatRelativeTime } from "@/lib/flag-utils";
 import { MOTION_EASE_OUT } from "@/lib/motion";
@@ -2297,6 +2297,7 @@ function FingerprintSectionInline({
           profileVersion={profile.version}
           profileBrowser={profile.browser}
           profileId={profile.id}
+          nativeOS={getProfileNativeOs(profile)}
         />
       ) : (
         <>

src/components/wayfern-config-dialog.tsx

@@ -12,6 +12,7 @@ import {
 } from "@/components/ui/dialog";
 import { ScrollArea } from "@/components/ui/scroll-area";
 import { translateBackendError } from "@/lib/backend-errors";
+import { getProfileNativeOs } from "@/lib/browser-utils";
 import type { BrowserProfile, WayfernConfig, WayfernOS } from "@/types";
 import { LoadingButton } from "./loading-button";
 import { RippleButton } from "./ui/ripple";
@@ -51,10 +52,8 @@ export function WayfernConfigDialog({
   useEffect(() => {
     if (profile?.browser === "wayfern") {
       setConfig(
-        profile.wayfern_config || {
-          geoip: true,
-          os: getCurrentOS(),
-        },
+        // No `os` means the profile's native OS, which the form shows.
+        profile.wayfern_config || { geoip: true },
       );
     }
   }, [profile]);
@@ -96,12 +95,7 @@ export function WayfernConfigDialog({
 
   const handleClose = () => {
     if (profile?.browser === "wayfern") {
-      setConfig(
-        profile.wayfern_config || {
-          geoip: true,
-          os: getCurrentOS(),
-        },
-      );
+      setConfig(profile.wayfern_config || { geoip: true });
     }
     onClose();
   };
@@ -139,6 +133,7 @@ export function WayfernConfigDialog({
               profileVersion={profile.version}
               profileBrowser="wayfern"
               profileId={profile.id}
+              nativeOS={getProfileNativeOs(profile)}
             />
           </div>
         </ScrollArea>

src/components/wayfern-config-form.tsx

@@ -183,6 +183,10 @@ interface WayfernConfigFormProps {
   /// The saved profile whose persona is edited here. Absent while a profile is
   /// being created: there is no seed yet, so there is no person to show.
   profileId?: string;
+  /// The OS a fingerprint without an explicit `os` describes: the machine that
+  /// created the saved profile. It stays the profile's claim on every
+  /// computer, so it is shown and regenerated instead of this computer's OS.
+  nativeOS?: WayfernOS;
 }
 
 export function LaunchArgumentsEditor({
@@ -281,6 +285,7 @@ export function WayfernConfigForm({
   profileVersion,
   profileBrowser,
   profileId,
+  nativeOS,
 }: WayfernConfigFormProps) {
   const { t } = useTranslation();
   const [activeTab, setActiveTab] = useState(
@@ -296,7 +301,10 @@ export function WayfernConfigForm({
     if (!profileVersion) return;
     setIsGeneratingFingerprint(true);
     try {
-      const configJson = JSON.stringify(config);
+      const configJson = JSON.stringify({
+        ...config,
+        os: config.os ?? nativeOS,
+      });
       const result = await invoke<GeneratedFingerprint>(
         "generate_sample_fingerprint",
         {
@@ -341,7 +349,7 @@ export function WayfernConfigForm({
     void handleGenerateFingerprint();
   };
 
-  const selectedOS = config.os || currentOS;
+  const selectedOS = config.os || nativeOS || currentOS;
 
   useEffect(() => {
     if (isCreating && typeof window !== "undefined") {