Add Store MSIX packaging and dark/light theme for 2.9.0.

EOF

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/update/update.go

@@ -18,7 +18,7 @@ import (
 
 // CurrentVersion is the product/semver used for update eligibility (feed "version").
 // Keep major.minor.patch only — no build suffix here.
-const CurrentVersion = "2.8.0"
+const CurrentVersion = "2.9.0"
 
 // BuildNumber is the monotonic build within CurrentVersion (Windows FileVersion 4th part,
 // macOS CFBundleVersion suffix, Android versionCode low digits). Bump on every release build.
@@ -64,17 +64,18 @@ type Manifest struct {
 
 // Status is returned to the UI / CLI.
 type Status struct {
-	Current     string `json:"current"`
-	Latest      string `json:"latest,omitempty"`
-	Notes       string `json:"notes,omitempty"`
-	URL         string `json:"url,omitempty"`
-	SHA256      string `json:"sha256,omitempty"`
-	Platform    string `json:"platform,omitempty"`
-	Available   bool   `json:"available"`
-	Mandatory   bool   `json:"mandatory"`
-	Checking    bool   `json:"checking,omitempty"`
-	Error       string `json:"error,omitempty"`
-	ManifestURL string `json:"manifest_url"`
+	Current      string `json:"current"`
+	Latest       string `json:"latest,omitempty"`
+	Notes        string `json:"notes,omitempty"`
+	URL          string `json:"url,omitempty"`
+	SHA256       string `json:"sha256,omitempty"`
+	Platform     string `json:"platform,omitempty"`
+	Available    bool   `json:"available"`
+	Mandatory    bool   `json:"mandatory"`
+	Checking     bool   `json:"checking,omitempty"`
+	Error        string `json:"error,omitempty"`
+	ManifestURL  string `json:"manifest_url"`
+	StoreManaged bool   `json:"store_managed,omitempty"` // MSIX / Microsoft Store — no in-app updates
 }
 
 // PlatformKey is "GOOS-GOARCH", e.g. windows-amd64, darwin-arm64.
@@ -192,6 +193,12 @@ func Check(ctx context.Context, manifestURL string) (Status, error) {
 	}
 	key := PlatformKey()
 	st := Status{Current: DisplayVersion(), ManifestURL: manifestURL, Platform: key}
+	if IsStorePackaged() {
+		st.StoreManaged = true
+		st.Available = false
+		st.Notes = "Обновления через Microsoft Store"
+		return st, nil
+	}
 
 	m, err := fetchManifest(ctx, manifestURL)
 	if err != nil {