fix(accounts): separate Debrid-Link username and email

Persist the username and email returned by the Debrid-Link account endpoint as distinct identity fields and project them into their matching account-table columns. Migrate cached legacy statuses that stored a username in the email field, preserve both fields through renderer validation and sanitization, and cover API responses with and without an email address.

src/main/storage.ts

@@ -280,22 +280,30 @@ function normalizeDebridAccountStatuses(
         continue;
       }
       const entry = raw as Partial<DebridAccountStatus>;
-      if (typeof entry.accountId !== "string" || typeof entry.checkedAt !== "number") {
-        continue;
-      }
-      result[key] = {
-        accountId: entry.accountId,
-        provider: entry.provider === "debridlink"
-          ? "debridlink"
-          : entry.provider === "realdebrid"
-            ? "realdebrid"
-            : "megadebrid",
+      if (typeof entry.accountId !== "string" || typeof entry.checkedAt !== "number") {
+        continue;
+      }
+      const provider = entry.provider === "debridlink"
+        ? "debridlink"
+        : entry.provider === "realdebrid"
+          ? "realdebrid"
+          : "megadebrid";
+      let username = typeof entry.username === "string" ? entry.username : undefined;
+      let email = typeof entry.email === "string" ? entry.email : undefined;
+      if (provider === "debridlink" && !username && email && !email.includes("@")) {
+        username = email;
+        email = undefined;
+      }
+      result[key] = {
+        accountId: entry.accountId,
+        provider,
         label: String(entry.label || ""),
         maskedLogin: String(entry.maskedLogin || ""),
         valid: Boolean(entry.valid),
-        isPremium: Boolean(entry.isPremium),
-        premiumUntilMs: typeof entry.premiumUntilMs === "number" ? entry.premiumUntilMs : null,
-        email: typeof entry.email === "string" ? entry.email : undefined,
+        isPremium: Boolean(entry.isPremium),
+        premiumUntilMs: typeof entry.premiumUntilMs === "number" ? entry.premiumUntilMs : null,
+        username,
+        email,
         message: String(entry.message || ""),
         checkedAt: entry.checkedAt
       };