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/account-check.ts

@@ -245,15 +245,17 @@ export async function checkDebridLinkKey(
     const premiumLeftSec = Number(value.premiumLeft || 0);
     const accountType = Number(value.accountType || 0);
     const premiumUntilMs = Number.isFinite(premiumLeftSec) && premiumLeftSec > 0 ? now + premiumLeftSec * 1000 : 0;
-    const isPremium = premiumUntilMs > now || accountType > 0;
-    const username = String(value.username || "").trim() || undefined;
-    return {
-      ...base,
-      valid: true,
-      isPremium,
-      premiumUntilMs: premiumUntilMs > 0 ? premiumUntilMs : (accountType > 0 ? null : 0),
-      email: username,
-      message: premiumUntilMs > 0
+    const isPremium = premiumUntilMs > now || accountType > 0;
+    const username = String(value.username || "").trim() || undefined;
+    const email = String(value.email || "").trim() || undefined;
+    return {
+      ...base,
+      valid: true,
+      isPremium,
+      premiumUntilMs: premiumUntilMs > 0 ? premiumUntilMs : (accountType > 0 ? null : 0),
+      username,
+      email,
+      message: premiumUntilMs > 0
         ? formatRemaining(premiumUntilMs, now)
         : (accountType > 0 ? "Premium aktiv" : "Kein Premium (Free)")
     };

src/main/account-status-sanitizer.ts

@@ -103,6 +103,7 @@ export function sanitizeDebridAccountStatus(status: DebridAccountStatus, redacti
     accountId: sanitizeAccountStatusText(status.accountId, redactions),
     label: sanitizeAccountStatusText(status.label, redactions),
     maskedLogin: sanitizeAccountStatusText(status.maskedLogin, redactions),
+    username: status.username ? sanitizeAccountStatusText(status.username, redactions) : undefined,
     email: status.email ? sanitizeAccountStatusText(status.email, redactions) : undefined,
     message: sanitizeAccountStatusText(status.message, redactions)
   };

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
       };