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.

tests/account-check.test.ts

@@ -81,14 +81,23 @@ describe("checkMegaDebridAccount", () => {
 });
 
 describe("checkDebridLinkKey", () => {
-  it("reports valid + premium from premiumLeft seconds", async () => {
-    const premiumLeft = 60 * 24 * 60 * 60;
-    mockFetchOnce(200, { success: true, value: { username: "u", accountType: 1, premiumLeft } });
-    const st = await checkDebridLinkKey(debridLinkKey(), undefined, NOW);
-    expect(st.valid).toBe(true);
-    expect(st.isPremium).toBe(true);
-    expect(st.premiumUntilMs).toBe(NOW + premiumLeft * 1000);
-  });
+  it("reports valid + premium from premiumLeft seconds", async () => {
+    const premiumLeft = 60 * 24 * 60 * 60;
+    mockFetchOnce(200, { success: true, value: { username: "u", email: "u@example.test", accountType: 1, premiumLeft } });
+    const st = await checkDebridLinkKey(debridLinkKey(), undefined, NOW);
+    expect(st.valid).toBe(true);
+    expect(st.isPremium).toBe(true);
+    expect(st.premiumUntilMs).toBe(NOW + premiumLeft * 1000);
+    expect(st.username).toBe("u");
+    expect(st.email).toBe("u@example.test");
+  });
+
+  it("does not present a Debrid-Link username as an email address", async () => {
+    mockFetchOnce(200, { success: true, value: { username: "xsucukde5", accountType: 0, premiumLeft: 0 } });
+    const st = await checkDebridLinkKey(debridLinkKey(), undefined, NOW);
+    expect(st.username).toBe("xsucukde5");
+    expect(st.email).toBeUndefined();
+  });
 
   it("reports valid but free (premiumLeft 0, accountType 0)", async () => {
     mockFetchOnce(200, { success: true, value: { username: "u", accountType: 0, premiumLeft: 0 } });

tests/renderer-settings.test.ts

@@ -15,6 +15,7 @@ describe("renderer settings validation", () => {
         valid: true,
         isPremium: true,
         premiumUntilMs: null,
+        username: "web-user",
         message: "Premium aktiv",
         checkedAt: 1_700_000_000_000
       }
@@ -22,6 +23,7 @@ describe("renderer settings validation", () => {
     const rendererSettings = createRendererSettings(current);
 
     expect(rendererSettings.debridAccountStatuses["svc-realdebrid"]).toHaveProperty("email", undefined);
+    expect(rendererSettings.debridAccountStatuses["svc-realdebrid"]).toHaveProperty("username", "web-user");
     const validated = validateRendererSettingsUpdate(rendererSettings, current);
 
     expect(validated.debridAccountStatuses).toEqual(rendererSettings.debridAccountStatuses);

tests/settings-view.test.tsx

@@ -153,10 +153,10 @@ function accountSources(): AccountRowSource[] {
       mode: "API-Key",
       icon: "./provider-icons/debrid-link.ico",
       enabled: true,
-      status: { state: "free", message: "Free Account", premiumUntilMs: null },
+      status: { state: "free", message: "Free Account", premiumUntilMs: null, username: "xsucukde5" },
       dailyLimitBytes: 0,
       dailyUsageBytes: 0,
-      username: "free-user",
+      username: "",
       credentialKind: "api-key",
       canCheck: true
     },
@@ -352,6 +352,8 @@ describe("settings model", () => {
     expect(rows[0].username).toBe("stored-user");
     expect(rows[0].email).toBe("verified@example.test");
     expect(rows[0].credential).toBe("••••••");
+    expect(rows[1].username).toBe("xsucukde5");
+    expect(rows[1].email).toBe("—");
     expect(rows[1].credential).toBe("API-Key");
     expect(rows.map((row) => row.status.tone)).toEqual(["ok", "free", "invalid", "unknown", "disabled"]);
     expect(rows.map((row) => row.status.text)).toEqual([

tests/storage.test.ts

@@ -673,7 +673,8 @@ describe("settings storage", () => {
           valid: true,
           isPremium: true,
           premiumUntilMs: checkedAt + 1000,
-          email: "web-user",
+          username: "web-user",
+          email: "w***r@example.test",
           message: "Premium aktiv",
           checkedAt
         }
@@ -684,9 +685,36 @@ describe("settings storage", () => {
       accountId: "svc-realdebrid",
       provider: "realdebrid",
       valid: true,
+      username: "web-user",
+      email: "w***r@example.test",
       checkedAt
     });
   });
+
+  it("migrates a legacy Debrid-Link username out of the email field", () => {
+    const [key] = parseDebridLinkApiKeys("dl-key-one");
+    const normalized = normalizeSettings({
+      ...defaultSettings(),
+      debridLinkApiKeys: "dl-key-one",
+      debridAccountStatuses: {
+        [key.id]: {
+          accountId: key.id,
+          provider: "debridlink",
+          label: "Key 1",
+          maskedLogin: key.masked,
+          valid: true,
+          isPremium: false,
+          premiumUntilMs: 0,
+          email: "xsucukde5",
+          message: "Kein Premium (Free)",
+          checkedAt: Date.now()
+        }
+      }
+    });
+
+    expect(normalized.debridAccountStatuses[key.id].username).toBe("xsucukde5");
+    expect(normalized.debridAccountStatuses[key.id].email).toBeUndefined();
+  });
 
   it("defaults AllDebrid web login to disabled and normalizes the flag", () => {
     expect(defaultSettings().allDebridUseWebLogin).toBe(false);