fix(accounts): refresh active logins and toggle instantly

Split bulk account checks into active-only and all-configured scopes so disabled providers, Mega-Debrid accounts, and Debrid-Link keys no longer distort the normal result count. Preserve explicit full checks for diagnosing disabled credentials and surface their failed status.

Render account enablement from the optimistic settings draft, persist it with revision-safe rollback, and apply the same immediate behavior to individual and bulk switches. Extend the IPC contract, translations, changelog, and regression coverage.

tests/i18n.test.ts

@@ -188,6 +188,8 @@ describe("renderer localization", () => {
     ["Zwischenablage: 3 Link(s) erkannt", "Clipboard: 3 link(s) detected"],
     ["2/4 API-Keys deaktiviert.", "2/4 API keys disabled."],
     ["Account-Check: 3/4 Login gültig, 2 mit Premium.", "Account check: 3/4 logins valid, 2 with premium."],
+    ["Aktive Accounts: 1/1 Login gültig, 1 mit Premium.", "Active accounts: 1/1 logins valid, 1 with premium."],
+    ["Alle Accounts: 2/5 Login gültig, 2 mit Premium.", "All accounts: 2/5 logins valid, 2 with premium."],
     ["Soll RapidGator wirklich aus der Accountliste entfernt werden?", "Remove RapidGator from the account list?"],
     ["Konflikte gelöst: 2 überschrieben, 3 übersprungen", "Conflicts resolved: 2 overwritten, 3 skipped"],
     ["DLC importiert: 2 Paket(e), 5 Link(s)", "DLC imported: 2 package(s), 5 link(s)"],