fix(realdebrid): persist web status and report relevant provider errors

Check Real-Debrid API and browser sessions through the account status flow, retain the service status across settings updates, and refresh the account row when a browser login is detected. Exclude unavailable providers that were never attempted from conversion failures and prevent aggregated fallback text from being mislabeled as a Debrid-Link terminal error. Bump the development version to 2.0.37 and add focused regression coverage.

tests/provider-error-classification.test.ts

@@ -0,0 +1,16 @@
+import { describe, expect, it } from "vitest";
+import { parseDebridLinkTerminalFailure } from "../src/main/download-manager";
+
+describe("provider error classification", () => {
+  it("does not relabel an aggregated Real-Debrid failure as Debrid-Link", () => {
+    const message = "Error: Unrestrict fehlgeschlagen: Mega-Debrid nicht verfuegbar (alle aktiven Accounts deaktiviert oder ausgeschopft) | Debrid-Link nicht verfuegbar (alle aktiven API-Keys deaktiviert oder ausgeschopft) | Real-Debrid: traffic_exhausted";
+
+    expect(parseDebridLinkTerminalFailure(message)).toBeNull();
+  });
+
+  it("still recognizes a direct Debrid-Link terminal failure", () => {
+    expect(parseDebridLinkTerminalFailure("Debrid-Link nicht verfuegbar: kein aktiver API-Key")).toMatchObject({
+      kind: "no_active_key"
+    });
+  });
+});