feat(accounts): improve table controls and secure credential reveal

Add persistent keyboard-accessible column resizing and increase the action-column edge spacing. Disable the active-only refresh action when no enabled checkable account exists and move the account-enabled control below the daily limit field. Add an explicit trusted IPC path that reveals only the selected stored credential on demand, keeps credentials out of renderer snapshots and audit fields, clears dialog state on close, and supports native clipboard copying. Cover UI behavior, request validation, provider-specific credential lookup, preload forwarding, renderer-state secrecy, and IPC trust boundaries.

src/main/app-controller.ts

@@ -10,6 +10,8 @@ import {
   AccountCommand,
   AccountCommandResult,
   AccountCredentialCheckInput,
+  AccountSecretRequest,
+  AccountSecretResult,
   DebridAccountStatus,
   DebridProvider,
   DuplicatePolicy,
@@ -35,7 +37,7 @@ import { checkAllDebridAccounts, checkDebridLinkKey, checkMegaDebridAccount, che
 import { parseMegaDebridAccounts } from "../shared/mega-debrid-accounts";
 import { getMegaDebridAccountsForMode } from "../shared/mega-debrid-accounts";
 import { parseDebridLinkApiKeys } from "../shared/debrid-link-keys";
-import { applyAccountCommand } from "./account-commands";
+import { applyAccountCommand, resolveStoredAccountSecret } from "./account-commands";
 import { collectAccountStatusRedactionValues, sanitizeDebridAccountStatus, sanitizeDebridAccountStatuses } from "./account-status-sanitizer";
 import { createRendererState } from "./renderer-state";
 import { parseCollectorInput } from "./link-parser";
@@ -534,6 +536,12 @@ export class AppController {
     return { ...applied.response, ...state };
   }
 
+  public revealAccountSecret(request: AccountSecretRequest): AccountSecretResult {
+    const secret = resolveStoredAccountSecret(this.settings, request);
+    this.audit("INFO", "Gespeicherter Account-Zugang explizit angezeigt", { kind: request.kind });
+    return { secret };
+  }
+
   public async checkAccountCredentials(input: AccountCredentialCheckInput): Promise<DebridAccountStatus> {
     const redactions = collectAccountStatusRedactionValues(this.settings, input);
     if (input.kind === "realdebrid-api" || input.kind === "realdebrid-web") {