feat: add upload schedule windows

Add local weekly upload windows with overnight support, live settings updates, and a shared abortable upload gate.

Keep active transfers running while queued jobs wait outside the window without consuming attempts or parallel slots. Validate and localize the automation settings in German and English, including next-start status and hidden Electron coverage.

lib/config-store.js

@@ -2,6 +2,7 @@ const fs = require('fs');
 const path = require('path');
 const secretStore = require('./secret-store');
 const { normalizeLogMode } = require('./log-mode');
+const { normalizeUploadSchedule } = require('./upload-schedule');
 
 const HOSTER_SETTINGS_DEFAULTS = {
   retries: 3,
@@ -84,6 +85,12 @@ const DEFAULTS = {
       matchMode: 'all',
       conditions: []
     },
+    uploadSchedule: {
+      enabled: false,
+      weekdays: [1, 2, 3, 4, 5, 6, 0],
+      start: '00:00',
+      end: '23:59'
+    },
     showDropTarget: false,
     globalMaxSpeedKbs: 0, // 0 = unlimited global speed
     pendingQueue: null,
@@ -559,6 +566,7 @@ class ConfigStore {
       // Downstream readers consume logMode only and must NOT derive from
       // sessionLog at call sites.
       globalSettings.logMode = normalizeLogMode(globalSettings);
+      globalSettings.uploadSchedule = normalizeUploadSchedule(globalSettings.uploadSchedule);
       const rotationCursors = (data.rotationCursors && typeof data.rotationCursors === 'object' && !Array.isArray(data.rotationCursors))
         ? data.rotationCursors
         : {};
@@ -588,6 +596,7 @@ class ConfigStore {
     const hosters = this._clone(config.hosters || {});
     const globalSettings = this._clone(config.globalSettings || {});
     delete globalSettings.allowPlaintextCredentialStorage;
+    globalSettings.uploadSchedule = normalizeUploadSchedule(globalSettings.uploadSchedule);
     secretStore.encryptCredentials({ hosters });
     return JSON.stringify({ ...config, globalSettings, hosters }, null, 2);
   }