Initial commit: AeroFetch — yt-dlp/YouTube downloader for Windows

Electron + React (Fluent UI) desktop frontend for yt-dlp:
- Download queue with live progress, concurrency cap, cancel/retry
- Format/quality picker via yt-dlp probe; audio extraction to MP3
- Settings + history persistence (electron-store / JSON)
- Clipboard link auto-detect; persisted light/dark theme
- NSIS + portable packaging (binaries bundled at build time, not in git)

UI: "Studio" sidebar layout with a toffee-brown theme (light + neutral dark).
Dropdowns use a native <select> and tooltips a CSS-only Hint, to avoid a
dev-machine GPU overlay flicker/blank issue.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/main/settings.ts

@@ -0,0 +1,38 @@
+import { app } from 'electron'
+import Store from 'electron-store'
+import type { Settings } from '@shared/ipc'
+
+const DEFAULTS: Settings = {
+  outputDir: '', // resolved to the OS Downloads folder on first read
+  defaultKind: 'video',
+  defaultVideoQuality: 'Best available',
+  defaultAudioQuality: 'Best (MP3)',
+  maxConcurrent: 2,
+  filenameTemplate: '%(title)s.%(ext)s',
+  theme: 'light',
+  clipboardWatch: true
+}
+
+// Constructed lazily — electron-store needs app paths, which exist only after
+// the app is ready (all callers run post-ready).
+let store: Store<Settings> | null = null
+function getStore(): Store<Settings> {
+  if (!store) store = new Store<Settings>({ name: 'settings', defaults: DEFAULTS })
+  return store
+}
+
+export function getSettings(): Settings {
+  const s = getStore()
+  // Fill in the real Downloads path the first time, and persist it.
+  if (!s.get('outputDir')) s.set('outputDir', app.getPath('downloads'))
+  return s.store
+}
+
+export function setSettings(partial: Partial<Settings>): Settings {
+  const s = getStore()
+  ;(Object.keys(partial) as (keyof Settings)[]).forEach((key) => {
+    const value = partial[key]
+    if (value !== undefined) s.set(key, value)
+  })
+  return getSettings()
+}