feat(audit): Batch 25 — project reorg (CC12), leading DI args (CC7), CC10 by-design

CC12: renderer views/ (5 screens + Onboarding + settings cards) +
lib/ (theme/thumb/datetime/id/qualityOptions/useClipboardLink/queueStats);
main core/ (buildArgs/validation/indexerCore/ytdlpPolicy). git mv preserved
history; all src+test imports updated. Build emits view chunks from views/,
344 tests + typecheck green, live probe rendered all screens.
CC7: wc/onProgress is the leading arg everywhere — downloadAppUpdate(wc,url),
indexSource(onProgress,url,signal), indexSourceCancelable(onProgress,url).
CC10: closed by-design — jsonStore backs all records; settings stay in
electron-store for DPAPI secret encryption (a deliberate two-store split).
Also closes the UI24/W4 context-menu cross-reference.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/main/ipc.ts

@@ -101,7 +101,7 @@ export function registerIpcHandlers(getMainWindow: () => BrowserWindow | null):
 
   ipcMain.handle(IpcChannels.appUpdateCheck, () => checkForAppUpdate())
   ipcMain.handle(IpcChannels.appUpdateDownload, (e, url: string) =>
-    downloadAppUpdate(url, e.sender)
+    downloadAppUpdate(e.sender, url)
   )
   ipcMain.handle(IpcChannels.appUpdateCancel, () => cancelAppUpdate())
   ipcMain.handle(IpcChannels.appUpdateRun, (_e, filePath: string) => runAppUpdate(filePath))
@@ -253,16 +253,16 @@ export function registerIpcHandlers(getMainWindow: () => BrowserWindow | null):
   // Indexing pushes live progress to the requesting renderer over `indexProgress`
   // and resolves with the final result.
   ipcMain.handle(IpcChannels.sourceIndex, (e, url: string) =>
-    indexSourceCancelable(url, (p) => {
+    indexSourceCancelable((p) => {
       if (!e.sender.isDestroyed()) e.sender.send(IpcChannels.indexProgress, p)
-    })
+    }, url)
   )
   ipcMain.handle(IpcChannels.sourceReindex, (e, id: string) => {
     const src = getSource(id)
     if (!src) return { ok: false, error: 'Source not found.' }
-    return indexSourceCancelable(src.url, (p) => {
+    return indexSourceCancelable((p) => {
       if (!e.sender.isDestroyed()) e.sender.send(IpcChannels.indexProgress, p)
-    })
+    }, src.url)
   })
   // Abort the in-flight index/reindex walk (kills the current probe child). (B2)
   ipcMain.handle(IpcChannels.sourceIndexCancel, () => cancelIndexing())