v1.0.20: fix button icons and surface user-fetch errors

- Remove stale idle.svg/running.svg from zip (were shadowing the PNG
  icons added in v1.0.15, causing old grey icons to show instead of
  the Aurora timer images)
- Fix package script to always delete and recreate zip so removed files
  don't persist across builds
- Show a clear error in the name dropdown when fetchUsers fails (e.g.
  Notion integration missing "Read user information" capability)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package.json

@@ -4,7 +4,7 @@
   "description": "Notion time tracking toggle for Stream Deck",
   "scripts": {
     "build": "esbuild src/plugin.ts --bundle --platform=node --target=node20 --outfile=com.pdma.notion-timer.sdPlugin/bin/plugin.js --external:electron && node scripts/sign.js",
-    "package": "npm run build && zip -r notion-timer.streamDeckPlugin com.pdma.notion-timer.sdPlugin && echo 'Packaged: notion-timer.streamDeckPlugin'",
+    "package": "npm run build && rm -f notion-timer.streamDeckPlugin && zip -r notion-timer.streamDeckPlugin com.pdma.notion-timer.sdPlugin && echo 'Packaged: notion-timer.streamDeckPlugin'",
     "dev": "esbuild src/plugin.ts --bundle --platform=node --target=node20 --outfile=com.pdma.notion-timer.sdPlugin/bin/plugin.js --external:electron --watch",
     "sign": "node scripts/sign.js",
     "link": "ln -sf \"$(pwd)/com.pdma.notion-timer.sdPlugin\" \"$HOME/Library/Application Support/com.elgato.StreamDeck/Plugins/com.pdma.notion-timer.sdPlugin\"",