Reword short description to lead with the output, not the tech

Old: Download, transcribe, and summarize YouTube videos and podcasts
     with AI.
New: Turn videos and podcasts into structured topic summaries with
     clickable timestamps.

Updated in both the StartOS manifest (startos/manifest/i18n.ts) and
the registry card (startos-registry/packages/recap/package.json).

startos-registry/packages/recap/package.json

@@ -3,7 +3,7 @@
   "title": "Recap",
   "version": "0.1.18:0",
 
-  "descriptionShort": "Download, transcribe, and summarize YouTube videos and podcasts with AI.",
+  "descriptionShort": "Turn videos and podcasts into structured topic summaries with clickable timestamps.",
   "descriptionLong": "Recap downloads audio from YouTube videos and podcast RSS feeds, transcribes them using Google Gemini, and produces structured topic-by-topic summaries with timestamps. Features include channel and podcast subscriptions with automatic new episode detection, a background processing queue with configurable delays, auto-download per subscription, organized history with folders, and a responsive web interface. Requires a Google Gemini API key (free tier available at aistudio.google.com/apikey).",
 
   "license": "Proprietary",

startos/manifest/i18n.ts

@@ -1,6 +1,6 @@
 export const short = {
   en_US:
-    'Download, transcribe, and summarize YouTube videos and podcasts with AI.',
+    'Turn videos and podcasts into structured topic summaries with clickable timestamps.',
 }
 
 export const long = {