Save in-progress keysat integration and StartOS 0.4 work

Snapshot of the working tree before cleanup. Captures:
- Keysat licensing: server/license.js, /api/license/* endpoints in
  server/index.js, activation modal in public/index.html, embedded
  Ed25519 issuer key (assets/issuer.pub).
- StartOS 0.4 expansion: setApiKey action, version files v0.1.1
  through v0.1.15, file-models/config.json.ts, manifest updates.
- Self-hosted registry server (startos-registry/).
- Build/deploy scripts (bin/bump-version.sh, bin/deploy.sh, vendored
  yt-dlp binary), .gitignore, .deploy.env.example.
- Recent design docs (KEYSAT_INTEGRATION.md, UPGRADE-DESIGN.md) —
  retained here so they remain recoverable when removed in the
  follow-up cleanup commit.

startos-registry/packages/youtube-summarizer/package.json

@@ -0,0 +1,39 @@
+{
+  "id": "youtube-summarizer",
+  "title": "YouTube Summarizer",
+  "version": "0.1.4:0",
+
+  "descriptionShort": "Download, transcribe, and summarize YouTube videos and podcasts with AI.",
+  "descriptionLong": "YouTube Summarizer 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",
+  "categories": ["AI", "Media"],
+
+  "upstreamRepo": "https://ten31.xyz",
+  "packageRepo": "https://ten31.xyz",
+  "marketingUrl": "https://ten31.xyz",
+  "donationUrl": null,
+
+  "images": {
+    "main": {
+      "arch": ["x86_64", "aarch64"]
+    }
+  },
+
+  "dependencies": {},
+  "dependencyMetadata": {},
+
+  "releaseNotes": {
+    "0.1.0:0": "Initial release. Download, transcribe, and summarize YouTube videos and podcasts using Google Gemini AI.",
+    "0.1.4:0": "Latest stable release."
+  },
+
+  "alerts": {
+    "install": "After installing, configure your Google Gemini API key using the 'Set Gemini API Key' action in the service menu. A free API key is available at aistudio.google.com/apikey. Note: The embedded YouTube player will not work if you are connected to a VPN.",
+    "update": null,
+    "uninstall": null,
+    "restore": null,
+    "start": null,
+    "stop": null
+  }
+}