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/node_modules/negotiator/package.json

@@ -0,0 +1,42 @@
+{
+  "name": "negotiator",
+  "description": "HTTP content negotiation",
+  "version": "0.6.3",
+  "contributors": [
+    "Douglas Christopher Wilson <doug@somethingdoug.com>",
+    "Federico Romero <federico.romero@outboxlabs.com>",
+    "Isaac Z. Schlueter <i@izs.me> (http://blog.izs.me/)"
+  ],
+  "license": "MIT",
+  "keywords": [
+    "http",
+    "content negotiation",
+    "accept",
+    "accept-language",
+    "accept-encoding",
+    "accept-charset"
+  ],
+  "repository": "jshttp/negotiator",
+  "devDependencies": {
+    "eslint": "7.32.0",
+    "eslint-plugin-markdown": "2.2.1",
+    "mocha": "9.1.3",
+    "nyc": "15.1.0"
+  },
+  "files": [
+    "lib/",
+    "HISTORY.md",
+    "LICENSE",
+    "index.js",
+    "README.md"
+  ],
+  "engines": {
+    "node": ">= 0.6"
+  },
+  "scripts": {
+    "lint": "eslint .",
+    "test": "mocha --reporter spec --check-leaks --bail test/",
+    "test-ci": "nyc --reporter=lcov --reporter=text npm test",
+    "test-cov": "nyc --reporter=html --reporter=text npm test"
+  }
+}