fix(ci): add @framers/agentos-extensions-registry as devDependency

The extensions-registry module is dynamically imported in
CapabilityDiscoveryInitializer, ToolOrchestrator, and
DiscoverCapabilitiesTool. With moduleResolution: "Bundler", ambient
module declarations in vendor.d.ts are not sufficient for import()
type expressions — the package must be resolvable on disk. Adding it
as a devDependency ensures tsc can resolve the type-level imports
during CI builds.

Author: jddunn

package.json

@@ -226,6 +226,7 @@
   },
   "devDependencies": {
     "@eslint/js": "^9.11.0",
+    "@framers/agentos-extensions-registry": "^0.14.1",
     "@opentelemetry/context-async-hooks": "^2.0.1",
     "@opentelemetry/sdk-metrics": "^2.0.1",
     "@opentelemetry/sdk-trace-base": "^2.0.1",