refactor(ts): complete legacy host removal — drop fastify/commander/zod, delete MCP SDK server, remove ManagedRuntime facades

Finishes the remaining EFFECT_NATIVE_REWRITE_PLAN stages in one verified slice:
- fastify, @fastify/websocket, commander, zod removed from all package manifests
- legacy @modelcontextprotocol/sdk stdio server deleted; effect/unstable/ai McpServer is canonical
- no ManagedRuntime or Effect.runPromise program facades remain in production source
- gateway server/rpc-contract and client rpc/socket moved onto Effect v4 native http/rpc/socket layers

Gates (force-run, no cache): check:tsgo, build, test (96 tests / 11 tasks) all green.
Native-class inventory: zero blocking production classes.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

ts/packages/workbench/src/pages/settings.tsx

@@ -266,8 +266,10 @@ export default function SettingsPage() {
             </button>
             <button
               onClick={() => {
-                if (collectionForm.id.trim().length === 0) return;
+                const collectionId = collectionForm.id.trim();
+                if (collectionId.length === 0) return;
                 createCollection(collectionForm);
+                setField({ key: "collection", value: collectionId });
                 setCollectionForm({ id: "", name: "", description: "", tags: "", submitting: false });
                 setCreateOpen(false);
               }}