Add the workspace coding agent, launch gate, and composable locks

- run a singleton Codex App Server adapter in each dev workspace
- gate Web Studio with a reloadable fragment-token to HttpOnly-session exchange
- add ChatGPT device login and streamed chat to Web Studio
- isolate authoring access in a declarative NixOS service account
- split Web Studio canvas, object, panel, and model concerns
- check generated Quixos protocol clients for drift
- resolve same-repository quixos.lock fragments deterministically
- preserve the collaborative canvas gesture fixes

test/fixtures/component-runtime.package.qx

@@ -0,0 +1,10 @@
+import interface Named;
+external atom Project id "atom:project";
+external atom ProjectComponent id "atom:project-component";
+
+package ComponentRuntime id "package:component-runtime" revision "package:component-runtime@1" {
+  constructor createComponent id "export:component-runtime:create-component" constructs ProjectComponent : atom-ref<Project>;
+  operation propsGet id "export:component-runtime:props-get" : unit -> string mode call receiver atom ProjectComponent requires {
+    interface project id "port:component:project" : Named;
+  };
+}