Reconcile app.json to canonical One Name vscode-cowriting-plugin

The Gitea repos are canonically benstull/vscode-cowriting-plugin and
benstull/vscode-cowriting-plugin-content; the prior remotes used stale
vs-code-/vs-cowriting- aliases. Adopt the canonical names as the One Name.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app.json

@@ -1,12 +1,12 @@
 {
   "schemaVersion": "1.0",
-  "name": "vs-code-cowriting-plugin",
+  "name": "vscode-cowriting-plugin",
   "title": "VS Code Coauthoring Plugin — inner-loop human+machine coauthoring on Cline",
   "giteaHost": "ssh://git@git.benstull.org",
   "repos": [
     {
       "namespace": "benstull",
-      "name": "vs-code-cowriting-plugin",
+      "name": "vscode-cowriting-plugin",
       "contains": ["code", "specs", "documentation", "roadmap", "sessions"],
       "sessions": {
         "subdir": "sessions",
@@ -18,7 +18,7 @@
     },
     {
       "namespace": "benstull",
-      "name": "vs-cowriting-plugin-content",
+      "name": "vscode-cowriting-plugin-content",
       "contains": ["content"]
     }
   ]