Unblock deploys: follow ext-skills repo rename and fix #168 fallout

Deploys have failed since #178 because experimental-ext-skills was renamed
to ext-skills on GitHub and the stale RepositoryCollaborators state 404s on
update. Point config at the new name and drop the old resource from state
before 'make up' (same approach as #126; remove after one green deploy).

#168 also referenced SKILLS_OVER_MCP_IG, which #170 had renamed to
SKILLS_OVER_MCP_WG, and left tobi-oye out of sort order, breaking tsc and
'npm run check'.

src/config/repoAccess.ts

@@ -340,7 +340,7 @@ export const REPOSITORY_ACCESS: RepositoryAccess[] = [
     ],
   },
   {
-    repository: 'experimental-ext-skills',
+    repository: 'ext-skills',
     teams: [
       { team: 'core-maintainers', permission: 'admin' },
       { team: 'moderators', permission: 'maintain' },

src/config/users.ts

@@ -863,16 +863,15 @@ export const MEMBERS: readonly Member[] = [
     github: 'tiginamaria',
     memberOf: [ROLE_IDS.KOTLIN_SDK],
   },
-  {
-
-    github: 'tobi-oye',
-    discord: '791307404293177354',
-    memberOf: [ROLE_IDS.SKILLS_OVER_MCP_IG],
-  },
   {
     github: 'tnorimat',
     memberOf: [ROLE_IDS.CONFORMANCE_AUTH],
   },
+  {
+    github: 'tobi-oye',
+    discord: '791307404293177354',
+    memberOf: [ROLE_IDS.SKILLS_OVER_MCP_WG],
+  },
   {
     github: 'tobinsouth',
     discord: '865072069779521556',