Rename plugin from "ralph-wiggum" to "ralph-loop"

Update all internal references to use "Ralph Loop" as the prominent name
Keep explanatory text noting it "implements the Ralph Wiggum technique"
Rename plugin directory from plugins/ralph-wiggum to plugins/ralph-loop
Update marketplace.json with new plugin name and source path
Update plugin-dev documentation references

.github/workflows/close-external-prs.yml

@@ -4,34 +4,26 @@ on:
   pull_request_target:
     types: [opened]
 
-permissions:
-  pull-requests: write
-  issues: write
-
 jobs:
   check-membership:
     if: vars.DISABLE_EXTERNAL_PR_CHECK != 'true'
     runs-on: ubuntu-latest
     steps:
-      - name: Check if author has write access
+      - name: Check if author is org member
         uses: actions/github-script@v7
         with:
           script: |
+            const org = 'anthropics';
             const author = context.payload.pull_request.user.login;
 
-            const { data } = await github.rest.repos.getCollaboratorPermissionLevel({
+            try {
-              owner: context.repo.owner,
+              await github.rest.orgs.checkMembershipForUser({
-              repo: context.repo.repo,
+                org: org,
                 username: author
               });
-
+              console.log(`${author} is an org member, allowing PR`);
-            if (['admin', 'write'].includes(data.permission)) {
+            } catch (e) {
-              console.log(`${author} has ${data.permission} access, allowing PR`);
+              if (e.status === 404) {
-              return;
-            }
-
-            console.log(`${author} has ${data.permission} access, closing PR`);
-
                 await github.rest.issues.createComment({
                   owner: context.repo.owner,
                   repo: context.repo.repo,
@@ -45,3 +37,7 @@ jobs:
                   pull_number: context.payload.pull_request.number,
                   state: 'closed'
                 });
+
+                console.log(`Closed PR from external contributor: ${author}`);
+              }
+            }