Skip CI if-and-only-if run from a non-fork PR

.github/workflows/ci.yml

@@ -24,31 +24,21 @@ env:
   LOCALE_ID: 'en-US'
 
 jobs:
-  check-run:
+  ci-conditions:
+    name: 'CI conditions'
     runs-on: 'ubuntu-latest'
     outputs:
-      should-skip: ${{ steps.check.outputs.should-skip }}
+      IS_FORK: ${{ github.repository_owner != 'getodk' }}
+      IS_PR: ${{ github.event_name == 'pull_request' }}
+
     steps:
-      - name: Check for duplicate push event with PR
-        id: check
-        if: github.event_name == 'push'
-        run: |
-          # Check if this push is tied to an open PR
-          PR_NUMBER=$(curl -s -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
-            "https://api.github.com/repos/${{ github.repository }}/commits/${{ github.sha }}/pulls" | \
-            jq -r '.[0].number // "none"')
-          if [ "$PR_NUMBER" != "none" ]; then
-            echo "This push (commit ${{ github.sha }}) is part of PR #$PR_NUMBER, skipping to avoid duplication with pull_request event."
-            echo "should-skip=true" >> $GITHUB_OUTPUT
-            exit 0
-          else
-            echo "No associated PR found, proceeding with CI for this push."
-            echo "should-skip=false" >> $GITHUB_OUTPUT
-          fi
+      - name: Capture CI conditions
+        id: capture-ci-conditions
+        run: exit 0
 
   install-and-build:
-    needs: check-run
-    if: ${{ needs.check-run.outputs.should-skip != 'true' }}
+    needs: ci-conditions
+    if: ${{ needs.ci-conditions.outputs.IS_PR != 'true' || needs.ci-conditions.outputs.IS_FORK == 'true' }}
     name: 'Install dependencies and build packages'
     runs-on: 'ubuntu-latest'