pods: use CDN spec repo; CI: robust pod install with repo update + clean lock/cache on retry

Author: arnabwahid

.github/workflows/ci.yml

@@ -76,8 +76,17 @@ jobs:
             ${{ runner.os }}-derived-
 
       - name: Pod install
+        shell: bash
         run: |
-          pod install --repo-update --silent || pod install
+          set -euo pipefail
+          pod repo update
+          if ! pod install --repo-update; then
+            echo "pod install failed; cleaning lock/cache and retrying..."
+            rm -f Podfile.lock
+            rm -rf Pods
+            pod cache clean --all || true
+            pod install --repo-update
+          fi
 
       - name: Detect project or workspace
         shell: bash

Podfile

@@ -1,3 +1,5 @@
+source 'https://cdn.cocoapods.org/'
+
 platform :osx, '10.11'
 
 target 'Avro Keyboard' do