Add more debug output: key-file, path input, expanded path, and archive path on save

action.yaml

@@ -1,5 +1,5 @@
-name: 'Cache Restore'
-description: 'Restore cache from tar.xz archive on the runner filesystem'
+name: 'Cache Save'
+description: 'Save cache as tar.xz archive on the runner filesystem'
 inputs:
   path:
     description: 'Directory to cache'
@@ -11,15 +11,10 @@ inputs:
   key-file:
     description: 'File to hash for the cache key'
     required: true
-outputs:
-  cache-hit:
-    description: 'true if exact key match found, false otherwise'
-    value: ${{ steps.restore.outputs.cache-hit }}
 runs:
   using: "composite"
   steps:
-    - name: Restore cache
-      id: restore
+    - name: Save cache
       shell: bash
       run: |
         CACHE_DIR="$HOME/.cache/.cache-store"
@@ -34,15 +29,13 @@ runs:
         echo "Key file: ${{ inputs.key-file }}"
         echo "Path input: ${{ inputs.path }}"
         echo "Expanded path: ${EXPANDED_PATH}"
-        echo "Cache key: ${CACHE_KEY}"
         echo "Archive path: ${ARCHIVE}"
 
-        if [ -f "$ARCHIVE" ]; then
-          echo "Cache hit: ${CACHE_KEY}"
-          mkdir -p "$EXPANDED_PATH"
-          tar -xf "$ARCHIVE" -C "/" 2>/dev/null || true
-          echo "cache-hit=true" >> $GITHUB_OUTPUT
-        else
-          echo "Cache miss: ${CACHE_KEY}"
-          echo "cache-hit=false" >> $GITHUB_OUTPUT
+        if [ ! -d "$EXPANDED_PATH" ] || [ -z "$(ls -A "$EXPANDED_PATH" 2>/dev/null)" ]; then
+          echo "Cache directory empty, skipping save"
+          exit 0
         fi
+
+        echo "Saving cache: ${CACHE_KEY}"
+        REL_PATH="$(echo "$EXPANDED_PATH" | sed 's|^/||')"
+        tar -cJf "$ARCHIVE" -C "/" "$REL_PATH" 2>/dev/null && echo "Cache saved" || echo "Cache save failed"