fix: use relative vendor path and add cache verification

Author: arman-bd

.github/workflows/_benchmark.yml

@@ -79,8 +79,8 @@ jobs:
       id: cache-vendor
       uses: actions/cache@v4
       with:
-        path: ${{ github.workspace }}/vendor
-        key: vendor-${{ runner.os }}-${{ hashFiles('scripts/setup_vendors.sh') }}-v6
+        path: vendor
+        key: vendor-${{ runner.os }}-${{ hashFiles('scripts/setup_vendors.sh') }}-v7
         restore-keys: |
           vendor-${{ runner.os }}-
 

.github/workflows/_test.yml

@@ -157,8 +157,8 @@ jobs:
       id: cache-vendor
       uses: actions/cache@v4
       with:
-        path: ${{ github.workspace }}/vendor
-        key: vendor-${{ runner.os }}-${{ hashFiles('scripts/setup_vendors.sh') }}-v6
+        path: vendor
+        key: vendor-${{ runner.os }}-${{ hashFiles('scripts/setup_vendors.sh') }}-v7
         restore-keys: |
           vendor-${{ runner.os }}-
 
@@ -169,6 +169,13 @@ jobs:
         ./scripts/setup_vendors.sh
       shell: bash
 
+    - name: Verify vendor directory for caching
+      run: |
+        echo "Checking vendor directory contents..."
+        ls -lah vendor/ || echo "vendor directory not found"
+        du -sh vendor/ 2>/dev/null || echo "Cannot get vendor size"
+      shell: bash
+
     - name: Cache Python build artifacts
       uses: actions/cache@v4
       with: