Bootstrap empty DEV PBO cache

.gitea/workflows/dev-workshop.yml

@@ -147,6 +147,20 @@ jobs:
             fi
           fi
 
+          if ! find /cache/pbo/addons -maxdepth 1 -name '*.pbo' -print -quit 2>/dev/null | grep -q .; then
+            echo "PBO cache is empty; bootstrapping all buildable addons."
+            mapfile -t changed_addons < <(
+              git ls-tree -d --name-only "$GIT_SHA" |
+                awk '/^braf_/ {print}' |
+                while read -r addon; do
+                  if git cat-file -e "$GIT_SHA:$addon/config.cpp" 2>/dev/null; then
+                    printf '%s\n' "$addon"
+                  fi
+                done
+            )
+            metadata_changed=true
+          fi
+
           if [[ "${#changed_addons[@]}" -eq 0 && "$metadata_changed" != "true" ]]; then
             echo "No addon or workshop metadata changes detected; skipping DEV Workshop deploy."
             exit 0