diff --git a/.gitea/workflows/dev-workshop.yml b/.gitea/workflows/dev-workshop.yml
index 548a367..925de28 100644
--- a/.gitea/workflows/dev-workshop.yml
+++ b/.gitea/workflows/dev-workshop.yml
@@ -7,8 +7,8 @@ on:
 
 env:
   STEAM_APP_ID: "107410"
-  HOST_REPO: /home/valmo/braf
-  HOST_CACHE: /home/valmo/braf-ci-cache/dev-workshop
+  HOST_REPO: /data/valmo/braf
+  HOST_CACHE: /data/valmo/braf-ci-cache/dev-workshop
   BRAF_CI_STAGE_DIR: dist/dev/@braf_dev
 
 jobs:
@@ -29,9 +29,9 @@ jobs:
         run: |
           set -euo pipefail
 
-          mkdir -p "$HOST_CACHE"
 
           docker run --rm -i \
+            --user root \
             -e BRAF_CI_STAGE_DIR \
             -e GIT_BEFORE \
             -e GIT_SHA \
@@ -46,7 +46,7 @@ jobs:
             -v "$HOST_REPO:/repo" \
             -v "$HOST_CACHE:/cache" \
             -v /var/run/docker.sock:/var/run/docker.sock \
-            docker.gitea.com/runner-images:ubuntu-latest \
+            valmo/braf-mikero:3.23.8.60 \
             bash -s <<'BRAF_CI'
           set -euo pipefail
 
@@ -65,22 +65,25 @@ jobs:
           }
 
           install_mikero() {
-            if [[ ! -x /cache/mikero-tools/bin/makepbo ]]; then
-              rm -rf /tmp/mikero-tools-action /cache/mikero-tools
-              mkdir -p /tmp/mikero-tools-action /cache/mikero-tools
-              curl -fsSL \
-                https://github.com/arma-actions/mikero-tools/archive/refs/heads/master.tar.gz \
-                -o /tmp/mikero-tools-action.tar.gz
-              tar -zxf /tmp/mikero-tools-action.tar.gz \
-                --strip-components=1 \
-                -C /tmp/mikero-tools-action
-              tar -xf /tmp/mikero-tools-action/linux/*.tar \
-                --strip-components=1 \
-                -C /cache/mikero-tools
+            export WINEPREFIX=/cache/mikero-wine
+            export WINEARCH=win64
+            export WINEDEBUG=-all
+
+            if ! command -v pboProject >/dev/null; then
+              echo "pboProject is missing from valmo/braf-mikero image." >&2
+              return 1
             fi
 
-            export PATH="/cache/mikero-tools/bin:$PATH"
-            export LD_LIBRARY_PATH="${LD_LIBRARY_PATH:-}:/cache/mikero-tools/lib"
+            if ! command -v winetricks >/dev/null; then
+              apt-get install -y winetricks
+            fi
+
+            if [[ ! -f "$WINEPREFIX/drive_c/windows/system32/mfc140u.dll" ]]; then
+              echo "Initializing the persistent Mikero Wine runtime."
+              xvfb-run -a winetricks -q vcrun2015
+            fi
+
+            sed -i "s#exec /usr/lib/wine/wine64#exec xvfb-run -a /usr/bin/wine#" /usr/local/bin/pboProject
           }
 
           is_zero_sha() {
@@ -179,7 +182,23 @@ jobs:
             git_auth lfs fetch origin "$GIT_SHA" --include="$include" --exclude="*"
             git lfs checkout "${changed_addons[@]}"
           else
-            echo "Only workshop metadata changed; using cached PBOs."
+            echo "Only workshop metadata changed; seeding any missing PBO cache entries."
+            mapfile -t changed_addons < <(
+              git ls-tree -d --name-only "$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" "$addon"
+                  fi
+                done
+            )
+            include=""
+            for addon in "${changed_addons[@]}"; do
+              include+="${include:+,}${addon}/**"
+            done
+            echo "Fetching LFS for cache seed: $include"
+            git_auth lfs fetch origin "$GIT_SHA" --include="$include" --exclude="*"
+            git lfs checkout "${changed_addons[@]}"
           fi
 
           build_args=(
diff --git a/make/ci_dev_workshop.py b/make/ci_dev_workshop.py
index 8515796..cc7bf50 100644
--- a/make/ci_dev_workshop.py
+++ b/make/ci_dev_workshop.py
@@ -352,14 +352,11 @@ def run_pboproject(addon: str, source_root: Path, output_dir: Path) -> None:
             "+O" if addon in obfuschatedList else "-O",
         ]
     else:
-        source = repo_root() / addon
-        fallback = output_dir / f"{addon}.pbo"
-        print(
-            "Mikero pboProject is not available; writing raw DEV PBO "
-            f"for {addon} at {fallback}"
+        raise RuntimeError(
+            "Mikero pboProject is required to build DEV Workshop PBOs. "
+            "The installed DePbo makepbo tool only creates a raw archive and "
+            "must not be published as a BRAF build."
         )
-        write_raw_pbo(addon, source, fallback)
-        return
 
     print(f"::group::Building {addon}")
     print(" ".join(cmd))
@@ -467,12 +464,14 @@ def main() -> int:
         source_root = Path(args.source_root).resolve()
     elif args.dry_run:
         source_root = (cache_dir / "mikero-source" / "braf").resolve()
-    elif not (shutil.which("pboproject") or shutil.which("pboProject")):
-        source_root = root
-    else:
+    elif shutil.which("pboproject") or shutil.which("pboProject"):
         source_root_addons = requested_addons if requested_addons is not None else addons
         source_root = prepare_mikero_source_root(root, cache_dir, source_root_addons).resolve()
-
+    else:
+        raise RuntimeError(
+            "Mikero pboProject is not installed. Refusing to stage or publish "
+            "raw PBO archives as a DEV Workshop build."
+        )
     current_hashes = {addon: addon_digest(root / addon) for addon in addons}
     manifest = load_manifest(manifest_path)
     manifest_addons = manifest.setdefault("addons", {})