diff --git a/.github/workflows/ui-build-self-hosted.yml b/.github/workflows/ui-build-self-hosted.yml
new file mode 100644
index 000000000..e5d576cda
--- /dev/null
+++ b/.github/workflows/ui-build-self-hosted.yml
@@ -0,0 +1,43 @@
+name: UI Build (self-hosted)
+
+on:
+  workflow_call:
+
+jobs:
+  build:
+    runs-on: [self-hosted, fast]
+    env:
+      BRANCH_NAME: ${{ github.head_ref || github.ref_name }}
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v6
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: "24"
+          cache: "npm"
+          cache-dependency-path: "tools/ui/package-lock.json"
+
+      - name: Install dependencies
+        run: npm ci
+        working-directory: tools/ui
+
+      - name: Build application
+        run: npm run build
+        working-directory: tools/ui
+
+      - name: Generate checksums
+        run: |
+          cd tools/ui/dist
+          for f in *; do
+            sha256sum "$f" | awk '{print $1, $2}' >> checksums.txt
+          done
+
+      - name: Upload built UI
+        uses: actions/upload-artifact@v6
+        with:
+          name: ui-build
+          path: tools/ui/dist/
+          retention-days: 1
diff --git a/.github/workflows/ui-build.yml b/.github/workflows/ui-build.yml
index 2653afd06..92b0573fb 100644
--- a/.github/workflows/ui-build.yml
+++ b/.github/workflows/ui-build.yml
@@ -5,7 +5,7 @@ on:
 
 jobs:
   build:
-    runs-on: [self-hosted, fast]
+    runs-on: ubuntu-slim
     env:
       BRANCH_NAME: ${{ github.head_ref || github.ref_name }}
 
diff --git a/.github/workflows/ui-self-hosted.yml b/.github/workflows/ui-self-hosted.yml
index 8a97a8284..5457d900c 100644
--- a/.github/workflows/ui-self-hosted.yml
+++ b/.github/workflows/ui-self-hosted.yml
@@ -16,7 +16,7 @@ on:
       - master
     paths: [
       '.github/workflows/ui-self-hosted.yml',
-      '.github/workflows/ui-build.yml',
+      '.github/workflows/ui-build-self-hosted.yml',
       'tools/ui/**.*',
       'tools/server/tests/**.*'
     ]
@@ -24,7 +24,7 @@ on:
     types: [opened, synchronize, reopened]
     paths: [
       '.github/workflows/ui-self-hosted.yml',
-      '.github/workflows/ui-build.yml',
+      '.github/workflows/ui-build-self-hosted.yml',
       'tools/ui/**.*',
       'tools/server/tests/**.*'
     ]
@@ -42,7 +42,7 @@ concurrency:
 jobs:
   ui-build:
     name: Build static output
-    uses: ./.github/workflows/ui-build.yml
+    uses: ./.github/workflows/ui-build-self-hosted.yml
 
   ui-checks:
     name: Checks