fix: use explicit runner label self-hosted:host to match registered v5-runner

.gitea/workflows/ci.yaml

@@ -22,7 +22,7 @@ jobs:
   # geïnstalleerd zijn en internet beschikbaar is.
   # ─────────────────────────────────────────────
   check:
-    runs-on: []
+    runs-on: self-hosted:host
     steps:
       - name: Checkout
         uses: actions/checkout@v5
@@ -61,7 +61,7 @@ jobs:
   # ─────────────────────────────────────────────
   tests-unit:
     needs: check
-    runs-on: []
+    runs-on: self-hosted:host
     steps:
       - name: Checkout
         uses: actions/checkout@v5
@@ -89,7 +89,7 @@ jobs:
 
   tests-integration:
     needs: check
-    runs-on: []
+    runs-on: self-hosted:host
     steps:
       - name: Checkout
         uses: actions/checkout@v5
@@ -105,7 +105,7 @@ jobs:
 
   tests-ui:
     needs: check
-    runs-on: []
+    runs-on: self-hosted:host
     steps:
       - name: Checkout
         uses: actions/checkout@v5
@@ -138,7 +138,7 @@ jobs:
   preflight:
     needs: [tests-unit, tests-integration, tests-ui]
     if: gitea.event_name == 'pull_request' || (gitea.event_name == 'push' && startsWith(gitea.ref, 'refs/heads/codex/'))
-    runs-on: []
+    runs-on: self-hosted:host
     steps:
       - name: Checkout
         uses: actions/checkout@v5
@@ -172,7 +172,7 @@ jobs:
   deploy:
     needs: [tests-unit, tests-integration, tests-ui]
     if: gitea.event_name == 'push' && (gitea.ref_name == 'main' || gitea.ref_name == 'master')
-    runs-on: []
+    runs-on: self-hosted:host
     steps:
       - name: Checkout
         uses: actions/checkout@v5