chore: remove homelab CI workflow

- Removed .gitea/workflows/build-runner-node.yml
- Homelab is GitOps only, not a buildable artifact
- Runner images managed via direct Dockerfile edits + manual pushes

.gitea/workflows/build-runner-node.yml

@@ -1,45 +0,0 @@
-name: Build forgejo-runner-node image
-
-on:
-  push:
-    paths:
-      - 'k8s/infra/forgejo-runner/Dockerfile.node'
-    branches:
-      - main
-
-jobs:
-  build:
-    runs-on: golang
-    env:
-      REGISTRY: forgejo.riotpiao.com
-      IMAGE: forgejo.riotpiao.com/rock/forgejo-runner-node
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Get short SHA
-        id: sha
-        run: |
-          SHORT_SHA=$(git rev-parse --short HEAD)
-          echo "short_sha=${SHORT_SHA}" >> $GITHUB_OUTPUT
-
-      - name: Registry login
-        run: |
-          echo "${REGISTRY_TOKEN}" | docker login "${REGISTRY}" \
-            --username "${REGISTRY_USER}" --password-stdin
-        env:
-          REGISTRY_USER: ${{ secrets.FORGEJO_REGISTRY_USER }}
-          REGISTRY_TOKEN: ${{ secrets.FORGEJO_REGISTRY_TOKEN }}
-
-      - name: Build image
-        run: |
-          docker build -f k8s/infra/forgejo-runner/Dockerfile.node \
-            -t "${IMAGE}:${{ steps.sha.outputs.short_sha }}" \
-            -t "${IMAGE}:latest" \
-            .
-
-      - name: Push image
-        run: |
-          docker push "${IMAGE}:${{ steps.sha.outputs.short_sha }}"
-          docker push "${IMAGE}:latest"
-          echo "✓ Image pushed: ${IMAGE}:${{ steps.sha.outputs.short_sha }}"

k8s/infra/forgejo-runner/values.yaml

@@ -61,6 +61,6 @@ gc:
   enabled: true
   schedule: "*/30 * * * *"     # every 30 minutes
   image: alpine/k8s:1.31.0
-  pruneAge: "72h"              # Docker artifacts unused longer than this get pruned
-  pruneAgeHours: 72             # Same as pruneAge but numeric for date arithmetic in shell
+  pruneAge: "30m"              # Docker artifacts unused longer than this get pruned
+  pruneAgeHours: 0.5            # Same as pruneAge but numeric for date arithmetic in shell
   actcacheMaxAgeDays: 1        # actcache files older than N days (aggressive for heavy Rust cargo builds)