fix: speed up claude-dev base image availability

Switch claude-dev to node:20-bookworm-slim and preload the base image from server2 in CI to avoid slow pulls on the NAS runner.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitea/workflows/deploy-claude-dev-dev.yml

@@ -52,6 +52,12 @@ jobs:
           echo "CLAUDE_DEV_IMAGE_TAG=${image_tag}" >> "$GITHUB_ENV"
           echo "CLAUDE_DEV_IMAGE=${image_ref}" >> "$GITHUB_ENV"
 
+      - name: Preload base image from server2
+        if: env.ROLLBACK_ONLY == '0'
+        run: |
+          set -euo pipefail
+          ssh -o StrictHostKeyChecking=accept-new server2 "podman pull docker.io/library/node:20-bookworm-slim >/dev/null && podman save docker.io/library/node:20-bookworm-slim" | docker load
+
       - name: Build claude-dev image
         if: env.ROLLBACK_ONLY == '0'
         run: |

claude-dev/Dockerfile

@@ -1,4 +1,4 @@
-FROM node:20-bookworm
+FROM node:20-bookworm-slim
 
 ENV DEBIAN_FRONTEND=noninteractive