worker: make/jq/gopls in base image + per-repo .lvmh/setup.sh hook (agent-driven persistent setup)

docker/worker.Dockerfile

@@ -5,10 +5,12 @@ FROM node:24-bookworm-slim
 
 RUN apt-get update \
   && apt-get install -y --no-install-recommends \
-    bash ca-certificates git ripgrep curl xz-utils \
+    bash ca-certificates git ripgrep curl xz-utils make jq \
     golang-go \
   && rm -rf /var/lib/apt/lists/*
 
+RUN GOBIN=/usr/local/bin go install golang.org/x/tools/gopls@latest || true
+
 RUN npm install -g --ignore-scripts @earendil-works/pi-coding-agent
 
 # User's pi config from dotfiles (settings, skills, agents, extensions,