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

docker/README.md

@@ -0,0 +1,28 @@
+# docker/ — worker image & bridge
+
+## lvmh-worker image (`worker.Dockerfile`)
+
+Headless pi worker: node 24, pi (global npm), golang, git, ripgrep, make, jq,
+gopls, plus the user's pi config baked from dotfiles (`deploy/rsync-pi-agent.sh`:
+settings/skills/agents/extensions; no auth.json/sessions/cache; `git:` packages
+dropped — postinstalls crash headless installs).
+
+## Per-repo setup hook (agent-driven image setup)
+
+The agent works as root with network access, so it can `apt-get install` /
+`go install` anything **in-session**. Containers are ephemeral, so system
+packages vanish on container stop. For durability, a repo can ship:
+
+    /workspace/.lvmh/setup.sh
+
+The bridge (`bridge/index.mjs`) runs it with bash on **every spawn** before the
+pi session starts (10-min timeout, failure is non-fatal — logged, session
+continues). Since `/workspace` is a persistent per-repo volume, the hook
+survives container death. Agents that need extra tooling should write that
+script into the repo (e.g. `apt-get update && apt-get install -y sqlite3`).
+
+## bridge/index.mjs
+
+Hosts the SDK session (`createAgentSession` + `bindExtensions({mode:"rpc"})` —
+the SDK never fires `session_start` without the explicit bind, and the lvmh
+plugin dials home off that event).

docker/bridge/index.mjs

@@ -2,13 +2,51 @@
 // at /root/.pi/agent/extensions/lvmh-agent.ts) dials the daemon and delivers
 // web prompts through pi.sendUserMessage. This process just hosts the session.
 // Global npm layout: resolve pi via absolute path (NODE_PATH does not apply to ESM).
+import { spawn } from "node:child_process";
+import { existsSync } from "node:fs";
 import { createAgentSession } from "/usr/local/lib/node_modules/@earendil-works/pi-coding-agent/dist/index.js";
 
+const SETUP_PATH = "/workspace/.lvmh/setup.sh";
+const SETUP_TIMEOUT_MS = 10 * 60 * 1000;
+
+// Repo-level setup hook: if the repo ships .lvmh/setup.sh, run it before the
+// session starts (apt-get/go install/pip — anything the agent needs).
+// /workspace is a persistent per-repo volume, so the hook survives container
+// restarts and re-runs on every spawn. Failure is non-fatal: log and continue.
+async function runRepoSetup() {
+	if (!existsSync(SETUP_PATH)) return;
+	console.error(`[lvmh-bridge] running repo setup: ${SETUP_PATH}`);
+	const code = await new Promise((resolve) => {
+		const child = spawn("bash", [SETUP_PATH], {
+			cwd: "/workspace",
+			stdio: ["ignore", "inherit", "inherit"],
+		});
+		const timer = setTimeout(() => {
+			console.error(`[lvmh-bridge] setup timed out after ${SETUP_TIMEOUT_MS}ms, killing`);
+			child.kill("SIGKILL");
+			resolve(124);
+		}, SETUP_TIMEOUT_MS);
+		timer.unref?.();
+		child.on("error", (err) => {
+			clearTimeout(timer);
+			console.error("[lvmh-bridge] setup spawn error:", err);
+			resolve(1);
+		});
+		child.on("exit", (c) => {
+			clearTimeout(timer);
+			resolve(c ?? 1);
+		});
+	});
+	if (code === 0) console.error("[lvmh-bridge] setup completed");
+	else console.error(`[lvmh-bridge] setup exited ${code} — continuing anyway`);
+}
+
 process.on("unhandledRejection", (err) => {
 	console.error("[lvmh-bridge] unhandledRejection:", err);
 });
 
 try {
+	await runRepoSetup();
 	const { session } = await createAgentSession();
 	// SDK does not bind extensions implicitly (unlike TUI/RPC modes); without
 	// bindExtensions the session_start event never fires, so the lvmh plugin

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,