fix(adapters): avoid single-quoted docker daemon probe over SSH exec

packages/adapters/src/system/catalog.test.ts

@@ -71,6 +71,27 @@ describe("openresty install plan — #86 codename handling", () => {
  * candidate and aborts the whole setup on ARM64. Arch is decided at RUNTIME
  * (shell), so both the direct apt branch and the runtime-probe branch carry it.
  */
+/**
+ * Regression guard for GitHub #408: the Docker daemon probe must not embed
+ * single-quoted Go templates. sshd often runs non-interactive exec commands
+ * through `sh -c '…'`, so inner `'{{.ServerVersion}}'` terminates the outer
+ * quote, docker exits non-zero, and the Components tab reports "daemon not
+ * running" even though `docker info` works from the interactive Terminal tab.
+ */
+describe("docker health check — #408 ssh exec quoting", () => {
+  it("uses a daemon probe without single-quoted Go templates", () => {
+    const cmd = systemCatalog.checks.docker.daemonCommand!;
+    expect(cmd).not.toMatch(/'[^']*\{\{/);
+    expect(cmd).not.toContain("{{.ServerVersion}}");
+  });
+
+  it("still verifies the daemon via docker info exit status", () => {
+    expect(systemCatalog.checks.docker.daemonCommand).toBe(
+      "docker info >/dev/null 2>&1 && echo ok",
+    );
+  });
+});
+
 describe("openresty install plan — #109 arm64 apt repo", () => {
   for (const [name, profile] of [
     ["apt/ubuntu", linux({ packageManager: "apt", distro: "ubuntu" })],

packages/adapters/src/system/catalog.ts

@@ -222,7 +222,9 @@ export const systemCatalog = {
   checks: {
     docker: {
       versionCommand: "docker --version",
-      daemonCommand: "docker info --format '{{.ServerVersion}}'",
+      // Avoid single-quoted Go templates — they break when sshd runs the command
+      // through a login shell that wraps the whole string in single quotes (#408).
+      daemonCommand: "docker info >/dev/null 2>&1 && echo ok",
       parseVersion: (output: string) =>
         output.match(/Docker version ([^\s,]+)/)?.[1] ?? output,
       missingMessage: "Docker is not installed",