lazurio recover asks the Launchpad probe it judges (#74)

src/recover/observe.ts

@@ -168,7 +168,12 @@ export async function observeSelfCheck(
         "--json",
         "--base",
         input.base,
-        ...(input.folder === undefined ? [] : ["--folder", input.folder]),
+        // With a Folder the judge (`requireSelfCheck`) expects the Launchpad
+        // probe in the answer, so the observation asks the same question:
+        // read-only, on a private socket (docs/update.md "Activation").
+        ...(input.folder === undefined
+          ? []
+          : ["--folder", input.folder, "--launchpad"]),
       ],
       input.timeoutMs ?? defaultSelfCheckTimeoutMs,
     );

tests/fixtures/update-world.ts

@@ -59,11 +59,17 @@ export function executable(
       : { templateRevision: options.templateRevision }),
     base: { active: null, highWater: null },
     folder: { preferences: 1, manifest: 1 },
+  });
+  // As the product does: the probe answers only when it was asked for
+  // (`--launchpad`); a caller that judges the answer must ask the question
+  // (LazurioPlatform issue #74).
+  const withProbe = JSON.stringify({
+    ...JSON.parse(report),
     launchpad: { probe: "ok" },
   });
   const probe =
     options.launchpadRefused === undefined
-      ? ""
+      ? `case " $* " in *" --launchpad "*) echo '${withProbe}'; exit 0;; esac\n`
       : `case " $* " in *" --launchpad "*) echo '${JSON.stringify({ launchpadRefused: options.launchpadRefused })}'; exit 1;; esac\n`;
   return new TextEncoder().encode(
     `#!/bin/sh\n${options.healthy === false ? "exit 1\n" : ""}${probe}echo '${report}'\n`,

tests/install-script.test.ts

@@ -273,6 +273,7 @@ test.skipIf(!supported)(
     }
     for (const line of requests) expect(line).toContain("--proto =https");
   },
+  30_000,
 );
 
 test.skipIf(!supported)(