Make sure the clojure process can communicate over stdio

Some use case requires to talk with the process via stdio (clojure
mcp). Currently the process we start via ProcessBuild does not expose
that. This patch solves that by calling `.inheritIO` (Java & and later)
on it.

Author: arichiardi

CHANGELOG.md

@@ -17,6 +17,8 @@
 
 ## Changed
 
+- Make sure the clojure process can communicate over `stdio`.
+
 # 0.42.182-alpha (2025-03-01 / 50cc172)
 
 ## Fixed

src/lambdaisland/launchpad.clj

@@ -514,13 +514,14 @@
    ((run-process opts) ctx))
   ([{:keys [cmd prefix working-dir
             background? timeout-ms check-exit-code? env
-            color show-command?]
+            show-command?]
      :or {working-dir "."
           check-exit-code? true
           show-command? true}}]
    (fn [ctx]
      (let [working-dir  (io/file working-dir)
            proc-builder (doto (ProcessBuilder. (map str cmd))
+                          (.inheritIO)
                           (.directory working-dir))
            _ (.putAll (.environment proc-builder) (or env (:env ctx)))
            color (mod (hash (or prefix (first cmd))) 8)
@@ -539,9 +540,8 @@
                       (.waitFor process timeout-ms TimeUnit/MILLISECONDS)
                       (.waitFor process))]
            (when (and check-exit-code? (not= 0 exit))
-             (do
-               (println (str prefix) "Exited with non-zero exit code: " exit)
-               (System/exit exit)))
+             (println prefix "Exited with non-zero exit code: " exit)
+             (System/exit exit))
            ctx))))))
 
 (defn start-clojure-process [{:keys [aliases nrepl-port] :as ctx}]