Fix bun run dev:desktop from not terminating properly on SIGINT/SIGTERM/SIGHUP (#305)

* fix: handle turbo shutdown in dev runner

* refactor: rely on effect child process shutdown

* refactor: inline turbo shutdown timeout

* add back sigint sigterm sighup handling

* refactor: tighten turbo signal forwarding

* refactor: inline dev runner errors

* fix: use detached false instead of manual signal forwarding

Effect defaults to detached: true on non-Windows, putting turbo in a
new process group where terminal signals (Ctrl+C) never reach it.
Setting detached: false keeps turbo in the same group, eliminating
the need for ~130 lines of manual signal forwarding.

* Update scripts/dev-runner.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: hwanseoc

scripts/dev-runner.ts

@@ -455,6 +455,11 @@ export function runDevRunnerWithInput(input: DevRunnerCliInput) {
         stderr: "inherit",
         env,
         extendEnv: false,
+        // Keep turbo in the same process group so terminal signals (Ctrl+C)
+        // reach it directly. Effect defaults to detached: true on non-Windows,
+        // which would put turbo in a new group and require manual forwarding.
+        detached: false,
+        forceKillAfter: "1500 millis",
       },
     );