* fix(daemon): use CREATE_NEW_CONSOLE to stop grandchild console popups on Windows (#1521)
CREATE_NO_WINDOW strips the console entirely. When the agent CLI then
spawns a console-subsystem grandchild (bash, cmd, netstat, findstr,
timeout) without itself passing CREATE_NO_WINDOW, Windows allocates a
brand-new visible console window per invocation — trading one popup per
agent run for N popups per tool call.
Switch to CREATE_NEW_CONSOLE + HideWindow=true so the agent gets a
hidden console that grandchildren inherit. Stdio pipes still work via
STARTF_USESTDHANDLES; no changes needed at the 17 hideAgentWindow call
sites.
Add a Windows-only regression test asserting CREATE_NEW_CONSOLE is set
and CREATE_NO_WINDOW is not, per the #1474 Windows-test follow-up.
Root-cause diagnosis by @matrenitski (verified against the shipped
multica.exe and the Claude Code CLI it spawns) in issue #1521.
* test(agent): use CREATE_NEW_CONSOLE-compatible flag in preservation test
CREATE_NEW_PROCESS_GROUP is silently ignored by Windows when combined
with CREATE_NEW_CONSOLE, so asserting it 'survives' was only bitwise-true,
not semantically meaningful. Switch the example to
CREATE_UNICODE_ENVIRONMENT (documented compatible) and also assert a
non-flag field (NoInheritHandles) survives to exercise full struct
preservation.
