zen history command (#987)

- Feature: Per-user invocation history for `zen` and `zenserver`; each startup appends a record to a JSONL file capped at the most recent 100 entries. Location: `%LOCALAPPDATA%\Epic\Zen\History\invocations.jsonl` on Windows, `~/.zen/History/invocations.jsonl` on POSIX
  - `zen history` opens an interactive picker; selecting a zen row re-runs it inline and forwards the exit code, selecting a zenserver row spawns it detached
  - `zen history --list` (`-l`) prints the table to stdout instead of showing the picker
  - `zen history --filter zen|zenserver` restricts the listing to one executable
  - `zen history --print` prints the reconstructed command line of the selected row instead of launching it
  - `--enable-execution-history` global option on both binaries (default `true`) to opt out per invocation
  - The history file is attached to Sentry crash reports (alongside the existing zenserver log)

1 files changed, 22 insertions, 5 deletions

diff --git a/src/zenutil/zenserverprocess.cpp b/src/zenutil/zenserverprocess.cpp
index e1ffeeb3e..2d4334ffa 100644
--- a/src/zenutil/zenserverprocess.cpp
+++ b/src/zenutil/zenserverprocess.cpp
@@ -1113,8 +1113,23 @@ ZenServerInstance::SpawnServerInternal(int ChildId, std::string_view ServerArgs,
 	ChildEventName << "Zen_Child_" << ChildId;
 	NamedEvent ChildEvent{ChildEventName};
 
+	const std::filesystem::path BaseDir = m_Env.ProgramBaseDir();
+	const std::filesystem::path Executable =
+		m_ServerExecutablePath.empty() ? (BaseDir / "zenserver" ZEN_EXE_SUFFIX_LITERAL) : m_ServerExecutablePath;
+
 	ExtendableStringBuilder<512> CommandLine;
-	CommandLine << "zenserver" ZEN_EXE_SUFFIX_LITERAL;	// see CreateProc() call for actual binary path
+	{
+		const std::string  ExeUtf8	  = PathToUtf8(Executable);
+		constexpr AsciiSet QuoteChars = " \t\"";
+		if (AsciiSet::HasAny(ExeUtf8.c_str(), QuoteChars))
+		{
+			CommandLine << '"' << ExeUtf8 << '"';
+		}
+		else
+		{
+			CommandLine << ExeUtf8;
+		}
+	}
 
 	if (m_ServerMode == ServerMode::kHubServer)
 	{
@@ -1127,6 +1142,11 @@ ZenServerInstance::SpawnServerInternal(int ChildId, std::string_view ServerArgs,
 
 	CommandLine << " --child-id " << ChildEventName;
 
+	if (!m_EnableExecutionHistory)
+	{
+		CommandLine << " --enable-execution-history=false";
+	}
+
 	if (!ServerArgs.empty())
 	{
 		CommandLine << " " << ServerArgs;
@@ -1141,10 +1161,6 @@ ZenServerInstance::SpawnServerInternal(int ChildId, std::string_view ServerArgs,
 	{
 		CreationFlags |= CreateProcOptions::Flag_NewConsole;
 	}
-
-	const std::filesystem::path BaseDir = m_Env.ProgramBaseDir();
-	const std::filesystem::path Executable =
-		m_ServerExecutablePath.empty() ? (BaseDir / "zenserver" ZEN_EXE_SUFFIX_LITERAL) : m_ServerExecutablePath;
 	const std::filesystem::path OutputPath	  = (OpenConsole || m_Env.IsPassthroughOutput())
 													? std::filesystem::path{}
 													: std::filesystem::temp_directory_path() / ("zenserver_" + m_Name + ".log");
@@ -1647,6 +1663,7 @@ StartupZenServer(LoggerRef LogRef, const StartupZenServerOptions& Options)
 	ZenServerEnvironment ServerEnvironment;
 	ServerEnvironment.Initialize(ProgramBaseDir);
 	ZenServerInstance Server(ServerEnvironment, Options.Mode);
+	Server.SetEnableExecutionHistory(Options.EnableExecutionHistory);
 
 	std::string ServerArguments(Options.ExtraArgs);
 	if ((Options.Port != 0) && (ServerArguments.find("--port") == std::string::npos))