optional process to exec. Spawn without wait, not sure how legit

src/main.zig

@@ -9,6 +9,7 @@ var should_exit = std.atomic.Value(bool).init(false);
 
 /// Demo implementation of speech event handler with comprehensive error handling
 const SpeechHandler = struct {
+    allocator: std.mem.Allocator,
     speech_count: u32 = 0,
     error_count: u32 = 0,
     warning_count: u32 = 0,
@@ -24,13 +25,19 @@ const SpeechHandler = struct {
 
         // Print with timestamp for better experience
         const timestamp = std.time.timestamp();
-        std.debug.print("[{}] Speech #{}: {s}\n", .{ timestamp, self.speech_count, text });
+        std.log.debug("[{}] Speech {}->{?s}: {s}", .{
+            timestamp,
+            self.speech_count,
+            self.exec_program,
+            text,
+        });
 
         // Execute program if specified
         if (self.exec_program) |program| {
-            var child = std.process.Child.init(&[_][]const u8{ program, text }, std.heap.page_allocator);
+            var child = std.process.Child.init(&[_][]const u8{ program, text }, self.allocator);
-            _ = child.spawn() catch |err| {
+            child.spawn() catch |err| {
                 std.log.err("Failed to execute program '{s}': {}", .{ program, err });
+                return;
             };
         }
     }
@@ -179,7 +186,10 @@ pub fn main() !void {
     }
 
     // Create handler with statistics tracking
-    var handler = SpeechHandler{ .exec_program = exec_program };
+    var handler = SpeechHandler{
+        .allocator = allocator,
+        .exec_program = exec_program,
+    };
     const speech_handler = stt.SpeechEventHandler{
         .onSpeechFn = SpeechHandler.onSpeech,
         .onErrorFn = SpeechHandler.onError,
@@ -244,6 +254,7 @@ pub fn main() !void {
         _ = stdout.writeAll("\n") catch {};
     }
 
+    std.log.info("Program to execute on speech detection: {?s}", .{exec_program});
     std.log.info("STT library initialized successfully with configuration:", .{});
     std.log.info("  Model path: {s}", .{options.model_path});
     std.log.info("  Audio device: {s}", .{options.audio_device});
@@ -316,7 +327,7 @@ pub fn main() !void {
 test "handler functionality" {
     const testing = std.testing;
 
-    var handler = SpeechHandler{};
+    var handler = SpeechHandler{ .allocator = std.testing.allocator };
     const speech_handler = stt.SpeechEventHandler{
         .onSpeechFn = SpeechHandler.onSpeech,
         .onErrorFn = SpeechHandler.onError,