feat: Add --seek command line option for fast-forward debugging

This feature allows developers to jump to a specific time in the demo sequence (e.g., './demo64k --seek 10.5'). It simulates the game logic, audio state (rendering silent buffers), and visual physics (compute shaders) from t=0 up to the target time before starting real-time playback. Audio initialization is refactored to separate device init and start.

1 files changed, 1 insertions, 0 deletions

diff --git a/tools/spectool.cc b/tools/spectool.cc
index d9b58be..663056d 100644
--- a/tools/spectool.cc
+++ b/tools/spectool.cc
@@ -133,6 +133,7 @@ int play_spec(const char *in_path) {
 
   platform_init_window(false);
   audio_init();
+  audio_start();
   Spectrogram spec;
   spec.spectral_data_a = spec_data.data();
   spec.spectral_data_b =