0.6.5 Hotfix — Null Hørizøn Steam update #154679

This should tidy up some of the glitches that came with 0.6.5 Please restart Steam or Verify files to trigger the update UI Sound Fixes: Patched the global mouseover and click event listeners to use the global volume variable. Added "Hard Mute" logic to ensure complete silence when the slider is at 0. Variable Consistency: Standardized all audio functions to use the camelCase variable currentSfxVol instead of the undefined currentSFXVol. Weapon Audio Mixing: Updated playWeaponSound to use the correct variable (currentSfxVol), apply a safety "Hard Mute" when volume is near zero, and mix weapon sounds at 80% volume to prevent them from overpowering other audio. Infinite Stock Bug: Fixed a critical bug where buying the last item in a stack would delete the key, causing the game to misinterpret "undefined" as "Infinite Stock." The logic now forces stock to 0 instead of deleting the entry. Se...