Fix lazy audio path resolution for GPU streaming

Audio playback path was being resolved during parsing when database
may not be ready, causing fallback to non-existent path. Now resolves
lazily when stream starts, matching how audio analyzer works.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

configs/audio-halleluwah.sexp

@@ -10,8 +10,8 @@
 (require-primitives "streaming")
 
 ;; Audio analyzer (provides beat detection and energy levels)
-;; Paths relative to working directory (project root)
-(def music (streaming:make-audio-analyzer "woods_half/halleluwah.webm"))
+;; Using friendly name for asset resolution
+(def music (streaming:make-audio-analyzer "woods-audio"))
 
 ;; Audio playback path (for sync with video output)
-(audio-playback "woods_half/halleluwah.webm")
+(audio-playback "woods-audio")