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>

recipes/woods-recipe-optimized.sexp

@@ -125,6 +125,8 @@
           dir (get cfg :dir)
           rot-max-a (get cfg :rot-a)
           rot-max-b (get cfg :rot-b)
+          zoom-a (get cfg :zoom-a)
+          zoom-b (get cfg :zoom-b)
           pair-angle (get pstate :angle)
           inv-a-on (> (get pstate :inv-a) 0)
           inv-b-on (> (get pstate :inv-b) 0)
@@ -140,10 +142,12 @@
 
           ;; Define effect pipelines for each source
           ;; These get compiled to single CUDA kernels!
-          effects-a [{:op "rotate" :angle angle-a}
+          effects-a [{:op "zoom" :amount zoom-a}
+                     {:op "rotate" :angle angle-a}
                      {:op "hue_shift" :degrees (if hue-a-on hue-a-val 0)}
                      {:op "invert" :amount (if inv-a-on 1 0)}]
-          effects-b [{:op "rotate" :angle angle-b}
+          effects-b [{:op "zoom" :amount zoom-b}
+                     {:op "rotate" :angle angle-b}
                      {:op "hue_shift" :degrees (if hue-b-on hue-b-val 0)}
                      {:op "invert" :amount (if inv-b-on 1 0)}]