Add generic streaming interpreter with configurable sources/audio

- Add stream_sexp_generic.py: fully generic sexp interpreter
- Add streaming primitives for video sources and audio analysis
- Add config system for external sources and audio files
- Add templates for reusable scans and macros
- Fix video/audio stream mapping in file output
- Add dynamic source cycling based on sources array length
- Remove old Python effect files (migrated to sexp)
- Update sexp effects to use namespaced primitives

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

sexp_effects/effects/wave.sexp

@@ -1,4 +1,5 @@
 ;; Wave effect - sine wave displacement distortion
+(require-primitives "geometry" "image")
 
 (define-effect wave
   :params (
@@ -7,8 +8,8 @@
     (speed :type int :default 1 :range [0 10])
     (direction :type string :default "horizontal")
   )
-  (let* ((w (width frame))
-         (h (height frame))
+  (let* ((w (image:width frame))
+         (h (image:height frame))
          ;; Use _time for animation phase
          (phase (* (or _time 0) speed 2 pi))
          ;; Calculate frequency: waves per dimension
@@ -17,5 +18,5 @@
                  ((= direction "horizontal") "x")
                  ((= direction "vertical") "y")
                  (else "both")))
-         (coords (wave-displace w h axis freq amplitude phase)))
-    (remap frame (coords-x coords) (coords-y coords))))
+         (coords (geometry:wave-coords w h axis freq amplitude phase)))
+    (geometry:remap frame (geometry:coords-x coords) (geometry:coords-y coords))))