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>

streaming/recipe_adapter.py

@@ -412,3 +412,59 @@ def run_recipe(
     """
     adapter = RecipeAdapter(recipe_path, params=params)
     adapter.run(output=output, duration=duration, fps=fps)
+
+
+def run_recipe_piped(
+    recipe_path: str,
+    duration: float = None,
+    params: Dict = None,
+    fps: float = None,
+):
+    """
+    Run recipe and pipe directly to mpv.
+    """
+    from .output import PipeOutput
+
+    adapter = RecipeAdapter(recipe_path, params=params)
+    compositor = adapter.build_compositor(analysis_data={}, fps=fps)
+
+    # Get frame size
+    if compositor.sources:
+        first_source = compositor.sources[0]
+        w, h = first_source._size
+    else:
+        w, h = 720, 720
+
+    actual_fps = fps or adapter.compiled.encoding.get('fps', 30)
+
+    # Create pipe output
+    pipe_out = PipeOutput(
+        size=(w, h),
+        fps=actual_fps,
+        audio_source=compositor._audio_source
+    )
+
+    # Create executor
+    from .sexp_executor import SexpStreamingExecutor
+    executor = SexpStreamingExecutor(adapter.compiled, seed=42)
+
+    # Run with pipe output
+    compositor.run(output=pipe_out, duration=duration, recipe_executor=executor)
+
+
+if __name__ == "__main__":
+    import argparse
+    parser = argparse.ArgumentParser(description="Run sexp recipe with streaming compositor")
+    parser.add_argument("recipe", help="Path to .sexp recipe file")
+    parser.add_argument("-o", "--output", default="pipe",
+                       help="Output: 'pipe' (mpv), 'preview', or filename (default: pipe)")
+    parser.add_argument("-d", "--duration", type=float, default=None,
+                       help="Duration in seconds (default: audio duration)")
+    parser.add_argument("--fps", type=float, default=None,
+                       help="Frame rate (default: from recipe)")
+    args = parser.parse_args()
+
+    if args.output == "pipe":
+        run_recipe_piped(args.recipe, duration=args.duration, fps=args.fps)
+    else:
+        run_recipe(args.recipe, output=args.output, duration=args.duration, fps=args.fps)