feat(cnn_v3): wire trained weights into CNNv3Effect + add timeline test sequence

- CNNv3Effect constructor loads ASSET_WEIGHTS_CNN_V3 via GetAsset on startup
- seq_compiler.py: CLASS_TO_HEADER supports full #include paths for cnn_v3/ classes
- timeline.seq: add cnn_v3_test sequence at 48s (GBufferEffect → CNNv3Effect)
- test_cnn_v3_parity: zero_weights test now explicitly uploads zeros to override asset

handoff(Gemini): CNNv3Effect ready; export weights to workspaces/main/weights/ and seek to 48s to test

1 files changed, 10 insertions, 3 deletions

diff --git a/tools/seq_compiler.py b/tools/seq_compiler.py
index dfd2ea4..fbd5c0d 100755
--- a/tools/seq_compiler.py
+++ b/tools/seq_compiler.py
@@ -391,14 +391,21 @@ def generate_cpp(seq: SequenceDecl, sorted_effects: List[EffectDecl],
     class_name += f'_{seq_index}_Sequence'
 
     # Generate includes
-    # Map class names that share a header file
+    # Map class names to header stems (default path: effects/<stem>_effect.h)
+    # Use a full #include string to override the path entirely.
     CLASS_TO_HEADER = {
-        'NtscYiq': 'ntsc',
+        'NtscYiq':       'ntsc',
+        'GBufferEffect': '#include "../../cnn_v3/src/gbuffer_effect.h"',
+        'CNNv3Effect':   '#include "../../cnn_v3/src/cnn_v3_effect.h"',
     }
     includes = set()
     for effect in seq.effects:
         if effect.class_name in CLASS_TO_HEADER:
-            header = CLASS_TO_HEADER[effect.class_name]
+            val = CLASS_TO_HEADER[effect.class_name]
+            if val.startswith('#include'):
+                includes.add(val)
+                continue
+            header = val
         else:
             # Convert ClassName to snake_case header
             header = re.sub('([A-Z])', r'_\1', effect.class_name).lower().lstrip('_')