chore(sync): mirror backend .py + Dockerfile to Space (hf-sync-backend)

Automated backend sync from szl-holdings/a11oy main via hf-sync-backend.
Updated (differed from the Space): szl3d_holographic.py
Deleted (gone from the repo + Dockerfile COPY set): (none)

Keeps the Space-built backend (serve.py + the Dockerfile-COPY'd .py
modules) identical to GitHub main so the Space never rebuilds from a
stale backend, new endpoints don't 404 there, and orphaned modules
removed from the repo don't linger in the Space tree.

szl3d_holographic.py

@@ -93,6 +93,7 @@ SURFACES: List[Dict[str, str]] = [
     {"id": "dla", "title": "Dynamic Linear Attention", "owner": "Wave15"},
     {"id": "ctxready", "title": "Context-Ready Transformer", "owner": "Wave15"},
     {"id": "opera", "title": "OPERA Perplexity-Reward Alignment", "owner": "Wave15"},
+    {"id": "brain", "title": "Formula-Graph Brain", "owner": "Wave15"},
 ]
 
 # Content-type by extension (the only extensions we serve from the 3d tree).