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): szl_provenance.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.

szl_provenance.py

@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
-# © 2026 Lutar, Stephen P. — SZL Holdings · ORCID 0009-0001-0110-4173 · Doctrine v11/v12
+# © 2026 Lutar, Stephen P. — SZL Holdings · ORCID 0009-0001-0110-4173 · Doctrine v11
 # Authored by Yachay (CTO) — Provenance Hardening layer.
 """
 szl_provenance — ADDITIVE mesh provenance layer for every SZL Space.
@@ -55,7 +55,7 @@ from fastapi.responses import JSONResponse
 
 import szl_dsse
 
-DOCTRINE = "v12"
+DOCTRINE = "v11"
 SLSA_LEVEL = "L1"
 
 # ---------------------------------------------------------------------------