pgw#602: drop dispatch-binding manifest parsing (th#928 companion)

src/gen_worker/models/download.py

@@ -45,8 +45,7 @@
 #
 # ONE keying function (gw#492) normalizes both index keys and lookups —
 # replacing the old raw/stripped/tag-removed fallback chain and its
-# `_binding_canonical_ref` twin. Keys are flavor-granular (a dispatch table
-# may bind two providers to one repo name via different flavors) with a
+# `_binding_canonical_ref` twin. Keys are flavor-granular, with a
 # repo-identity fallback so hub-minted picks of NEW flavors (`#svdq-int4`)
 # still route to their repo's provider.
 # ---------------------------------------------------------------------------
@@ -117,11 +116,6 @@ def _collect_binding_entries(bindings: Any) -> list[dict[str, Any]]:
     for entry in bindings.values():
         if not isinstance(entry, dict):
             continue
-        if str(entry.get("kind") or "").strip() == "dispatch":
-            table = entry.get("table")
-            if isinstance(table, dict):
-                out.extend(sub for sub in table.values() if isinstance(sub, dict))
-            continue
         if entry.get("ref"):
             out.append(entry)
     return out

tests/test_provider_routing.py

@@ -74,12 +74,11 @@ def _manifest(*binding_blocks: dict) -> dict:
             {"acme/flux:canary#fp8": "tensorhub"},
         ),
         (
-            # Dispatch table: one repo name, two providers per flavor variant.
+            # th#928: retired dispatch-kind entries are ignored, not parsed.
             {"pipeline": {"kind": "dispatch", "field": "variant", "table": {
                 "bf16": {"provider": "hf", "ref": "owner/flux", "flavor": "bf16"},
-                "fp8": {"provider": "tensorhub", "ref": "owner/flux", "flavor": "fp8"},
             }}},
-            {"owner/flux#bf16": "hf", "owner/flux#fp8": "tensorhub"},
+            {"owner/flux#bf16": None},
         ),
     ],
 )