chore(assets): drop cross-repo prose from cursor comments

Strip prose references to sibling Go implementations and external
ticket IDs from cursor.py, the cursor tests, the keyset integration
tests, asset_management's sort-field comment, and the legacy
prompt_id alias comment. Pure docstring/comment scrub — no behavior
or wire-format changes. x-runtime: [cloud] field annotations in
openapi.yaml are unchanged; those are the spec's structural
cross-runtime convention, not internal references.

app/assets/api/routes.py

@@ -173,7 +173,7 @@ def _build_asset_response(result: schemas.AssetDetailResult | schemas.UploadResu
         user_metadata=result.ref.user_metadata or {},
         metadata=result.ref.system_metadata,
         job_id=result.ref.job_id,
-        prompt_id=result.ref.job_id,  # deprecated: mirrors job_id for cloud compat
+        prompt_id=result.ref.job_id,  # deprecated alias of job_id, kept for compatibility
         created_at=result.ref.created_at,
         updated_at=result.ref.updated_at,
         last_access_time=result.ref.last_access_time,

app/assets/services/asset_management.py

@@ -253,9 +253,8 @@ def get_asset_by_hash(asset_hash: str) -> AssetData | None:
         return extract_asset_data(asset)
 
 
-# Sort fields that support cursor pagination. Mirrors cloud's allowlist
-# (created_at, updated_at, name, size). `last_access_time` is OSS-only and
-# falls back to offset/limit — no cloud contract to match.
+# Sort fields that support cursor pagination. `last_access_time` is not
+# in this list — it falls back to offset/limit.
 _CURSOR_SORT_FIELDS = ("created_at", "updated_at", "name", "size")
 
 

app/assets/services/cursor.py

@@ -1,8 +1,6 @@
 """Opaque keyset-pagination cursor for /api/assets.
 
-Wire format aligns with the cloud Go implementation in
-`common/pagination/cursor.go` so the frontend sees one contract across
-runtimes. Payload JSON uses short keys to keep the encoded length small:
+Payload JSON uses short keys to keep the encoded length small:
 
     {"s": <sort_field>, "v": <value>, "id": <id>, "o": <order>}
 
@@ -10,14 +8,12 @@ The `o` key binds the cursor to the sort direction it was minted under,
 so replaying a `desc` cursor against an `asc` request fails with
 ``INVALID_CURSOR`` rather than silently walking the wrong direction.
 `o` is mandatory on every payload — a cursor without it is rejected as
-malformed. Cloud will land the same field in its mirror PR; until then,
-Python and cloud cursors differ by exactly the `o` key, and a cloud-
-minted cursor cannot be decoded by this endpoint.
+malformed.
 
 Encoding is base64url with no padding. JSON serialization escapes `<`,
 `>`, `&`, U+2028, and U+2029 to match Go's default `json.Marshal`
 behavior so asset names containing those characters produce
-byte-identical cursors across runtimes.
+byte-identical cursors across compatible Go implementations.
 
 Time values are serialized as Unix microseconds (UTC) — microsecond
 precision matches PostgreSQL's `timestamp` type, so a cursor minted from
@@ -44,12 +40,9 @@ class InvalidCursorError(ValueError):
 # decode path from oversized allocations and downstream SQL predicates from
 # unbounded strings.
 #
-# MAX_CURSOR_VALUE_LENGTH is 512 (vs cloud's 256) to fit OSS's
-# `AssetReference.name` column max (String(512)) — otherwise a long-named
-# asset would mint a cursor the same server then refuses on the next request.
-# Cloud's data model has shorter names so its lower cap is fine there;
-# cross-runtime byte-identity is unaffected because no real cloud cursor ever
-# carries a value > 256.
+# MAX_CURSOR_VALUE_LENGTH is 512 to fit the `AssetReference.name` column max
+# (`String(512)`) — otherwise a long-named asset would mint a cursor the same
+# server then refuses on the next request.
 MAX_ENCODED_CURSOR_LENGTH = 1024
 MAX_CURSOR_VALUE_LENGTH = 512
 MAX_CURSOR_ID_LENGTH = 128
@@ -63,8 +56,6 @@ class CursorPayload:
     order: str
 
 
-# Order direction tokens. Mirrored on the cloud follow-up so cursors carrying
-# `o` are interchangeable between runtimes once both sides ship the field.
 _VALID_ORDERS = ("asc", "desc")
 
 

tests-unit/assets_test/services/test_cursor.py

@@ -1,10 +1,9 @@
 """Tests for app.assets.services.cursor.
 
-The wire format must stay byte-identical with the cloud Go implementation
-(common/pagination/cursor.go in Comfy-Org/cloud) so the frontend sees one
-contract across runtimes. The byte-identity fixture below mirrors the Go
-test cases — any drift here means cloud and OSS minted different cursors
-for the same triple, which would break FE pagination across backends.
+The byte-identity fixtures below pin the wire format so a parallel Go
+implementation can mint exchange-compatible cursors for the same triple
+(asset name, value, id). Drift here would break frontend pagination
+against any compatible backend.
 """
 from __future__ import annotations
 
@@ -187,9 +186,9 @@ class TestEncoderDecoderSymmetry:
     """
 
     def test_long_name_within_cap_round_trips(self):
-        """OSS assets allow names up to 512 chars (`String(512)`); cursor must
-        handle that. Cloud's lower cap is acceptable on its side because the
-        cloud schema doesn't permit names that long."""
+        """Assets allow names up to 512 chars (`String(512)`); the cursor
+        encoder must round-trip a value at that cap so a freshly minted
+        cursor never fails decode on the next request."""
         long_name = "n" * MAX_CURSOR_VALUE_LENGTH
         encoded = encode_cursor("name", long_name, "asset-x")
         payload = decode_cursor(encoded, ALLOWED)
@@ -269,10 +268,10 @@ class TestGoCompatJsonEscaping:
 class TestByteIdentityFixtures:
     """Pin the wire format so it doesn't drift silently.
 
-    NOTE — these fixtures will need updates on the cloud side once cloud
-    mirrors the `o` (order binding) field. Until then, Python cursors and
-    cloud cursors differ by exactly that key. The structural format (`s`,
-    `v`, `id` plus base64url + Go-compat escaping) remains aligned.
+    These fixtures hold the exact base64url-encoded bytes a given payload
+    produces. Any change to the encoding (key order, escaping, ordering of
+    structural fields) will fail these tests loudly rather than diverge
+    silently from external consumers.
     """
 
     @pytest.mark.parametrize(

tests-unit/assets_test/test_list_cursor.py

@@ -1,8 +1,8 @@
 """Integration tests for cursor-based pagination on GET /api/assets.
 
-Wire contract is shared with cloud's Go implementation (BE-893). These tests
-exercise the handler/service/query path end-to-end; cursor-encoding-level
-tests live in tests-unit/assets_test/services/test_cursor.py.
+These tests exercise the handler/service/query path end-to-end;
+cursor-encoding-level tests live in
+tests-unit/assets_test/services/test_cursor.py.
 """
 import time