test(e2e): name the pinned GitHub issue in each passthrough test docstring

The passthrough tests and their coverage registry rows pointed at the internal
ticket id, which does not resolve for anyone following a link from
status.litellm.ai. Each test docstring and registry rationale now names the
GitHub issue it pins: #36086 for the two prefix routing cases, #36087 for the
file list cursors, #36523 for streamed Responses cost, and #36646 for
embeddings spend.

tests/e2e/batches/test_batches_e2e.py

@@ -579,7 +579,8 @@ class TestOpenAIFiles:
     def test_list_page_cursors_address_only_the_callers_own_files(
         self, client: BatchClient, resources: ResourceManager
     ) -> None:
-        """A list page's pagination cursors must address rows in that page.
+        """Pins GitHub issue #36087: a list page's pagination cursors must address
+        rows in that page.
 
         The proxy fronts one shared provider account, so the upstream page is the
         whole organization's. The gateway narrows `data` to the files the caller

tests/e2e/coverage_registry/llm_conversational.yaml

@@ -63,7 +63,7 @@
 - {id: llm.responses.openai.input_validation.nonstream.works, module: llm, tier: P1, subject_endpoint: responses, route: openai, capability: input_validation, streaming: nonstream, assertions: [works], source: "vendor strategy §9.9 / LIT-4778", rationale: "Responses missing/empty input and missing model are rejected"}
 - {id: llm.responses.openai.basic.stream.works, module: llm, tier: P0, subject_endpoint: responses, route: openai, capability: basic, streaming: stream, assertions: [works], source: "response_api_endpoints/endpoints.py:26", rationale: "Streaming via /v1/responses"}
 - {id: llm.responses.openai.basic.nonstream.cost_logged, module: llm, tier: P0, subject_endpoint: responses, route: openai, capability: basic, streaming: nonstream, assertions: [works, cost_logged], source: "response_api_endpoints/endpoints.py:26", rationale: "Cost logged on responses"}
-- {id: llm.responses.openai.passthrough.stream.cost_logged, module: llm, tier: P0, subject_endpoint: responses, route: openai, capability: basic, streaming: stream, assertions: [cost_logged], source: "test_passthrough_e2e.py", rationale: "A streamed POST /openai_passthrough/v1/responses is costed and keyed by the provider response id; it used to log a zero-cost row under a random id (LIT-5870)"}
+- {id: llm.responses.openai.passthrough.stream.cost_logged, module: llm, tier: P0, subject_endpoint: responses, route: openai, capability: basic, streaming: stream, assertions: [cost_logged], source: "test_passthrough_e2e.py", rationale: "A streamed POST /openai_passthrough/v1/responses is costed and keyed by the provider response id; it used to log a zero-cost row under a random id (GitHub issue #36523)"}
 - {id: llm.responses.openai.tool_use.nonstream.works, module: llm, tier: P0, subject_endpoint: responses, route: openai, capability: tool_use, streaming: nonstream, assertions: [works], source: "model_prices json", rationale: "Tool calls via Responses API"}
 - {id: llm.responses.openai.vision.nonstream.works, module: llm, tier: P0, subject_endpoint: responses, route: openai, capability: vision, streaming: nonstream, assertions: [works], source: "model_prices json", rationale: "Vision via Responses API"}
 - {id: llm.responses.anthropic.basic.nonstream.works, module: llm, tier: P1, subject_endpoint: responses, route: anthropic, capability: basic, streaming: nonstream, assertions: [works], source: "response_api_endpoints/endpoints.py:26", rationale: "Responses w/ Anthropic translation (smoke)"}

tests/e2e/coverage_registry/llm_nonconversational.yaml

@@ -3,7 +3,7 @@
 - {id: llm.embeddings.openai.basic.nonstream.works, module: llm, tier: P0, subject_endpoint: embeddings, route: openai, capability: basic, streaming: nonstream, assertions: [works], source: "test_embeddings_endpoint_e2e.py:23", rationale: "Core endpoint, live vector response"}
 - {id: llm.embeddings.openai.input_validation.nonstream.works, module: llm, tier: P1, subject_endpoint: embeddings, route: openai, capability: input_validation, streaming: nonstream, assertions: [works], source: "vendor strategy §9.3 / LIT-4778", rationale: "Missing model/input on /embeddings return client errors"}
 - {id: llm.embeddings.openai.basic.nonstream.cost_logged, module: llm, tier: P0, subject_endpoint: embeddings, route: openai, capability: basic, streaming: nonstream, assertions: [cost_logged], source: "SPEND_TRACKING_COVERAGE_MATRIX.md:34", rationale: "Cost tracking on embeddings"}
-- {id: llm.embeddings.openai.passthrough.nonstream.cost_logged, module: llm, tier: P0, subject_endpoint: embeddings, route: openai, capability: basic, streaming: nonstream, assertions: [cost_logged], source: "test_passthrough_e2e.py", rationale: "POST /openai_passthrough/v1/embeddings is costed; the route wrote no spend row at all, so budgets never saw traffic OpenAI was billing for (LIT-5870)"}
+- {id: llm.embeddings.openai.passthrough.nonstream.cost_logged, module: llm, tier: P0, subject_endpoint: embeddings, route: openai, capability: basic, streaming: nonstream, assertions: [cost_logged], source: "test_passthrough_e2e.py", rationale: "POST /openai_passthrough/v1/embeddings is costed; the route wrote no spend row at all, so budgets never saw traffic OpenAI was billing for (GitHub issue #36646)"}
 - {id: llm.embeddings.azure_openai.basic.nonstream.works, module: llm, tier: P0, subject_endpoint: embeddings, route: azure_openai, capability: basic, streaming: nonstream, assertions: [works], source: "llms/azure/azure.py", rationale: "Azure embeddings via translation"}
 - {id: llm.embeddings.bedrock.basic.nonstream.works, module: llm, tier: P1, subject_endpoint: embeddings, route: bedrock_converse, capability: basic, streaming: nonstream, assertions: [works], source: "llms/bedrock/embed/embedding.py", rationale: "Bedrock Titan embeddings"}
 - {id: llm.embeddings.vertex.basic.nonstream.works, module: llm, tier: P1, subject_endpoint: embeddings, route: vertex, capability: basic, streaming: nonstream, assertions: [works], source: "vertex_embeddings/embedding_handler.py", rationale: "Vertex embeddings"}
@@ -14,7 +14,7 @@
 - {id: llm.batches.openai.cancel.nonstream.works, module: llm, tier: P0, subject_endpoint: batches, route: openai, capability: basic, streaming: nonstream, assertions: [works], source: "test_batches_e2e.py", rationale: "Batch cancel"}
 - {id: llm.batches.openai.list.nonstream.works, module: llm, tier: P0, subject_endpoint: batches, route: openai, capability: basic, streaming: nonstream, assertions: [works], source: "test_batches_e2e.py", rationale: "Batch list envelope"}
 - {id: llm.batches.openai.file_lifecycle.nonstream.works, module: llm, tier: P0, subject_endpoint: batches, route: openai, capability: basic, streaming: nonstream, assertions: [works], source: "test_batches_e2e.py", rationale: "File upload/retrieve/delete for batch flow"}
-- {id: llm.batches.openai.passthrough.nonstream.works, module: llm, tier: P1, subject_endpoint: batches, route: openai, capability: basic, streaming: nonstream, assertions: [works], source: "test_passthrough_e2e.py", rationale: "GET /openai_passthrough/v1/batches relays OpenAI's own batch page; the dedicated prefix must not bind as a provider name on the /{provider}/v1/batches route (LIT-5870)"}
+- {id: llm.batches.openai.passthrough.nonstream.works, module: llm, tier: P1, subject_endpoint: batches, route: openai, capability: basic, streaming: nonstream, assertions: [works], source: "test_passthrough_e2e.py", rationale: "GET /openai_passthrough/v1/batches relays OpenAI's own batch page; the dedicated prefix must not bind as a provider name on the /{provider}/v1/batches route (GitHub issue #36086)"}
 - {id: llm.batches.openai_encoded.basic.nonstream.works, module: llm, tier: P0, subject_endpoint: batches, route: openai, capability: basic, streaming: nonstream, assertions: [works], source: "batches/capabilities.py", rationale: "Encoded scenario lifecycle"}
 - {id: llm.batches.openai_unified.basic.nonstream.works, module: llm, tier: P0, subject_endpoint: batches, route: openai, capability: basic, streaming: nonstream, assertions: [works], source: "batches/capabilities.py", rationale: "Unified/managed-id scenario"}
 - {id: llm.batches.openai_model_param.basic.nonstream.works, module: llm, tier: P0, subject_endpoint: batches, route: openai, capability: basic, streaming: nonstream, assertions: [works], source: "batches/capabilities.py", rationale: "Model-param scenario"}
@@ -31,8 +31,8 @@
 - {id: llm.files.openai.retrieve.nonstream.works, module: llm, tier: P0, subject_endpoint: files, route: openai, capability: basic, streaming: nonstream, assertions: [works], source: "files_endpoints.py", rationale: "File retrieve by id"}
 - {id: llm.files.openai.delete.nonstream.works, module: llm, tier: P0, subject_endpoint: files, route: openai, capability: basic, streaming: nonstream, assertions: [works], source: "files_endpoints.py", rationale: "File delete returns deleted=true"}
 - {id: llm.files.openai.list.nonstream.works, module: llm, tier: P0, subject_endpoint: files, route: openai, capability: basic, streaming: nonstream, assertions: [works], source: "files_endpoints.py", rationale: "File list paginated"}
-- {id: llm.files.openai.list_isolation.nonstream.works, module: llm, tier: P0, subject_endpoint: files, route: openai, capability: basic, streaming: nonstream, assertions: [works], source: "test_batches_e2e.py", rationale: "GET /v1/files pagination cursors address only rows the caller owns; on a shared provider account the upstream cursors otherwise hand out other tenants' raw provider file ids (LIT-5870)"}
-- {id: llm.files.openai.passthrough.nonstream.works, module: llm, tier: P1, subject_endpoint: files, route: openai, capability: basic, streaming: nonstream, assertions: [works], source: "test_passthrough_e2e.py", rationale: "POST/DELETE /openai_passthrough/v1/files relay OpenAI's own file object; the dedicated prefix must not bind as a provider name on the /{provider}/v1/files route (LIT-5870)"}
+- {id: llm.files.openai.list_isolation.nonstream.works, module: llm, tier: P0, subject_endpoint: files, route: openai, capability: basic, streaming: nonstream, assertions: [works], source: "test_batches_e2e.py", rationale: "GET /v1/files pagination cursors address only rows the caller owns; on a shared provider account the upstream cursors otherwise hand out other tenants' raw provider file ids (GitHub issue #36087)"}
+- {id: llm.files.openai.passthrough.nonstream.works, module: llm, tier: P1, subject_endpoint: files, route: openai, capability: basic, streaming: nonstream, assertions: [works], source: "test_passthrough_e2e.py", rationale: "POST/DELETE /openai_passthrough/v1/files relay OpenAI's own file object; the dedicated prefix must not bind as a provider name on the /{provider}/v1/files route (GitHub issue #36086)"}
 - {id: llm.files.azure_openai.upload.nonstream.works, module: llm, tier: P0, subject_endpoint: files, route: azure_openai, capability: basic, streaming: nonstream, assertions: [works], source: "batches/capabilities.py:45", rationale: "Azure file upload managed backend"}
 - {id: llm.files.vertex.upload.nonstream.works, module: llm, tier: P0, subject_endpoint: files, route: vertex, capability: basic, streaming: nonstream, assertions: [works], source: "batches/capabilities.py:52", rationale: "Vertex file upload to GCS"}
 - {id: llm.files.bedrock.upload.nonstream.works, module: llm, tier: P0, subject_endpoint: files, route: bedrock_converse, capability: basic, streaming: nonstream, assertions: [works], source: "batches/capabilities.py:59", rationale: "Bedrock file upload to S3"}

tests/e2e/llm_translation/test_passthrough_e2e.py

@@ -230,6 +230,8 @@ class TestOpenAIPassthroughPrefix:
     def test_passthrough_prefix_uploads_a_file_to_openai(
         self, client: PassthroughClient, resources: ResourceManager, scoped_key: str
     ) -> None:
+        """Pins GitHub issue #36086: a file upload through the dedicated prefix
+        reaches OpenAI's file API instead of 500ing on a provider-name lookup."""
         content = f'{{"marker":"{unique_marker()}"}}\n'.encode()
         uploaded = unwrap(
             client.openai_passthrough_upload_file(
@@ -250,6 +252,8 @@ class TestOpenAIPassthroughPrefix:
     def test_passthrough_prefix_lists_batches_from_openai(
         self, client: PassthroughClient, scoped_key: str
     ) -> None:
+        """Pins GitHub issue #36086 on the batches route: the dedicated prefix
+        relays OpenAI's own batch page instead of dying on the provider lookup."""
         listed = unwrap(client.openai_passthrough_list_batches(scoped_key))
 
         assert listed.object == "list", (
@@ -270,6 +274,9 @@ class TestOpenAIPassthroughSpend:
     def test_streamed_responses_call_logs_its_cost(
         self, client: PassthroughClient, scoped_key: str
     ) -> None:
+        """Pins GitHub issue #36523: a streamed passthrough Responses call is billed
+        under the provider id the caller was served, never a $0 row under a random
+        id."""
         result = client.openai_passthrough_responses(
             scoped_key,
             CHEAP_OPENAI_MODEL,
@@ -311,6 +318,8 @@ class TestOpenAIPassthroughSpend:
     def test_embeddings_call_logs_its_cost(
         self, client: PassthroughClient, scoped_key: str
     ) -> None:
+        """Pins GitHub issue #36646: a passthrough embeddings call writes a priced
+        spend row instead of no row at all."""
         result = client.openai_passthrough_embed(
             scoped_key, EMBEDDING_MODEL, f"cost this sentence {unique_marker()}"
         )