diff --git a/knowledge/repos/vllm-omni/models/personaplex/rules.md b/knowledge/repos/vllm-omni/models/personaplex/rules.md
index a8ae368a..72737698 100644
--- a/knowledge/repos/vllm-omni/models/personaplex/rules.md
+++ b/knowledge/repos/vllm-omni/models/personaplex/rules.md
@@ -1,10 +1,10 @@
 ---
 title: "PersonaPlex 规则"
 created: 2026-09-02
-updated: 2026-10-09
+updated: 2026-10-11
 type: rule
 tags: [vllm-omni, models, model-executor]
-sources: ["PR #4771", "PR #6318", docs/design/fullduplex-personaplex.md, vllm_omni/model_executor/models/personaplex/duplex/serving_adapter.py, vllm_omni/model_executor/stage_input_processors/personaplex.py, tests/e2e/features/fullduplex/, tests/entrypoints/openai_api/test_duplex_handler.py, "PR #7399", "PR #7481", "PR #8670"]
+sources: ["PR #4771", "PR #6318", docs/design/fullduplex-personaplex.md, vllm_omni/model_executor/models/personaplex/duplex/serving_adapter.py, vllm_omni/model_executor/stage_input_processors/personaplex.py, tests/e2e/features/fullduplex/, tests/entrypoints/openai_api/test_duplex_handler.py, "PR #7399", "PR #7481", "PR #8670", "PR #8751"]
 confidence: high
 ---
 
@@ -139,4 +139,13 @@ confidence: high
   两条前缀）与 nightly（选择同样前缀、NonBlocking、120/110 超时结构、预期 artifact 路径）；
   重命名测试函数时必须同步 deselect 前缀与 contract。^[PR #8670]
 
-<!-- kb:rule status=active since=v0.30.0 -->
+<!-- kb:rule status=retired since=v0.30.0 retired_at=v0.30.0 reason=superseded evidence="PR #8751 diff：.buildkite/amd/test-amd-merge.yml 与 test-amd-ready.yml 各删除 temporal --deselect 行、仅保留 mimi 行；test-amd-nightly.yml 的 collect-only 与 run 命令都只剩 test_mimi_streaming_step_matches_legacy_end_to_end；tests/buildkite/test_amd_pipeline.py 同步更新；changed_files 含 tests/model_executor/models/personaplex/test_ring_per_row_offsets.py，其 diff 删除了 test_ring_slot_recycle_masks_old_history。PR body 明确：“#8670 added AMD pipeline steps that name the temporal parity test removed here. Those entries are dropped, and the Mimi streaming stress case keeps its nightly owner.” 且 “The ring-KV and RoPE primitives that Mimi uses stay in personaplex_temporal.py.”" superseded_by=VLLM-OMNI-PR8751-AMD-PPLEX-NIGHTLY -->
+
+## VLLM-OMNI-PR8751-AMD-PPLEX-NIGHTLY — PersonaPlex Mimi 压力用例只在 AMD nightly 串行承接
+
+- 触发：改动 `.buildkite/amd/test-amd-ready.yml`、`.buildkite/amd/test-amd-merge.yml`、`.buildkite/amd/test-amd-nightly.yml` 的 Model Executor CPU shard 或 “Simple · PersonaPlex Temporal Streaming Test” 步骤；重命名或删除 `tests/model_executor/models/personaplex/test_temporal_streaming_hoist.py` 中的 `test_mimi_streaming_step_matches_legacy_end_to_end`；或修改 `tests/buildkite/test_amd_pipeline.py` 的 AMD pipeline contract。
+- 强制：AMD READY/MERGE 的 Model Executor 步骤保持 `-m 'core_model and cpu and not omni'` 与 `--num-shards=$$BUILDKITE_PARALLEL_JOB_COUNT`/`--shard-id=$$BUILDKITE_PARALLEL_JOB` 分片，只允许一条精确到 node 的 `--deselect` 前缀（`test_mimi_streaming_step_matches_legacy_end_to_end`），同文件其余快速节点继续留在阻塞 shard。被移出的 Mimi stress 用例由 nightly 的 PersonaPlex Temporal 步骤串行承接（collect-only、110m timeout、junitxml artifact）。三份 yml 与 `tests/buildkite/test_amd_pipeline.py` 断言的 contract 必须同步修改。
+- 禁止：恢复 `test_temporal_streaming_step_matches_legacy_end_to_end` 的 `--deselect` 或 nightly 条目——该用例已随 dead temporal stepper（`PersonaPlexTemporalStreaming`/`_TemporalLayer`）在 PR #8751 删除；把 `--deselect` 放宽为文件级或通配前缀；只改 yml 不改 `test_amd_pipeline.py`（或反之）；因 stepper 已删而连带删除 `personaplex_temporal.py` 中 Mimi 仍消费的 ring-KV/RoPE 原语。
+- 验收：READY/MERGE 只剩 Mimi 一条 `--deselect`；nightly 步骤的 collect 与 run 都只含 Mimi 用例；`tests/buildkite/test_amd_pipeline.py` 与三份 yml 当前内容一致并通过；`personaplex_temporal.py` 保留的 ring-KV/RoPE 原语仍由 `test_ring_per_row_offsets.py` 的存活用例覆盖——注意 PR #8751 同时删除了该文件中的 `test_ring_slot_recycle_masks_old_history`，不得把该文件的覆盖说成完全不变；原语的检查义务另受 PPLEX-HOIST-1a 约束。 ^[PR #8670] ^[PR #8751]
+
+<!-- kb:rule status=active since=v0.30.0 supersedes=VLLM-OMNI-PR8670-AMD-PPLEX-NIGHTLY -->