ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）

chapter9/hermes-self-evolution/review_task_8.md

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+# Eighth independent review: pre-existing sidecar composition
+
+The fifth terminal acceptance review rejected the candidate after all focused
+checks passed. Continue the same self-update and correct this production-path
+collision:
+
+- `append_persistent_model_status()` currently treats any existing non-empty
+  `api_content` as an already installed status projection and returns it
+  unchanged.
+- Hermes already uses `api_content` for ordinary API-only composition,
+  including memory/plugin prefetch context and sanitization-divergence replay.
+  `build_turn_context()` can populate the current user sidecar before the model
+  status helper runs. On that normal path, enabling the feature silently adds
+  no `<agent_status>` block.
+- Existing tests cover only messages with no pre-existing sidecar.
+
+Compose safely with pre-existing string sidecars while remaining idempotent.
+Distinguish a projection owned by this feature from unrelated API-only content
+using a bounded, deterministic representation that survives persistence and
+reload. Never parse or delete clean transcript content. If using an ownership
+marker/suffix, recognize only the exact feature-owned terminal form and preserve
+the pre-existing sidecar byte-for-byte; malformed/lookalike user or plugin text
+must be treated as ordinary base content rather than destructively replaced.
+Retain fail-closed handling for unsupported types and stable-row database
+backfill.
+
+Add regression coverage for a realistic pre-existing string `api_content`
+sidecar (representing memory/plugin prefetch), repeated same-message request
+builds, database close/reopen, and exact byte preservation of the original
+sidecar plus exactly one status projection. Include a malformed/lookalike marker
+case if the chosen ownership scheme can collide with ordinary content.
+
+Run the focused tests, existing sidecar/cache/turn-context regressions,
+compilation, and `git diff --check`. Update `BOOK_SELF_EVOLUTION_REPORT.md` with
+this eighth review and exact results. Do not edit the book, commit, push, or
+claim downstream task improvement.