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_7.md

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+# Seventh independent review: idempotent request rebuilds
+
+The fourth terminal acceptance review rejected the candidate after all focused
+tests passed. Continue the same self-update and correct this retry-path defect:
+
+- `append_persistent_model_status()` is not idempotent when the same newest
+  message is used to build another request (for example, a transient provider
+  failure, empty-response retry, or request rebuild before a new transcript
+  message). It computes `updated = base + "\n\n" + status` from wire content
+  that already contains the previous projection, so every rebuild adds another
+  `<agent_status>` block.
+- A direct production-helper exercise repeated the call 20 times and produced
+  20 status blocks, changing previously sent bytes and violating both the
+  prompt-cache stability claim and the total output bound.
+- Current tests always append a new transcript message before the next build
+  and therefore miss same-message retries.
+
+Make projection idempotent at the production persistence boundary. Preserve an
+unmodified base sidecar or safely recognize/replace only a status projection
+owned by this feature; do not delete user-authored text that merely resembles
+status markup. Decide and document whether volatile status values remain fixed
+for a retry of the same message or can be replaced, but previously sent prefix
+bytes must not drift unexpectedly. Keep clean transcript content unchanged,
+retain string-only fail-closed behavior, and durably persist the selected
+sidecar by stable row identity.
+
+Add a regression test that repeatedly builds requests with unchanged source
+messages, including a persisted/reloaded case. Assert identical wire bytes and
+exactly one owned status block. Retain realistic tool-call placement,
+persistence-reload, adversarial-bound, and unsupported-type coverage.
+
+Run the focused tests, existing sidecar/cache/turn-context regressions,
+compilation, and `git diff --check`. Update `BOOK_SELF_EVOLUTION_REPORT.md` with
+this seventh review and exact results. Do not edit the book, commit, push, or
+claim downstream task improvement.