fix(review): align runtime-context diagnostics and docs

packages/bash/bash-sandbox/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/bash/bash-sandbox/README.md
-README.md: e9b040e7af55192e8afb9abf8bb4b99358ef8342
-README.zh.md: f3956111f31ad85331caa47b1755667b096d2969
+README.md: 035a8ad2401ca608d264049d454359eda7b2b9a7
+README.zh.md: cee27a9baaa539ba07eb1d730ea9bef2004fbeeb

packages/bash/bash-sandbox/README.md

@@ -52,7 +52,7 @@ Small fixed schema increment on requests where `bash` is visible, plus the curre
 
 #### KV Cache effect
 
-Prefix-stable while the executor and standing policy are unchanged. Changing the policy updates the owner-rendered section; changing executor capabilities also alters the `bash` schema.
+A standing-policy change appends a complete owner-rendered context snapshot after retained history, preserving the existing system/history prefix byte-for-byte. Changing executor capabilities alters the `bash` schema.
 
 ### Bash tool result, indirectly
 

packages/bash/bash-sandbox/README.zh.md

@@ -52,7 +52,7 @@
 
 #### KV Cache 影响
 
-执行器与常驻策略不变时，前缀保持稳定。更改策略会更新归属方渲染的段落；更改执行器能力也会改变 `bash` schema。
+常驻策略变化会在保留的历史之后追加一份由归属方渲染的完整上下文快照，并使既有 system/history 前缀保持逐字节不变。更改执行器能力会改变 `bash` schema。
 
 ### 间接的 Bash 工具结果