Add PR description file for execpolicy refactor

docs/config.md

@@ -603,7 +603,7 @@ metadata above):
 - `codex.tool_decision`
   - `tool_name`
   - `call_id`
-  - `decision` (`approved`, `approved_allow_prefix`, `approved_for_session`, `denied`, or `abort`)
+  - `decision` (`approved`, `approved_execpolicy_amendment`, `approved_for_session`, `denied`, or `abort`)
   - `source` (`config` or `user`)
 - `codex.tool_result`
   - `tool_name`

docs/execpolicy.md

@@ -53,10 +53,10 @@ When no rules match, `matchedRules` is an empty array and `decision` is omitted.
 
 ```json
 {
-  "matchedRules": [],
+  "matchedRules": []
 }
+```
 
 ## Status
 
 `execpolicy` commands are still in preview. The API may have breaking changes in the future.
-```