docs(codex): the example contradicted the paragraph under it

docs-site/src/content/docs/guides/codex-integration.md

@@ -23,6 +23,7 @@ model_catalog_json = "/absolute/path/to/opencodex-catalog.json"
 # Auto-injected by opencodex
 openai_base_url = "http://127.0.0.1:10100/v1"
 
+# only when fastMode is set; unset adds no [features] table
 [features]
 fast_mode = true
 ```

docs-site/src/content/docs/ja/guides/codex-integration.md

@@ -17,6 +17,7 @@ model_catalog_json = "/absolute/path/to/opencodex-catalog.json"
 # Auto-injected by opencodex
 openai_base_url = "http://127.0.0.1:10100/v1"
 
+# fastMode を設定した場合のみ。未設定なら [features] は作られません
 [features]
 fast_mode = true
 ```

docs-site/src/content/docs/ko/guides/codex-integration.md

@@ -17,6 +17,7 @@ model_catalog_json = "/absolute/path/to/opencodex-catalog.json"
 # Auto-injected by opencodex
 openai_base_url = "http://127.0.0.1:10100/v1"
 
+# fastMode를 설정했을 때만 들어갑니다. 설정하지 않으면 [features] 자체가 생기지 않습니다
 [features]
 fast_mode = true
 ```

docs-site/src/content/docs/ru/guides/codex-integration.md

@@ -24,6 +24,7 @@ model_catalog_json = "/absolute/path/to/opencodex-catalog.json"
 # Auto-injected by opencodex
 openai_base_url = "http://127.0.0.1:10100/v1"
 
+# только если fastMode задан; без него таблица [features] не создаётся
 [features]
 fast_mode = true
 ```

docs-site/src/content/docs/zh-cn/guides/codex-integration.md

@@ -23,6 +23,7 @@ model_catalog_json = "/absolute/path/to/opencodex-catalog.json"
 # Auto-injected by opencodex
 openai_base_url = "http://127.0.0.1:10100/v1"
 
+# 仅在设置了 fastMode 时写入；未设置则不会创建 [features] 表
 [features]
 fast_mode = true
 ```