diff --git a/docs/configuration.md b/docs/configuration.md
index 7795cc9c..db74b3fd 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -22,7 +22,7 @@ Common variables:
 - `OPENAI_MODEL` (non-blank gateway chat alias; default `claude-haiku-5-5`)
 - `OPENAI_STREAMING_REQUEST_TIMEOUT_SECONDS` (default `90`; bounds the complete SDK call and the visible-output deadline, which shares this same budget)
 
-Non-secret generation policy is owned by `app.llm` in `application.properties`: `temperature`, `reasoning-effort`, `completion-output-token-budget`, `enrichment-output-token-budget`, `reranker-temperature`, `reranker-output-token-budget`, and `configured-provider-backoff-seconds`. The tested default is Claude Haiku 5.5 with `reasoning-effort=low`, which preserved quality while reducing latency and cost in the Java Chat matrix; both temperature settings stay at `1.0` and the gateway owns provider-specific sampling constraints. The override applies only to chat generation (streaming and text completions); JSON-object completions (reranker, enrichment) always inherit the gateway/model default so reasoning tokens cannot starve their small output budgets. Java Chat forwards the universal reasoning values `none`, `minimal`, `low`, `medium`, `high`, `xhigh`, and `max` without model inspection; the gateway owns upstream capability translation. A deterministic gateway `HTTP 422 unpreservable_reasoning_intent` means no provider can preserve the configured effort — lower or unset `reasoning-effort`; retrying unchanged cannot succeed.
+Non-secret generation policy is owned by `app.llm` in `application.properties`: `temperature`, `reasoning-effort`, `completion-output-token-budget`, `enrichment-output-token-budget`, `reranker-temperature`, `reranker-output-token-budget`, and `configured-provider-backoff-seconds`. The tested default is Claude Haiku 5.5 with `reasoning-effort=low`, which preserved quality while reducing latency and cost in the Java Chat matrix; both temperature settings stay at `1.0` and the gateway owns provider-specific sampling constraints. The override applies only to chat generation (streaming and text completions); JSON-object completions (reranker, enrichment) pin reasoning to `none` so reasoning tokens cannot starve their small output budgets. Java Chat forwards the universal reasoning values `none`, `minimal`, `low`, `medium`, `high`, `xhigh`, and `max` without model inspection; the gateway owns upstream capability translation. A deterministic gateway `HTTP 422 unpreservable_reasoning_intent` means no provider can preserve the configured effort — lower or unset `reasoning-effort`; retrying unchanged cannot succeed.
 
 ### Shared LLM gateway