docs(config): document session_search auxiliary controls

website/docs/user-guide/configuration.md

@@ -667,6 +667,8 @@ auxiliary:
     base_url: ""
     api_key: ""
     timeout: 30
+    max_concurrency: 3       # Limit parallel summaries to reduce request-burst 429s
+    extra_body: {}           # Provider-specific OpenAI-compatible request fields
 
   # Skills hub — skill matching and search
   skills_hub:
@@ -701,6 +703,34 @@ Each auxiliary task has a configurable `timeout` (in seconds). Defaults: vision
 Context compression has its own `compression:` block for thresholds and an `auxiliary.compression:` block for model/provider settings — see [Context Compression](#context-compression) above. The fallback model uses a `fallback_model:` block — see [Fallback Model](/docs/integrations/providers#fallback-model). All three follow the same provider/model/base_url pattern.
 :::
 
+### Session Search Tuning
+
+If you use a reasoning-heavy model for `auxiliary.session_search`, Hermes now gives you two built-in controls:
+
+- `auxiliary.session_search.max_concurrency`: limits how many matched sessions Hermes summarizes at once
+- `auxiliary.session_search.extra_body`: forwards provider-specific OpenAI-compatible request fields on the summarization calls
+
+Example:
+
+```yaml
+auxiliary:
+  session_search:
+    provider: "main"
+    model: "glm-4.5-air"
+    timeout: 60
+    max_concurrency: 2
+    extra_body:
+      enable_thinking: false
+```
+
+Use `max_concurrency` when your provider rate-limits request bursts and you want `session_search` to trade some parallelism for stability.
+
+Use `extra_body` only when your provider documents OpenAI-compatible request-body fields you want Hermes to pass through for that task. Hermes forwards the object as-is.
+
+:::warning
+`extra_body` is only effective when your provider actually supports the field you send. If the provider does not expose a native OpenAI-compatible reasoning-off flag, Hermes cannot synthesize one on its behalf.
+:::
+
 ### Changing the Vision Model
 
 To use GPT-4o instead of Gemini Flash for image analysis: