Added support for the service_tier key in profiles

docs/integrations/http-api.md

@@ -46,6 +46,7 @@ Copyable request example file:
     "max_tokens": 800,
     "top_p": 1.0,
     "timeout_seconds": 120,
+    "service_tier": "priority",
     "reasoning_effort": "medium",
     "api_key_env": "SCRIPTORIUM_API_KEY",
     "extra_params": {
@@ -114,6 +115,7 @@ Response shape:
       "max_tokens": 800,
       "top_p": 1,
       "timeout_seconds": 120,
+      "service_tier": "priority",
       "reasoning_effort": "medium",
       "api_key_env": "SCRIPTORIUM_API_KEY",
       "extra_params": {

docs/integrations/openai-compatible-chat.md

@@ -30,8 +30,11 @@ Serialized JSON fields:
 - `temperature` (only when non-zero)
 - `max_tokens` (only when non-zero)
 - `top_p` (only when non-zero)
+- `service_tier` (only when non-empty)
 - `response_format` (only when structured output is provided)
 
+`service_tier` is provider-specific. OpenRouter currently documents request values such as `flex` and `priority`; Scriptorium forwards any non-empty configured value and lets the backend validate support.
+
 Structured output is currently `json_schema` only, serialized as:
 
 ```json