Expose HTTP transient retry control and preserve shared capacity

docs/operations.md

@@ -114,7 +114,8 @@ transient provider statuses by default. Account for added calls, latency, and
 cost when planning capacity. Each repair generation has its own transient
 budget, separate from the structural repair count. Configure the engine budget
 with [`transient_retries`](config.md); `run` and `render` accept a request
-override described in the [CLI contract](cli.md). Omission inherits the engine
+override described in the [CLI contract](cli.md), and HTTP callers can select
+one through the [API contract](api.md). Omission inherits the engine
 setting and then Promptkit's default, while explicit zero disables additional
 attempts. Existing generation timeouts apply
 per attempt, while the caller context covers the complete operation. Provider