Advance Clock

Required role: write or higher.

Moves NOW() forward by a specified amount. Returns the current clock time of the circuit.

Requires dev_tweaks.now_http_driven = true on the pipeline.

Forward-only: delta_ms is u64, so negative bodies are rejected at JSON parse time. delta_ms = null or omitted advances by one clock_resolution. Non-zero values round up to the next clock_resolution boundary, so a sub-resolution delta still moves the clock by one full tick.

The returned now_ms is the value the worker will emit on its next pipeline step; queries against materialized views may observe the previous NOW() until that step completes. Callers that need read-after-write semantics should poll the view.