Module operators 

Operator algebra for agent composition.

All types implementing Composable participate in the algebra:

Operator	Meaning	Example
>>	Sequential pipeline	agent_a >> agent_b
|	Parallel fan-out	agent_a | agent_b
*	Loop (fixed)	agent * 3
//	Fallback chain	agent_a // agent_b

Structs

Fallback

Fallback chain: try each agent in sequence until one succeeds.

FanOut

Parallel fan-out: execute branches concurrently, merge results.

Loop

Loop: repeat an agent or pipeline up to max times, or until a predicate.

LoopPredicate

Predicate for conditional loop termination.

Pipeline

Sequential pipeline: execute steps in order, passing state between them.

Enums

Composable

A composable workflow node — can be sequenced, fan-out, looped, etc.

Functions

until

Create a conditional loop predicate.