Proposal: Add Iterative / Quality-Gated Orchestration Pattern

[vixb99]

What problem are we solving?

There are many agent workflows where one generation is simply not enough.

For example:

Generate → Review → Improve → Review again

Today, developers have to build this loop themselves. We could provide a reusable pattern for it in MAF.

Proposed idea

Add an IterativeBuilder that keeps running the workflow until the output passes a quality check or reaches the maximum number of iterations.

    ┌──────────┐
    │ Generate │
    └────┬─────┘
         ↓
    ┌──────────┐
    │ Evaluate │
    └────┬─────┘
         ↓
   ┌─────────────┐
   │ Quality OK? │
   └──┬──────┬───┘
    YES      NO
     ↓        ↓
  Output   Improve
              │
              └──────→ Generate

Example
workflow = (
IterativeBuilder()
.generate(generator)
.evaluate(evaluator)
.improve(improver)
.max_iterations(3)
.build()
)

The main idea is simple:

Generate something, check its quality, improve it if needed, and stop when it is good enough.

This could be useful for:

Draft → Critique → Rewrite
Code → Test → Fix
Generate → Validate → Refine
RAG Answer → Evaluate → Improve

It gives developers a common way to implement these iterative workflows instead of creating the loop manually each time.