Parallel Article Quality Pipeline

Problem Description

A media analytics company publishes several hundred articles per day across multiple channels and needs an automated quality-assurance pipeline to keep standards high without bottlenecking editorial staff. Each incoming article must be classified for sentiment and assigned a quality score, and those that score below an editorial threshold need to go through a refinement loop: an editor agent rewrites the article, the scorer re-evaluates it, and the cycle continues until the score is acceptable or a maximum number of revision attempts is exhausted.

Speed matters: the classification and initial scoring phase should process a whole batch of articles at once rather than one at a time down a serial queue. The engineering team wants to build this pipeline with the LangChain4j agentic framework in Java. They've been burned before by thread-safety bugs, runaway token bills, and refinement loops that never terminate, so reliability under load is a stated priority.

Output Specification

Produce a self-contained Java project with the following files:

• build.gradle.kts — Gradle build configuration
• src/main/java/pipeline/ — Java source files including:
  • Agent interfaces for article classification, quality scoring, and article refinement
  • A main/wiring class Pipeline.java that:
    • Constructs the parallel processing stage (processing multiple articles concurrently)
    • Constructs the iterative refinement loop stage
    • Chains these into a complete pipeline
    • Demonstrates the pipeline on a hardcoded sample batch of 3 articles (write them inline in the main method)
    • Produces an execution report after the run

The project must compile cleanly. The execution report file should be written to the project directory so it is visible after running.