feat(extensions): support chat completions API spring web starter

[Alexxigang]

AgentScope-Java Version

[The version of AgentScope-Java i'm working on: 1.0.7-SNAPSHOT]

Description

[Please describe the background, purpose, changes made, and how to test this PR]
add support for [Feature]: Chat Completions API Spring Web Starter
#219

Checklist

Please check the following items before code is ready to be reviewed.

• Code has been formatted with mvn spotless:apply
• All tests are passing (mvn test)
• Javadoc comments are complete and follow project conventions
• Related documentation has been updated (e.g. links, examples, etc.)
• Code is ready for review

[cla-assistant]

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1 out of 2 committers have signed the CLA.

✅ Alexxigang
❌ ruigangliu.lrg

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[codecov]

Codecov Report

❌ Patch coverage is 90.90909% with 44 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...pring/boot/chat/web/ChatCompletionsController.java	76.47%	13 Missing and 3 partials ⚠️
...ons/streaming/ChatCompletionsStreamingAdapter.java	84.14%	3 Missing and 10 partials ⚠️
...etions/builder/ChatCompletionsResponseBuilder.java	87.87%	3 Missing and 5 partials ⚠️
.../chat/service/ChatCompletionsStreamingService.java	76.47%	4 Missing ⚠️
...at/completions/converter/ChatMessageConverter.java	95.08%	0 Missing and 3 partials ⚠️

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[Copilot]

Pull request overview

This PR adds support for a Chat Completions API Spring Web Starter to AgentScope-Java, implementing an OpenAI-compatible HTTP API for chat completions. The implementation includes both streaming (SSE) and non-streaming endpoints, session management, message conversion, and comprehensive test coverage.

Key Changes:

• New Spring Boot starter module exposing Chat Completions HTTP API endpoints
• Session-based agent management with in-memory implementation
• Support for both streaming and non-streaming chat responses
• Comprehensive unit tests for all components

Reviewed changes

Copilot reviewed 24 out of 24 changed files in this pull request and generated 10 comments.

Show a summary per file

File	Description
agentscope-spring-boot-starters/pom.xml	Adds new chat-completions-web-starter module to parent POM
agentscope-chat-completions-web-starter/pom.xml	Defines dependencies for the new starter module
ChatCompletionsController.java	REST controller implementing POST endpoints for chat completions
ChatCompletionsStreamingService.java	Service handling SSE streaming responses
ChatMessageConverter.java	Converts HTTP DTOs to framework message objects
ChatCompletionsResponseBuilder.java	Builds response payloads for API responses
InMemorySessionManager.java	In-memory session management implementation
ChatCompletionsSessionManager.java	Interface for session management
ChatCompletionsWebAutoConfiguration.java	Spring Boot auto-configuration for the starter
ChatCompletionsProperties.java	Configuration properties for the web starter
API DTOs (ChatMessage.java, ChatCompletionsRequest.java, etc.)	Request/response data transfer objects
Test files	Comprehensive unit tests for all components
chat-completions-web example	Example Spring Boot application demonstrating the starter usage

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[Copilot]

Pull request overview

Copilot reviewed 33 out of 33 changed files in this pull request and generated 15 comments.

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