refactor: final adjustments for vector management and add spotless plugin

[lzq986]

Describe what this PR does / why we need it

1. 本次这次调整是不再依赖 AgentVectorStoreManager.java，解决之前硬编码向量不能扩展其他向量库的问题，用户只需要后台配置一个向量库即可，做了代码抽象，为后续的向量扩展提供基础。
2. 补充回来spotless插件
3. 删除部分无调用的代码

Does this pull request fix one issue?

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Special notes for reviews

[lzq986]

@VLSMB @zxuexingzhijie 辛苦审核下本次调整。涉及的比较多文件

[lzq986]

Related to [Task] 代码大重构 #37

[Copilot]

Pull Request Overview

This PR refactors the vector management system to remove hardcoded dependencies and improve extensibility, while also adding the Spotless code formatting plugin.

• Abstracts vector store management to support multiple vector database implementations
• Removes hardcoded AgentVectorStoreManager.java and introduces new service interfaces
• Adds Spotless plugin for automatic code formatting

Reviewed Changes

Copilot reviewed 27 out of 27 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
AbstractVectorStoreService.java	Major refactor - Introduces agent-based vector store operations with metadata filtering
AgentVectorStoreService.java	New interface defining agent-specific vector store operations
SimpleVectorStoreService.java	Simplified to extend abstract base class and focus on SimpleVectorStore implementation
AnalyticVectorStoreService.java	Refactored to support AnalyticDbVectorStore implementation
VectorStoreServiceFactory.java	Updated to create AgentVectorStoreService implementations
AgentVectorService.java	Refactored to use new AgentVectorStoreService interface
AgentSearchRequest.java	New request model with agent-specific search parameters
DocumentConverterUtil.java	Added agent-aware document conversion methods
SchemaProcessorUtil.java	Added database configuration creation utility
Various other files	Cleanup of unused code and interface adjustments
pom.xml	Added Spotless plugin configuration

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[zxuexingzhijie]

LGTM