feature: implement business data source query MCP tool on the console module

[Xb2555]

• I have read the CONTRIBUTING.md guidelines.
• I have registered the PR changes.

Ⅰ. Describe what this PR did

1. Implemented the creation of DataSource instances for three types of connection pools
2. The MCP tool that enables natural language queries
3. Achieved the function of dynamically configuring by including business data source configuration parameters in the request headers during connection.

Ⅱ. Does this pull request fix one issue?

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.99%. Comparing base (2f3de1c) to head (d8f86bb).
⚠️ Report is 1 commits behind head on 2.x.

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x    #8032      +/-   ##
============================================
+ Coverage     72.92%   72.99%   +0.06%     
  Complexity      883      883              
============================================
  Files          1327     1327              
  Lines         50769    50769              
  Branches       6058     6058              
============================================
+ Hits          37025    37058      +33     
+ Misses        10735    10705      -30     
+ Partials       3009     3006       -3     

Files with missing lines	Coverage Δ
...n/java/org/apache/seata/core/constants/DBType.java	100.00% <ø> (ø)

... and 9 files with indirect coverage changes

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[Copilot]

Pull request overview

This PR adds a new business-data-source MCP tool to the console module so that natural-language MCP clients can list resource ids, list tables, inspect table schemas, and run read-only SQL against external business databases. Data sources can be defined statically under seata.businessDataSources in the namingserver application.yml, or registered dynamically per request via the X-DB-Config HTTP header. Three connection-pool implementations (Druid, HikariCP, DBCP) are provided. The runtime configuration and an explicit MySQL 8 driver dependency are wired into the namingserver app, which already depends on seata-console.

Changes:

• New MCP package under console/.../mcp/ containing BusinessDataSourcesProperties, DataSourceFactory, {Druid,Hikari,Dbcp}DataSourceProvider, AbstractMCPDataSourceProvider, SqlExecutionTemplate, BusinessDataSourceService(Impl), and BusinessDataSourceTools.
• New MCPBusinessDataSourceFilter registered in WebSecurityConfig to translate the X-DB-Config header into runtime data-source registrations.
• Build/runtime wiring: pool dependencies added to console/pom.xml, MySQL 8 driver added to namingserver/pom.xml, and example seata.businessDataSources + seata.mcp blocks added to namingserver/src/main/resources/application.yml.

Reviewed changes

Copilot reviewed 16 out of 17 changed files in this pull request and generated 13 comments.

Show a summary per file

File	Description
console/pom.xml	Adds Druid/DBCP/HikariCP pool dependencies.
namingserver/pom.xml	Adds explicit mysql-connector-java 8.0.27 dependency.
namingserver/src/main/resources/application.yml	Adds MCP and businessDataSources example config; relocates the misplaced mcp block.
common/.../core/constants/DBType.java	Reintroduces a comprehensive DBType enum used by validation queries.
console/.../console/config/WebSecurityConfig.java	Wires in the new MCPBusinessDataSourceFilter before the JWT filter.
console/.../console/filter/MCPBusinessDataSourceFilter.java	Per-request filter that registers data sources from X-DB-Config.
console/.../mcp/core/constant/SqlConstant.java	MySQL INFORMATION_SCHEMA queries for table/column metadata.
console/.../mcp/core/props/BusinessDataSourcesProperties.java	Static + dynamic data-source property store; YAML scanning + JSON registration.
console/.../mcp/service/BusinessDataSourceService(.java/Impl)	Service layer over SqlExecutionTemplate for table/schema/run-sql.
console/.../mcp/store/SqlExecutionTemplate.java	Read-only SELECT executor with naive WHERE/parameter checks.
console/.../mcp/store/DataSourceFactory.java	Static registry caching DataSources; chooses pool by config.
console/.../mcp/store/{Druid,Hikari,Dbcp}DataSourceProvider.java	Pool-specific DataSource builders.
console/.../mcp/store/db/AbstractMCPDataSourceProvider.java	Shared driver/classloader logic and property accessors.
console/.../mcp/tools/BusinessDataSourceTools.java	New @McpTool entry points: getResourceIds, getTableNames, getTableSchema, runSql.

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[xjlgod]

Why upgrade to this version?

[xjlgod]

This PR has quite a bit of content. Has it already passed code review? When the release is planned?