在SkillToolFactory中操作AgentSkill对外提供的方法，而不是私有属性，提升外部可扩展性。如：外部可通过监控getRe…

[xingkaima2023]

…source方法感知技能渐进式加载状态

AgentScope-Java Version

[The version of AgentScope-Java you are working on, e.g. 1.0.12, check your pom.xml dependency version or run mvn dependency:tree | grep agentscope-parent:pom(only mac/linux)]

Description

[Please describe the background, purpose, changes made, and how to test this PR]

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

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[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...ava/io/agentscope/core/skill/SkillToolFactory.java	66.66%	0 Missing and 2 partials ⚠️

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