[AI-8th] optimizes SOFABoot bean async initialization

[pmupkin]

Summary

This PR(Related issue #1408) optimizes SOFABoot bean async initialization by adding smart async candidate analysis, unified async-init configuration, startup optimization reporting, and an actuator endpoint for optimization suggestions.

Changes

• Added SmartAsyncInitAnalyzer to automatically identify safe async-init candidates based on bean metadata, dependency signals, stateful annotations, constructor/property references, and auto mode.
• Added async-init configuration properties under sofa.boot.async-init, including:
  • enabled
  • corePoolSize
  • maxPoolSize
  • queueCapacity
  • timeoutMillis
  • autoMode
• Added AsyncInitAutoMode with OFF, CONSERVATIVE, and AGGRESSIVE modes.
• Enhanced async-init processing to preserve explicit @SofaAsyncInit and XML configuration behavior.
• Added timeout support to AsyncInitMethodManager.
• Added startup optimization model and analyzer:
  • StartupOptimizer
  • StartupReport
  • BeanInitInfo
  • StartupRecommendation
• Added startup-optimization actuator endpoint to expose startup bottleneck analysis and slow bean information.
• Added actuator auto-configuration for the new startup optimization endpoint.
• Added focused unit tests for analyzer behavior, async-init configuration binding, timeout handling, startup recommendations, endpoint behavior, and auto-configuration.

Compatibility

• Keeps compatibility with existing @SofaAsyncInit usage.
• Explicit async-init enable/disable declarations continue to take precedence.
• Legacy async executor properties remain supported.
• Async initialization can be disabled with:

sofa:
  boot:
    async-init:
      enabled: false

[codecov]

Codecov Report

❌ Patch coverage is 70.91503% with 89 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.61%. Comparing base (459b02f) to head (ee19b3d).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
...pay/sofa/runtime/async/SmartAsyncInitAnalyzer.java	47.41%	37 Missing and 24 partials ⚠️
...lipay/sofa/boot/startup/StartupRecommendation.java	37.50%	10 Missing ⚠️
...com/alipay/sofa/boot/startup/StartupOptimizer.java	83.92%	2 Missing and 7 partials ⚠️
...onfigure/runtime/SofaRuntimeAutoConfiguration.java	84.61%	0 Missing and 4 partials ⚠️
...ava/com/alipay/sofa/boot/startup/BeanInitInfo.java	88.23%	2 Missing ⚠️
.../actuator/startup/StartupOptimizationEndpoint.java	85.71%	0 Missing and 1 partial ⚠️
...oot/autoconfigure/runtime/AsyncInitProperties.java	96.00%	1 Missing ⚠️
...time/spring/AsyncInitBeanFactoryPostProcessor.java	92.30%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1423      +/-   ##
============================================
- Coverage     82.94%   82.61%   -0.34%     
- Complexity     2975     3080     +105     
============================================
  Files           340      349       +9     
  Lines          9833    10128     +295     
  Branches       1178     1241      +63     
============================================
+ Hits           8156     8367     +211     
- Misses         1163     1214      +51     
- Partials        514      547      +33     

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