fix: expose sanitized AIRegistry upload errors

[hhhhzzzj]

Description

When AIRegistry rejected a SKILL package, uploadFromZip converted every exception to INTERNAL_ERROR, so validation failures such as an invalid version or unsupported file were hard to diagnose.

This change:

• reuses the existing TeaException error-code mapping for SKILL uploads;
• includes a sanitized SDK validation message for mapped client errors;
• keeps network failures, unknown exceptions, and unmapped Tea errors on the generic INTERNAL_ERROR response;
• adds regression tests for validation details, sensitive-data removal, and generic failures.

Related Issues

Fix #336

Type of Change

• Bug fix (non-breaking change which fixes an issue)

Testing

• Unit tests added/updated
• Code quality checks passed
• Code is self-reviewed

Commands run:

• ./mvnw.cmd -pl himarket-server -am -Dtest=AiRegistrySkillServiceImplTest -Dsurefire.failIfNoSpecifiedTests=false test
• ./mvnw.cmd -q spotless:check -DskipTests
• ./mvnw.cmd -q -DskipTests test-compile
• git diff --check

The focused test suite passes with 5 tests.

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