docs: align human authorization guidance with ANP-03 v1.1

[Math1987]

🔗 Related Issue | 相关 Issue

Relates to #90.

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📝 PR Type | PR 类型

• Feature | 新功能
• Bugfix | 问题修复
• Documentation | 文档修改
• Style | 代码格式（不影响功能）
• Refactor | 重构
• Test | 测试相关
• Chore | 其他

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📋 Description | 描述

Aligns the human-authorization documentation with ANP-03 v1.1 without changing any wire format or implementation behavior.

Before:

• the English and Chinese technical white papers still described humanAuthorization as a dedicated DID verification relationship/key;
• ANP-03 showed authorizationLevel values without stating that they are non-normative examples;
• ANP-07 did not explicitly distinguish an interface-level requirement from completed authorization;
• the Chinese did:wba guide still listed humanAuthorization as DID key material.

After:

• did:wba authentication remains responsible for request identity;
• ANP-07 humanAuthorization: true declares an interface-level requirement;
• draft ANP-06 requiresHumanAuthorization remains a negotiation constraint, not proof of completed authorization;
• the applicable business protocol and authorization policies define how human authorization is obtained or evidenced.

The broader ANP-03 v1.1 refresh of docs/did-wba入门指南.md is intentionally out of scope; this PR only removes its directly conflicting human-authorization statement.

Updated English and Chinese documentation together where mirrored.

Validation:

• git diff --check
• verified all added repository-internal Markdown links resolve
• documentation-only change; no automated tests are applicable

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⚠️ Breaking Changes | 破坏性变更

• Yes
• No

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✅ Checklist | 检查项

• The code compiles correctly | 代码可以正确编译 — N/A, documentation-only
• All tests passed | 所有测试均通过 — N/A, documentation-only
• Relevant documentation updated | 已更新相关文档
• PR has been linked to the related issue | 已关联相关 Issue