Docs sync: AI and automation updates

[HynLcc]

Summary

• Refresh AI Chat docs in English and Chinese with current context, node mentions, table/app/automation creation, temporary HTML previews, file reading, and prompting tips.
• Clarify AI Field image generation and HTTP Request dynamic value formatting without over-documenting model-specific details.
• Reorganize sidebar navigation so Automation sits before Base, Base contains Table / Field / Record / View, and Authority Matrix uses an overview / guidelines structure.
• Rename overview-style pages and clean duplicate introductory wording across Space, Base, Automation, and Authority Matrix pages.

Files Changed

• docs.json
• en/basic/ai/ai-chat.mdx / zh/basic/ai/ai-chat.mdx
• en/basic/automation.mdx / zh/basic/automation.mdx
• en/basic/automation/actions/logic/http-request.mdx / zh/basic/automation/actions/logic/http-request.mdx
• en/basic/field/ai/ai-field.mdx / zh/basic/field/ai/ai-field.mdx
• en/basic/base/base.mdx / zh/basic/base/base.mdx
• en/basic/authority-matrix/* / zh/basic/authority-matrix/*
• zh/basic/space.mdx