Replace protocol-driven with metadata-driven in all documentation

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

content/docs/00-framework/ai-codex.mdx

@@ -9,7 +9,7 @@ This guide helps developers leverage AI tools to enhance ObjectStack development
 
 ## Why AI Collaboration
 
-ObjectStack, as a protocol-driven platform, involves a lot of:
+ObjectStack, as a metadata-driven platform, involves a lot of:
 - Schema definitions
 - UI protocol configurations
 - Repetitive CRUD code

content/docs/00-framework/index.mdx

@@ -15,7 +15,7 @@ If you are new to ObjectStack, we recommend reading these in order:
 [Welcome to ObjectStack](./welcome): An overview of the platform, its three core engines (ObjectQL, ObjectUI, ObjectOS), and why we built it.
 
 ### 2. The Manifesto
-[The Manifesto](./manifesto): Understanding the "Protocol-Driven" philosophy is key to mastering ObjectStack. Learn why we prioritize **Data Sovereignty** and **Technical Decoupling**.
+[The Manifesto](./manifesto): Understanding the "Metadata-Driven" philosophy is key to mastering ObjectStack. Learn why we prioritize **Data Sovereignty** and **Technical Decoupling**.
 
 ### 3. The AI Codex
 [The AI Codex](./ai-codex): ObjectStack is designed to be AI-native. Learn how to leverage LLMs to generate 80% of your application code using our standardized JSON protocols.

content/docs/00-framework/welcome.mdx

@@ -17,7 +17,7 @@ Your data belongs to you. ObjectStack applications store data locally by default
 ### 2. Database Agnostic
 **Write once, adapter everywhere.** Don't bind your business logic to a specific database vendor. ObjectStack's protocol layer abstracts the underlying storage, allowing you to migrate freely between MySQL, PostgreSQL, SQLite, Oracle, and SQL Server.
 
-### 3. Protocol-Driven Development
+### 3. Metadata-Driven Development
 We separate the *what* from the *how*. You define your Backend (ObjectQL) and Frontend (ObjectUI) using standard JSON protocols, significantly reducing boilerplate code and technical debt.
 
 ---
@@ -66,5 +66,5 @@ ObjectOS connects ObjectQL and ObjectUI into a cohesive runtime environment, han
 ## Next Steps
 
 - **[Quick Start](../01-quickstart)**: Deploy your first application in 5 minutes.
-- **[The Manifesto](./manifesto)**: Deep dive into our "Protocol-Driven" design philosophy.
+- **[The Manifesto](./manifesto)**: Deep dive into our "Metadata-Driven" design philosophy.
 - **[The AI Codex](./ai-codex)**: Learn how AI accelerates ObjectStack development.

content/docs/cn/00-framework/ai-codex.mdx

@@ -9,7 +9,7 @@ description: 使用 AI 辅助开发 ObjectStack 项目的最佳实践
 
 ## 为什么需要 AI 协作
 
-ObjectStack 作为一个协议驱动的平台，有大量的：
+ObjectStack 作为一个元数据驱动的平台，有大量的：
 - Schema 定义
 - UI 协议配置
 - 重复性 CRUD 代码

content/docs/cn/00-framework/welcome.mdx

@@ -7,13 +7,13 @@ description: 了解 ObjectStack 的项目愿景和核心组件
 
 ## 项目愿景
 
-ObjectStack 是一个本地优先、跨数据库、协议驱动的全栈应用开发平台。
+ObjectStack 是一个本地优先、跨数据库、元数据驱动的全栈应用开发平台。
 
 ### 核心价值主张
 
 - **本地优先（Local-First）**：数据存储在本地，用户拥有完整的数据控制权
 - **跨数据库（Database-Agnostic）**：一次开发，可在任意数据库上运行
-- **协议驱动（Protocol-Driven）**：通过标准化协议实现业务逻辑与技术实现的分离
+- **元数据驱动（Metadata-Driven）**：通过标准化协议实现业务逻辑与技术实现的分离
 
 ## 核心组件
 
@@ -93,7 +93,7 @@ ObjectOS 是粘合 ObjectQL 和 ObjectUI 的运行时平台：
 
 ### 2. 开发效率
 
-通过协议驱动的方式，大幅减少重复性代码编写，提升开发效率。
+通过元数据驱动的方式，大幅减少重复性代码编写,提升开发效率。
 
 ### 3. 灵活部署
 

content/docs/index.mdx

@@ -1,13 +1,13 @@
 ---
 title: Introduction
-description: ObjectStack - The Protocol-Driven Development Platform
+description: ObjectStack - The Metadata-Driven Development Platform
 ---
 
 # ObjectStack Documentation
 
 **ObjectStack** is a full-stack, local-first development platform designed for **data sovereignty** and **technical decoupling**. 
 
-It standardizes the development process using a "Protocol-Driven" architecture, separating business logic from technical implementation.
+It standardizes the development process using a "Metadata-Driven" architecture, separating business logic from technical implementation.
 
 ## Core Products