Update ObjectStack Manifesto with 4 unshakable core principles

[Copilot]

Revised the manifesto to formalize ObjectStack's foundational commitments as 4 unshakable principles, strengthening the declarative tone and adding the new Stability Pledge.

Changes

Title & Framing

• Renamed from "The Manifesto" → "The ObjectStack Manifesto"
• Reframed introduction to emphasize "unshakable core principles" that maintain ecosystem health

Principle I: Protocol Neutrality

• Codified "Spec before Engine" mandate
• Explicitly rejected "implement first, standardize later" approach
• Prohibited language/database/runtime-specific logic in ObjectQL

Principle II: Mechanism over Policy

• Formalized ObjectQL (mechanism) vs ObjectOS (implementation) separation
• Added prohibition against polluting Protocol layer with implementation logic
• Provided concrete examples of forbidden vs. compliant patterns:

// ❌ FORBIDDEN: Implementation leaking into protocol
{
  "object": "users",
  "authentication": { "provider": "jwt", "secret": "..." }
}

// ✅ CORRECT: Protocol defines mechanism only
{
  "object": "users",
  "permissions": { "allowRead": "{{ currentUser.id === record.id }}" }
}

Principle III: Data Sovereignty

• Mandated Local-First architecture (core features requiring cloud are forbidden)
• Required data portability via standard formats (.oos / .json)
• Specified what is prohibited vs. required for offline availability

Principle IV: Stability Pledge (NEW)

• Committed to 2-major-version migration windows for breaking changes
• Defined version policy (patch/minor/major) and deprecation timeline
• Established compatibility testing requirements

Supporting Content

• Practice checklist covering all 4 principles
• Design decision examples (compliant vs. non-compliant)
• Enforcement mechanisms

Screenshots

English:

Chinese:

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Both English and Chinese versions updated in parallel with matching content structure.

Original prompt

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This section details on the original issue you should resolve

<issue_title>编写和优化The ObjectStack Manifesto (ObjectStack 宣言)</issue_title>
<issue_description>ObjectStack 的存在是为了让数据应用开发回归本质。为了保持生态的健康与开放，我们承诺遵循以下不可动摇的核心原则：
第一条：协议中立原则 (Protocol Neutrality)
• ObjectQL 是中立的：它不应该包含任何特定于语言（如 Node.js）、特定于数据库（如 MySQL）或特定于运行时（如 Electron）的逻辑。
• 标准优先：任何功能必须先在 Spec (规范) 层定义，然后才在 Engine (引擎) 层实现。我们拒绝“先实现后标准化”的黑盒操作。
第二条：机制与实现分离 (Mechanism over Policy)
• ObjectQL 只提供机制：它定义 allowRead 接口，但绝不强制规定用户数据必须存在哪里。
• ObjectOS 提供实现：用户系统、文件存储、多租户逻辑属于 OS 层，严禁下沉污染 Protocol 层。
第三条：数据主权原则 (Data Sovereignty)
• Local-First：所有架构设计必须优先考虑“离线可用性”。任何依赖云端连接才能运行的核心功能，都是被禁止的。
• 可移植性：用户的数据（Schema + Data）必须能以标准文件格式（.oos / .json）导出，不锁定在任何特定厂商的云平台上。
第四条：向下兼容承诺 (Stability Pledge)
• 作为底层基础设施，我们承诺 ObjectQL 核心语法的稳定性。对于破坏性变更（Breaking Changes），我们将提供至少 2 个大版本的迁移窗口。</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes 编写和优化The ObjectStack Manifesto (ObjectStack 宣言) #26

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