docs(structure): 更新项目目录结构说明

- 新增 runtime、commands、kscli、e2e 和 bailian-kb-dsh 包说明
- 扩展 core 包功能描述，包含配置、错误等内容
- 明确 cli 包为完整产品入口
- 添加 skills 目录及对应功能说明
- 调整目录顺序，增强文档清晰度和完整性

Author: clark-fc

CONTRIBUTING.md

@@ -16,11 +16,17 @@ Developer guide for `bailian-cli` — the official CLI for Aliyun Model Studio (
 ```
 bailian-cli/
 ├── packages/
-│   ├── cli/              # `bailian-cli` — CLI entry, commands, UI
-│   └── core/             # `bailian-cli-core` — auth, HTTP, types
-├── docs/agents/          # Scenario-based maintenance guides
-├── tools/                # Release automation & reference generation
-├── AGENTS.md             # Contract for AI agents
+│   ├── core/           # `bailian-cli-core` — auth, config, HTTP client, errors, types
+│   ├── runtime/        # `bailian-cli-runtime` — CLI framework: parsing, help, middleware, output
+│   ├── commands/       # `bailian-cli-commands` — reusable command implementations
+│   ├── cli/            # `bailian-cli` — the full `bl` product entry
+│   ├── kscli/          # `knowledge-studio-cli` — `kscli` entry, reuses commands/
+│   ├── e2e/            # Shared e2e harness utilities (private)
+│   └── bailian-kb-dsh/ # `bailian-kb-dsh` — DeepSeek Harness plugin (independent version & release)
+├── skills/             # Agent skills installed by `bl skill init`
+├── docs/agents/        # Scenario-based maintenance guides
+├── tools/              # Release automation & reference generation
+├── AGENTS.md           # Contract for AI agents
 └── README.md
 ```
 

CONTRIBUTING.zh.md

@@ -16,11 +16,17 @@
 ```
 bailian-cli/
 ├── packages/
-│   ├── cli/              # `bailian-cli` —— CLI 入口、命令、UI
-│   └── core/             # `bailian-cli-core` —— 鉴权、HTTP、类型
-├── docs/agents/          # 场景化维护文档
-├── tools/                # 发版自动化与命令手册生成
-├── AGENTS.md             # AI agent 维护契约
+│   ├── core/           # `bailian-cli-core` —— 鉴权、配置、HTTP client、错误、类型
+│   ├── runtime/        # `bailian-cli-runtime` —— CLI 运行时:参数解析、help、middleware、输出
+│   ├── commands/       # `bailian-cli-commands` —— 可复用命令实现库
+│   ├── cli/            # `bailian-cli` —— 完整 `bl` 产品入口
+│   ├── kscli/          # `knowledge-studio-cli` —— `kscli` 入口,复用 commands/
+│   ├── e2e/            # e2e 共享工具(不发布)
+│   └── bailian-kb-dsh/ # `bailian-kb-dsh` —— DeepSeek Harness 插件(版本与发布独立)
+├── skills/             # `bl skill init` 安装的 Agent skill
+├── docs/agents/        # 场景化维护文档
+├── tools/              # 发版自动化与命令手册生成
+├── AGENTS.md           # AI agent 维护契约
 └── README.md
 ```