chore: unify all modules with uv

[imbajin]

Walkthrough

本次更新主要集中在项目的依赖管理、构建配置、文档和开发流程规范化。核心变更包括引入统一的根级 pyproject.toml 和 uv 工具进行依赖管理，移除各子模块依赖中的版本约束，标准化构建系统为 hatchling，并对各 README 文档和 CI 工作流进行了重构和简化。

Changes

文件/路径分组	变更摘要
.gitignore	新增 uv.lock 忽略项及相关注释，新增 .pre-commit-config.yaml 忽略。
README.md, hugegraph-llm/README.md, vermeer-python-client/README.md	重写与重构文档，聚焦模块简介、开发环境搭建流程，移除详细用例与旧示例，更新示例代码和客户端初始化参数。
pyproject.toml	新增根级构建与依赖配置，定义 workspace、可选依赖组、构建系统等。
hugegraph-llm/pyproject.toml, hugegraph-ml/pyproject.toml, hugegraph-python-client/pyproject.toml, vermeer-python-client/pyproject.toml	统一构建系统为 hatchling，移除依赖版本约束，调整元数据与依赖分组，修改本地包引用方式。
.github/workflows/hugegraph-python-client.yml, .github/workflows/pylint.yml	CI 流程改为使用 uv sync 和 uv run 统一环境与命令执行，简化步骤，移除手动虚拟环境激活。
docker/.dockerignore	新增 .dockerignore 文件，定义构建时忽略的文件和目录列表。
docker/Dockerfile.llm	优化 Dockerfile，统一复制源代码，调整虚拟环境路径，使用 uv sync --extra ai 安装依赖，更新环境变量。
docker/Dockerfile.nk	替换 Poetry 为 uv 工具管理环境，统一复制源代码，调整依赖安装流程，保留 Nuitka 编译步骤。

Sequence Diagram(s)

sequenceDiagram
    participant 开发者
    participant 代码仓库
    participant CI
    participant uv工具
    participant hatchling

    开发者->>代码仓库: 提交/拉取代码
    CI->>uv工具: uv sync --extra [模块] --extra dev
    uv工具->>CI: 安装依赖并管理虚拟环境
    CI->>uv工具: uv run pytest / uv run python 脚本
    uv工具->>CI: 在隔离环境中执行命令
    CI->>hatchling: 构建 wheel/sdist
    hatchling->>CI: 生成构建产物

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[Copilot]

Pull Request Overview

This PR unifies dependency management across all modules using uv as the package manager and introduces a workspace-based architecture. The changes standardize the build system to use hatchling, remove version constraints from individual modules (delegating them to root-level constraints), and update documentation and CI workflows to use uv commands.

Key changes include:

• Introduction of root-level pyproject.toml with workspace configuration and centralized dependency constraints
• Migration from setuptools to hatchling build backend across all modules
• Removal of version pins from individual module dependencies, relying on root-level constraints
• Updated CI workflows to use uv sync and uv run commands

Reviewed Changes

Copilot reviewed 17 out of 18 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
pyproject.toml	New root-level workspace configuration with centralized dependency constraints
vermeer-python-client/pyproject.toml	Migrated to hatchling, removed version constraints, updated build configuration
hugegraph-python-client/pyproject.toml	Migrated to hatchling, removed version constraints, simplified dependencies
hugegraph-ml/pyproject.toml	Updated dependencies without version constraints, adjusted Python requirement
hugegraph-llm/pyproject.toml	Removed version constraints, cleaned up dependencies structure
docker/Dockerfile.llm	Updated to use uv instead of manual pip installations
docker/Dockerfile.nk	Replaced poetry with uv for dependency management
.github/workflows/*.yml	Updated CI to use uv sync and uv run commands

Comments suppressed due to low confidence (2)

hugegraph-ml/pyproject.toml:39

• The dependency name has changed from 'category_encoders' to 'category-encoders' (with hyphen). This inconsistency could cause import issues. Should be 'category-encoders' to match the original.

    "category-encoders",