docs: add PR verification workflow to CONTRIBUTING.md

Document make pr-test-neo and make pr-test-full commands for local
CI-equivalent verification before submitting PRs.

CONTRIBUTING.md

@@ -46,6 +46,32 @@ ruff check .
 
 如果您使用 VSCode，可以安装 `Ruff` 插件。
 
+##### PR 功能完整性验证（推荐）
+
+如果您希望在本地做一套接近 CI 的完整验证，可使用：
+
+```bash
+make pr-test-neo
+```
+
+该命令会执行：
+- `uv sync --group dev`
+- `ruff format --check .` 与 `ruff check .`
+- Neo 相关关键测试
+- `main.py` 启动 smoke test（检测 `http://localhost:6185`）
+
+需要全量验证时可使用：
+
+```bash
+make pr-test-full
+```
+
+如果只想快速重复执行（跳过依赖同步和 dashboard 构建）：
+
+```bash
+make pr-test-full-fast
+```
+
 
 ## Contributing Guide
 
@@ -88,3 +114,29 @@ We use Ruff as our code formatter and static analysis tool. Before submitting yo
 ruff format .
 ruff check .
 ```
+
+##### PR completeness checks (recommended)
+
+To run a local validation flow close to CI, use:
+
+```bash
+make pr-test-neo
+```
+
+This command runs:
+- `uv sync --group dev`
+- `ruff format --check .` and `ruff check .`
+- Neo-related critical tests
+- a startup smoke test against `http://localhost:6185`
+
+For full validation, use:
+
+```bash
+make pr-test-full
+```
+
+For faster repeated runs (skip dependency sync and dashboard build), use:
+
+```bash
+make pr-test-full-fast
+```