chore(test): add comprehensive test coverage infrastructure with coverage reporting tools

This commit introduces a complete test coverage infrastructure including coverage reporting tools, configuration files, and enhanced Makefile targets for comprehensive test coverage analysis.

The changes include:
- Adding `scripts/check_coverage.py` to handle coverage analysis and threshold checking
- Creating `coverage.json` to store coverage data
- Adding `coverage.yaml` for coverage configuration with line and branch coverage thresholds
- Enhancing Makefile with comprehensive coverage targets (test, test-unit, test-e2e, coverage, coverage-full, coverage-check, etc.)

//

此提交引入了一个完整的测试覆盖基础设施，包括覆盖报告工具、配置文件和增强的 Makefile 目标，用于全面的测试覆盖分析。

更改包括：
- 添加 `scripts/check_coverage.py` 来处理覆盖分析和阈值检查
- 创建 `coverage.json` 来存储覆盖数据
- 添加 `coverage.yaml` 用于覆盖配置，包含行和分支覆盖阈值
- 增强 Makefile，添加全面的覆盖目标（test、test-unit、test-e2e、coverage、coverage-full、coverage-check 等）

Change-Id: I6561fa6c9f1cc37578fc246b5a2f05fe33463f07
Signed-off-by: OhYee <[email protected]>

Author: OhYee

Makefile

@@ -122,3 +122,63 @@ install-deps:
 		--dev \
 		--all-extras \
 		-i https://mirrors.tuna.tsinghua.edu.cn/pypi/web/simple
+
+# ============================================================================
+# 测试和覆盖率
+# ============================================================================
+
+.PHONY: test
+test: ## 运行所有测试
+	@uv run pytest tests/
+
+.PHONY: test-unit
+test-unit: ## 运行单元测试
+	@uv run pytest tests/unittests/
+
+.PHONY: test-e2e
+test-e2e: ## 运行端到端测试
+	@uv run pytest tests/e2e/
+
+.PHONY: coverage
+coverage: ## 运行测试并显示覆盖率报告（全量代码 + 增量代码）
+	@echo "📊 运行覆盖率测试..."
+	@uv run python scripts/check_coverage.py --incremental --no-check
+
+.PHONY: coverage-full
+coverage-full: ## 运行测试并显示全量覆盖率报告
+	@echo "📊 运行全量覆盖率测试..."
+	@uv run python scripts/check_coverage.py --no-check
+
+.PHONY: coverage-check
+coverage-check: ## 运行测试并检查覆盖率是否达标（根据 coverage.yaml 配置）
+	@echo "🔍 运行覆盖率检查..."
+	@uv run python scripts/check_coverage.py --incremental
+
+.PHONY: coverage-check-full
+coverage-check-full: ## 运行测试并检查全量覆盖率是否达标
+	@echo "🔍 运行全量覆盖率检查..."
+	@uv run python scripts/check_coverage.py
+
+.PHONY: coverage-dir
+coverage-dir: ## 检查特定目录的覆盖率 (使用 DIR=agentrun/server)
+	@if [ -z "$(DIR)" ]; then \
+		echo "Usage: make coverage-dir DIR=agentrun/server"; \
+		exit 1; \
+	fi
+	@echo "📊 检查目录 $(DIR) 的覆盖率..."
+	@uv run python scripts/check_coverage.py --source $(DIR) --check-directories $(DIR)
+
+.PHONY: coverage-server
+coverage-server: ## 检查 server 模块的覆盖率
+	@echo "📊 检查 server 模块覆盖率..."
+	@uv run pytest tests/unittests/server/ --cov=agentrun/server --cov-report=term-missing --cov-branch
+
+.PHONY: coverage-json
+coverage-json: ## 输出 JSON 格式的覆盖率报告
+	@uv run python scripts/check_coverage.py --json-only --no-check
+
+.PHONY: coverage-html
+coverage-html: ## 生成 HTML 覆盖率报告
+	@echo "📊 生成 HTML 覆盖率报告..."
+	@uv run pytest tests/ --cov=agentrun --cov-report=html --cov-branch
+	@echo "✅ HTML 报告已生成到 htmlcov/ 目录"