feat: CLI 对齐 WebUI/SDK 分析能力 — 一键参数寻优+策略列表+组合级WF/一条龙

CLI 此前缺失的三块补齐，引擎层复用现成实现（ParamGridOptimizer/
STRATEGY_PRESETS/evaluate_portfolio/PortfolioWalkForwardEngine），
CLI、Web API 与 Python SDK 三条通路能力对等：

- 新增 easy-tdx optimize 参数网格寻优命令：单策略网格搜索
  （--strategy 用预设网格或 --param 自定义），--all 一键寻优所有
  内置策略并按总收益率全局排名（对齐 WebUI /optimize 页与
  /backtest/optimize-all/run/async）；--workers 进程级并行；
  策略名/参数名联网前前置校验快速失败
- optimizer 新增 optimize_all_strategies 规范实现（模块级 worker
  可 pickle、主进程解析 label、跨策略进程池并行、presets 可注入
  子集网格），CLI 与后续 Web 端共用
- 新增 easy-tdx strategies 内置策略列表命令（名称/参数默认值/
  预设网格/说明；--output json 与 GET /backtest/strategies 同构）
- portfolio 补 --evaluate（组合级一条龙）/ --wf（组合级 WF）/
  --auto-fees，输出与 WebUI /portfolio 页同构
- 测试新增 12 例（optimize 互斥/未知策略/未知参数校验、strategies
  表格与 JSON、portfolio 新旗标、optimize_all_strategies 排名序/
  skipped/JSON 原生类型）；pytest 1611 通过、ruff/mypy 全绿
- 文档同步：README、docs/backtest_usage.md CLI 章节+目录、
  CHANGELOG 未发布小节、examples/20_cli/cli_examples.sh 补
  回测系列 §39-48（输出样例均为真实行情实测）

tests/unit/test_backtest_cli.py

@@ -28,3 +28,116 @@ class TestBacktestCLI:
         result = runner.invoke(backtest, ["SZ", "000001"])
         assert result.exit_code == 1
         assert "必须指定" in result.output or "错误" in result.output
+
+
+class TestStrategiesCLI:
+    """测试内置策略列表命令。"""
+
+    def test_table_output(self):
+        """表格输出应包含注册表策略与预设网格信息。"""
+        from easy_tdx.backtest.cli import strategies
+
+        runner = CliRunner()
+        result = runner.invoke(strategies, [])
+        assert result.exit_code == 0
+        assert "内置策略" in result.output
+        assert "ma_cross" in result.output
+        assert "预设网格" in result.output
+
+    def test_json_output(self):
+        """JSON 输出应为策略 schema 列表（含 preset_grid）。"""
+        import json
+
+        from easy_tdx.backtest.cli import strategies
+
+        runner = CliRunner()
+        result = runner.invoke(strategies, ["--output", "json"])
+        assert result.exit_code == 0
+        data = json.loads(result.output)
+        names = {entry["name"] for entry in data}
+        assert "ma_cross" in names
+        ma_cross = next(e for e in data if e["name"] == "ma_cross")
+        assert ma_cross["preset_grid"]["fast"]
+        assert all("default" in p for p in ma_cross["params"])
+
+
+class TestOptimizeCLI:
+    """测试参数寻优命令（校验逻辑，不联网）。"""
+
+    def test_help(self):
+        """测试 --help 显示帮助。"""
+        from easy_tdx.backtest.cli import optimize
+
+        runner = CliRunner()
+        result = runner.invoke(optimize, ["--help"])
+        assert result.exit_code == 0
+        assert "--strategy" in result.output
+        assert "--all" in result.output
+        assert "--param" in result.output
+
+    def test_strategy_and_all_mutually_exclusive(self):
+        """--all 与 --strategy 同时指定应报错（联网之前快速失败）。"""
+        from easy_tdx.backtest.cli import optimize
+
+        runner = CliRunner()
+        result = runner.invoke(optimize, ["SZ", "000001", "--strategy", "ma_cross", "--all"])
+        assert result.exit_code == 1
+        assert "二选一" in result.output
+
+    def test_missing_mode_fails(self):
+        """--all 与 --strategy 都不指定应报错。"""
+        from easy_tdx.backtest.cli import optimize
+
+        runner = CliRunner()
+        result = runner.invoke(optimize, ["SZ", "000001"])
+        assert result.exit_code == 1
+        assert "二选一" in result.output
+
+    def test_unknown_strategy_fails(self):
+        """未知策略名应报错并列出可选值（联网之前快速失败）。"""
+        from easy_tdx.backtest.cli import optimize
+
+        runner = CliRunner()
+        result = runner.invoke(optimize, ["SZ", "000001", "--strategy", "no_such_strat"])
+        assert result.exit_code == 1
+        assert "未知策略" in result.output
+        assert "ma_cross" in result.output
+
+    def test_unknown_param_fails(self):
+        """--param 传不存在的参数名应报错（避免网格点被静默清空）。"""
+        from easy_tdx.backtest.cli import optimize
+
+        runner = CliRunner()
+        result = runner.invoke(
+            optimize,
+            ["SZ", "000001", "--strategy", "ma_cross", "--param", "no_such=5,10"],
+        )
+        assert result.exit_code == 1
+        assert "未知参数" in result.output
+
+    def test_malformed_param_fails(self):
+        """--param 缺少等号应报错。"""
+        from easy_tdx.backtest.cli import optimize
+
+        runner = CliRunner()
+        result = runner.invoke(
+            optimize,
+            ["SZ", "000001", "--strategy", "ma_cross", "--param", "fast"],
+        )
+        assert result.exit_code == 1
+        assert "错误" in result.output
+
+
+class TestPortfolioCLIFlags:
+    """测试组合回测命令的新增分析旗标。"""
+
+    def test_help_includes_evaluate_and_wf(self):
+        """--help 应列出 --evaluate / --wf / --auto-fees。"""
+        from easy_tdx.backtest.cli import portfolio
+
+        runner = CliRunner()
+        result = runner.invoke(portfolio, ["--help"])
+        assert result.exit_code == 0
+        assert "--evaluate" in result.output
+        assert "--wf" in result.output
+        assert "--auto-fees" in result.output