feat(alerts): 添加微信告警、WebSocket实时推送和地图功能

- 新增微信告警服务（wechat_service）和告警任务（alert_tasks）
- 新增 WebSocket 实时推送端点
- 新增监控管理模块（monitor）
- 增强统计仪表板：趋势图、区域分布、光功率历史
- 设备管理：添加坐标信息、标签系统、复合索引优化
- 前端：重构Dashboard/Charts页面，新增业务组件
- 新增5个数据库迁移（坐标、复合索引、标签、光功率历史、显示名）
- 更新部署配置和脚本
- 新增测试框架基础结构

backend/tests/test_ssh_parser.py

@@ -0,0 +1,93 @@
+"""SSH 输出解析测试"""
+import pytest
+from app.services.ssh_service import SSHService
+
+
+def _make_svc():
+    return SSHService("10.0.0.1", "admin", "pass")
+
+
+class TestParseOnuInfo:
+    def test_single_online(self):
+        svc = _make_svc()
+        output = """
+ Flags: S-Switched  L-Loopback  N-Not exist  U-Up    D-Down
+ Port   MAC            Status  OAM State  LOID           Model           Distance
+0/0/1  1484-778f-aa60  Up      OAM_Up     test_loid      H3C_ET704       1234m
+"""
+        onu_dict, unknown = svc.parse_onu_info(output)
+        assert len(onu_dict) == 1
+        assert "1484-778f-aa60" in onu_dict
+        assert onu_dict["1484-778f-aa60"].status == "online"
+
+    def test_mixed_online_offline(self):
+        svc = _make_svc()
+        output = """
+ Flags: S-Switched  L-Loopback  N-Not exist  U-Up    D-Down
+ Port   MAC            Status  OAM State  LOID           Model           Distance
+0/0/1  1484-778f-aa60  Up      OAM_Up     loid_a         H3C_ET704       500m
+0/0/2  1484-778f-bb70  Down    OAM_Down   loid_b         Unknown         <1000m
+"""
+        onu_dict, unknown = svc.parse_onu_info(output)
+        mac_a = "1484-778f-aa60"
+        mac_b = "1484-778f-bb70"
+        assert onu_dict[mac_a].status == "online"
+        assert onu_dict[mac_b].status == "offline"
+
+    def test_more_marker_removal(self):
+        svc = _make_svc()
+        output = """
+ Flags: S-Switched  L-Loopback  N-Not exist  U-Up    D-Down
+ Port   MAC            Status  OAM State  LOID           Model           Distance
+---- More ----
+0/0/1  1484-778f-aa60  Up      OAM_Up     loid           H3C_ET704       500m
+---- More ----
+0/0/2  1484-778f-bb70  Up      OAM_Up     loid2          H3C_ET704       800m
+"""
+        onu_dict, _ = svc.parse_onu_info(output)
+        assert len(onu_dict) == 2
+
+    def test_more_inline_with_device_line(self):
+        """More 标记与下一条设备数据同行时，不应丢弃该行"""
+        svc = _make_svc()
+        output = """
+---- More ----       1484-778f-aa60  Up      OAM_Up     loid           H3C_ET704       500m
+"""
+        onu_dict, _ = svc.parse_onu_info(output)
+        mac = "1484-778f-aa60"
+        assert mac in onu_dict
+
+    def test_empty_output(self):
+        svc = _make_svc()
+        onu_dict, unknown = svc.parse_onu_info("")
+        assert len(onu_dict) == 0
+
+    def test_header_only(self):
+        svc = _make_svc()
+        output = " Flags: S-Switched  L-Loopback  N-Not exist  U-Up    D-Down\n Port   MAC            Status"
+        onu_dict, _ = svc.parse_onu_info(output)
+        assert len(onu_dict) == 0
+
+
+class TestCleanOutput:
+    def test_strips_ansi_codes(self):
+        svc = _make_svc()
+        cleaned = svc._clean_output("\x1b[37D\x1b[K  1484-778f-aa60  Up")
+        assert "\x1b[37D" not in cleaned
+        assert "\x1b[K" not in cleaned
+        assert "1484-778f-aa60" in cleaned
+
+    def test_removes_more_marker(self):
+        svc = _make_svc()
+        output = "---- More ----\n1484-778f-aa60  Up"
+        cleaned = svc._clean_output(output)
+        assert "---- More ----" not in cleaned
+        assert "1484-778f-aa60" in cleaned
+
+    def test_preserves_device_line_after_more(self):
+        """More 标记同行后续设备数据不应被删除"""
+        svc = _make_svc()
+        output = "---- More ----\r\r 1484-778f-aa60  Up"
+        cleaned = svc._clean_output(output)
+        assert "1484-778f-aa60" in cleaned
+        assert "---- More ----" not in cleaned