重组为 backend/clients/docs 三层结构，并清理 git 污染。

将后端迁入 backend/，完善根目录 .gitignore，删除误提交的 .mypy_cache 缓存文件。

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/tests/test_voice_terminal_binding.py

@@ -0,0 +1,131 @@
+"""术间绑定与站点配置（OR_SITE_CONFIG_JSON）解析。"""
+
+from __future__ import annotations
+
+from pathlib import Path
+
+import pytest
+
+from app.config import Settings
+from app.or_site_config import (
+    load_or_site_config_from_path,
+    merge_video_rtsp_urls_into_file,
+    parse_or_site_config_object,
+)
+from app.services.voice_terminal_binding import VoiceTerminalBindingIndex
+
+
+def test_parse_and_resolve() -> None:
+    idx = VoiceTerminalBindingIndex.from_binding_list(
+        [
+            {
+                "or_room_id": "OR-05",
+                "camera_ids": ["or-cam-01", "or-cam-02"],
+                "voice_terminal_id": "T-05",
+            }
+        ]
+    )
+    assert idx is not None
+    assert idx.resolve_terminal(["or-cam-02", "or-cam-01"]) == "T-05"
+    assert idx.resolve_terminal(["or-cam-01"]) == "T-05"
+
+
+def test_resolve_subset_uses_smallest_superset_when_ambiguous() -> None:
+    idx = VoiceTerminalBindingIndex.from_binding_list(
+        [
+            {
+                "or_room_id": "A",
+                "camera_ids": ["c1", "c2"],
+                "voice_terminal_id": "T-AB",
+            },
+            {
+                "or_room_id": "B",
+                "camera_ids": ["c1", "c2", "c3"],
+                "voice_terminal_id": "T-ABC",
+            },
+        ]
+    )
+    assert idx is not None
+    assert idx.resolve_terminal(["c1"]) == "T-AB"
+
+
+def test_duplicate_terminal_rejected() -> None:
+    assert (
+        VoiceTerminalBindingIndex.from_binding_list(
+            [
+                {"or_room_id": "A", "camera_ids": ["c1"], "voice_terminal_id": "T"},
+                {"or_room_id": "B", "camera_ids": ["c2"], "voice_terminal_id": "T"},
+            ]
+        )
+        is None
+    )
+
+
+def test_duplicate_camera_set_rejected() -> None:
+    assert (
+        VoiceTerminalBindingIndex.from_binding_list(
+            [
+                {"or_room_id": "A", "camera_ids": ["c1"], "voice_terminal_id": "T1"},
+                {"or_room_id": "B", "camera_ids": ["c1"], "voice_terminal_id": "T2"},
+            ]
+        )
+        is None
+    )
+
+
+def test_from_binding_list_empty() -> None:
+    idx = VoiceTerminalBindingIndex.from_binding_list([])
+    assert idx is not None
+    assert idx.resolve_terminal(["x"]) is None
+
+
+def test_parse_site_config_rejects_unknown_keys() -> None:
+    with pytest.raises(ValueError, match="unknown top-level"):
+        parse_or_site_config_object(
+            {
+                "video_rtsp_urls": {},
+                "voice_or_room_bindings": [],
+                "extra": 1,
+            }
+        )
+
+
+def test_parse_site_config_requires_both_sections() -> None:
+    with pytest.raises(ValueError, match="must include"):
+        parse_or_site_config_object({"video_rtsp_urls": {}})
+
+
+def test_load_from_path_roundtrip(tmp_path: Path) -> None:
+    p = tmp_path / "site.json"
+    p.write_text(
+        '{"video_rtsp_urls":{"c1":"rtsp://h"},"voice_or_room_bindings":['
+        '{"or_room_id":"R","camera_ids":["a"],"voice_terminal_id":"T"}]}',
+        encoding="utf-8",
+    )
+    cfg = load_or_site_config_from_path(p)
+    assert cfg.video_rtsp_urls == {"c1": "rtsp://h"}
+    assert cfg.voice_bindings.resolve_terminal(["a"]) == "T"
+
+
+def test_settings_video_map(tmp_path: Path) -> None:
+    p = tmp_path / "site.json"
+    p.write_text(
+        '{"video_rtsp_urls":{"c1":"rtsp://x"},"voice_or_room_bindings":[]}',
+        encoding="utf-8",
+    )
+    s = Settings(or_site_config_json_file=str(p))
+    assert s.video_rtsp_url_map() == {"c1": "rtsp://x"}
+
+
+def test_merge_preserves_bindings(tmp_path: Path) -> None:
+    p = tmp_path / "site.json"
+    p.write_text(
+        '{"video_rtsp_urls":{"old":"rtsp://old"},'
+        '"voice_or_room_bindings":[{"or_room_id":"R","camera_ids":["x"],'
+        '"voice_terminal_id":"T"}]}',
+        encoding="utf-8",
+    )
+    merge_video_rtsp_urls_into_file(p, {"x": "rtsp://127.0.0.1:1/p"}, replace_host="127.0.0.1")
+    cfg = load_or_site_config_from_path(p)
+    assert cfg.video_rtsp_urls == {"x": "rtsp://127.0.0.1:1/p"}
+    assert cfg.voice_bindings.resolve_terminal(["x"]) == "T"