chore(interviews): add deps and pytest scaffold for interview subsystem

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

backend/pyproject.toml

@@ -32,6 +32,11 @@ dependencies = [
     # 工具库
     "python-dotenv>=1.0.0",
     "pydantic>=2.0.0",
+    "PyYAML>=6.0",
+    "scikit-learn>=1.4",
+    "scipy>=1.12",
+    "numpy>=1.26",
+    "pandas>=2.1",
 ]
 
 [project.optional-dependencies]

backend/pytest.ini

@@ -0,0 +1,8 @@
+[pytest]
+testpaths = tests
+python_files = test_*.py
+python_classes = Test*
+python_functions = test_*
+addopts = -ra --strict-markers
+markers =
+    integration: marks integration tests (deselect with -m 'not integration')

backend/tests/conftest.py

@@ -0,0 +1,17 @@
+import os
+import sys
+import pathlib
+import pytest
+
+ROOT = pathlib.Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT))
+
+os.environ.setdefault("LLM_API_KEY", "test")
+os.environ.setdefault("LLM_BASE_URL", "https://example.invalid")
+os.environ.setdefault("LLM_MODEL_NAME", "test-model")
+os.environ.setdefault("ZEP_API_KEY", "test")
+
+@pytest.fixture
+def tmp_uploads(tmp_path, monkeypatch):
+    monkeypatch.setenv("UPLOADS_DIR", str(tmp_path))
+    return tmp_path

backend/uv.lock

@@ -1248,10 +1248,15 @@ dependencies = [
     { name = "charset-normalizer" },
     { name = "flask" },
     { name = "flask-cors" },
+    { name = "numpy" },
     { name = "openai" },
+    { name = "pandas" },
     { name = "pydantic" },
     { name = "pymupdf" },
     { name = "python-dotenv" },
+    { name = "pyyaml" },
+    { name = "scikit-learn" },
+    { name = "scipy" },
     { name = "zep-cloud" },
 ]
 
@@ -1276,13 +1281,18 @@ requires-dist = [
     { name = "charset-normalizer", specifier = ">=3.0.0" },
     { name = "flask", specifier = ">=3.0.0" },
     { name = "flask-cors", specifier = ">=6.0.0" },
+    { name = "numpy", specifier = ">=1.26" },
     { name = "openai", specifier = ">=1.0.0" },
+    { name = "pandas", specifier = ">=2.1" },
     { name = "pipreqs", marker = "extra == 'dev'", specifier = ">=0.5.0" },
     { name = "pydantic", specifier = ">=2.0.0" },
     { name = "pymupdf", specifier = ">=1.24.0" },
     { name = "pytest", marker = "extra == 'dev'", specifier = ">=8.0.0" },
     { name = "pytest-asyncio", marker = "extra == 'dev'", specifier = ">=0.23.0" },
     { name = "python-dotenv", specifier = ">=1.0.0" },
+    { name = "pyyaml", specifier = ">=6.0" },
+    { name = "scikit-learn", specifier = ">=1.4" },
+    { name = "scipy", specifier = ">=1.12" },
     { name = "zep-cloud", specifier = "==3.13.0" },
 ]
 provides-extras = ["dev"]