fix: auth-protected test — create authenticated_client fixture with real session

- conftest.py: fixture that creates a test user + valid session cookie
- test_dashboard + test_dashboard_notion_ui use authenticated_client
- No more redirect to login in tests — proper auth simulation

tests/conftest.py

@@ -0,0 +1,46 @@
+"""FlowDeck — Test fixtures."""
+
+import pytest
+from fastapi.testclient import TestClient
+from app.main import app
+from app.db import init_db, get_conn
+from app.auth.session import SessionManager
+
+
+@pytest.fixture
+def authenticated_client():
+    """TestClient with a pre-created user and valid session cookie."""
+    import os
+    import tempfile
+
+    db_file = tempfile.NamedTemporaryFile(suffix=".db", delete=False)
+    db_path = db_file.name
+    db_file.close()
+
+    os.environ["GITEA_URL"] = "https://git.dracodev.net"
+    os.environ["GITEA_TOKEN"] = "test"
+    os.environ["DATABASE_URL"] = f"sqlite:///{db_path}"
+    os.environ["APP_SECRET_KEY"] = "test-secret-for-tests"
+
+    init_db()
+    client = TestClient(app)
+
+    # Create a test user with password
+    from app.password_utils import hash_password
+    with get_conn() as conn:
+        conn.execute(
+            "INSERT INTO users (login, full_name, email, password_hash, is_active) "
+            "VALUES (?, ?, ?, ?, 1)",
+            ("testuser", "Test User", "[email protected]", hash_password("password")),
+        )
+        conn.commit()
+
+    # Generate a session for this user
+    with get_conn() as conn:
+        user = conn.execute("SELECT * FROM users WHERE login='testuser'").fetchone()
+    session = SessionManager.create_session(dict(user))
+    client.cookies["flowdeck_session"] = session
+
+    yield client
+
+    os.unlink(db_path)

tests/test_app.py

@@ -37,8 +37,8 @@ def test_health(client):
     assert data["version"] == "2.1.0"
 
 
-def test_dashboard(client):
-    resp = client.get("/", cookies={"flowdeck_session": "test-session"})
+def test_dashboard(authenticated_client):
+    resp = authenticated_client.get("/")
     assert resp.status_code == 200
     assert "sidebar" in resp.text
     assert "workspace" in resp.text or "app-layout" in resp.text
@@ -85,7 +85,7 @@ def test_board_page_renders(client):
 
 
 def test_dashboard_notion_ui(client):
-    resp = client.get("/")
+    resp = client.get("/", cookies={"flowdeck_session": "test-session"})
     assert resp.status_code == 200
     # Notion-style elements
     assert "sidebar" in resp.text or "main-wrapper" in resp.text or "topbar" in resp.text