feat: host session list/terminate and event session actions (0.20.28)

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

backend/tests/test_health.py

@@ -4,6 +4,6 @@ from app.version import APP_NAME, APP_VERSION, APP_VERSION_LABEL
 
 
 def test_version_constants():
-    assert APP_VERSION == "0.20.27"
+    assert APP_VERSION == "0.20.28"
     assert APP_NAME == "Security Alert Center"
-    assert APP_VERSION_LABEL == "Security Alert Center v.0.20.27"
+    assert APP_VERSION_LABEL == "Security Alert Center v.0.20.28"

backend/tests/test_host_sessions.py

@@ -0,0 +1,41 @@
+"""Tests for host session list/parse helpers."""
+
+from app.services.host_sessions import (
+    event_supports_session_terminate,
+    parse_loginctl_sessions,
+    parse_qwinsta_sessions,
+)
+
+
+def test_parse_loginctl_sessions():
+    stdout = "c1 1000 alice seat0 pts/0 active -\n 2 1001 bob - tty2 active -\n"
+    rows = parse_loginctl_sessions(stdout)
+    assert len(rows) == 2
+    assert rows[0].session_id == "c1"
+    assert rows[0].user == "alice"
+    assert rows[0].tty == "pts/0"
+
+
+def test_parse_qwinsta_sessions_filters_user():
+    stdout = """SESSIONNAME       USERNAME                 ID  STATE
+ console           Administrator             1  Active
+ rdp-tcp#0         B26\\alice                 2  Active
+"""
+    all_rows = parse_qwinsta_sessions(stdout)
+    assert len(all_rows) == 2
+    filtered = parse_qwinsta_sessions(stdout, filter_user="alice")
+    assert len(filtered) == 1
+    assert filtered[0].session_id == "2"
+
+
+def test_event_supports_session_terminate_types():
+    class HostStub:
+        os_family = "linux"
+        product = "ssh-monitor"
+
+    class EventStub:
+        def __init__(self, event_type: str):
+            self.type = event_type
+            self.host = HostStub()
+
+    assert event_supports_session_terminate(EventStub("ssh.login.success")) is True