feat: Add Playbook Manager, Saved Searches, and Timeline View components

- Implemented PlaybookManager for creating and managing investigation playbooks with templates.
- Added SavedSearches component for managing bookmarked queries and recurring scans.
- Introduced TimelineView for visualizing forensic event timelines with zoomable charts.
- Enhanced backend processing with auto-queued jobs for dataset uploads and improved database concurrency.
- Updated frontend components for better user experience and performance optimizations.
- Documented changes in update log for future reference.

backend/tests/test_network.py

@@ -0,0 +1,84 @@
+"""Tests for network inventory endpoints and cache/polling behavior."""
+
+import io
+
+import pytest
+
+from app.services.host_inventory import inventory_cache
+from tests.conftest import SAMPLE_CSV
+
+
+@pytest.mark.asyncio
+async def test_inventory_status_none_for_unknown_hunt(client):
+    hunt_id = "hunt-does-not-exist"
+    inventory_cache.invalidate(hunt_id)
+    inventory_cache.clear_building(hunt_id)
+
+    res = await client.get(f"/api/network/inventory-status?hunt_id={hunt_id}")
+    assert res.status_code == 200
+    body = res.json()
+    assert body["hunt_id"] == hunt_id
+    assert body["status"] == "none"
+
+
+@pytest.mark.asyncio
+async def test_host_inventory_cold_cache_returns_202(client):
+    # Create hunt and upload dataset linked to that hunt
+    hunt = await client.post("/api/hunts", json={"name": "Net Hunt"})
+    hunt_id = hunt.json()["id"]
+
+    files = {"file": ("network.csv", io.BytesIO(SAMPLE_CSV), "text/csv")}
+    up = await client.post("/api/datasets/upload", files=files, params={"hunt_id": hunt_id})
+    assert up.status_code == 200
+
+    # Ensure cache is cold for this hunt
+    inventory_cache.invalidate(hunt_id)
+    inventory_cache.clear_building(hunt_id)
+
+    res = await client.get(f"/api/network/host-inventory?hunt_id={hunt_id}")
+    assert res.status_code == 202
+    body = res.json()
+    assert body["status"] == "building"
+
+
+@pytest.mark.asyncio
+async def test_host_inventory_ready_cache_returns_200(client):
+    hunt = await client.post("/api/hunts", json={"name": "Ready Hunt"})
+    hunt_id = hunt.json()["id"]
+
+    mock_inventory = {
+        "hosts": [
+            {
+                "id": "host-1",
+                "hostname": "HOST-1",
+                "fqdn": "HOST-1.local",
+                "client_id": "C.1234abcd",
+                "ips": ["10.0.0.10"],
+                "os": "Windows 10",
+                "users": ["alice"],
+                "datasets": ["test"],
+                "row_count": 5,
+            }
+        ],
+        "connections": [],
+        "stats": {
+            "total_hosts": 1,
+            "hosts_with_ips": 1,
+            "hosts_with_users": 1,
+            "total_datasets_scanned": 1,
+            "total_rows_scanned": 5,
+        },
+    }
+
+    inventory_cache.put(hunt_id, mock_inventory)
+
+    res = await client.get(f"/api/network/host-inventory?hunt_id={hunt_id}")
+    assert res.status_code == 200
+    body = res.json()
+    assert body["stats"]["total_hosts"] == 1
+    assert len(body["hosts"]) == 1
+    assert body["hosts"][0]["hostname"] == "HOST-1"
+
+    status_res = await client.get(f"/api/network/inventory-status?hunt_id={hunt_id}")
+    assert status_res.status_code == 200
+    assert status_res.json()["status"] == "ready"