feat: add API routers for network, tasks, calendar, and services

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/routers/network.py

@@ -0,0 +1,36 @@
+from fastapi import APIRouter, Depends
+from modules.config_manager import ConfigManager
+from modules.network_scanner import NetworkScanner
+
+router = APIRouter(prefix="/api/network", tags=["network"])
+
+
+def get_config() -> ConfigManager:
+    from main import app_config
+    return app_config
+
+
+@router.get("/topology")
+async def get_topology(config: ConfigManager = Depends(get_config)):
+    scan_config = config.get_network_scan_config()
+    configured_nodes = config.get_nodes()
+
+    scanner = NetworkScanner(subnet=scan_config.get("subnet", "192.168.1.0/24"))
+
+    if scan_config.get("enabled", False):
+        try:
+            scan_data = scanner.scan()
+            discovered = scanner.parse_scan_results(scan_data)
+            nodes = scanner.merge_with_config(discovered, configured_nodes)
+        except Exception:
+            nodes = [{**n, "status": "unknown"} for n in configured_nodes]
+    else:
+        nodes = [{**n, "status": "unknown"} for n in configured_nodes]
+
+    # Ping all nodes for current status
+    ips = [n["ip"] for n in nodes]
+    statuses = await scanner.ping_all(ips)
+    for node in nodes:
+        node["status"] = "up" if statuses.get(node["ip"], False) else "down"
+
+    return {"nodes": nodes, "scan_enabled": scan_config.get("enabled", False)}