feat(tapo-agent): add schedule/countdown timer API support

- Fork tapo crate to add missing schedule/timer APIs
- Add get_countdown_rules, get_schedule_rules, get_next_event methods
- New readings: countdown_active, countdown_remain, schedule_count,
  schedule_active_count, next_event_time
- Add local compilation to build script alongside cross-compilation
- Implement offline polling - device collection continues when server disconnects
- Add more device readings: on_time, signal_level, rssi, runtime_today/month, energy_month

Vendored tapo fork in tapo-fork/ with minimal changes to add schedule APIs.

agents/tapo/tapo-fork/tapo-py/examples/tapo_discover_devices.py

@@ -0,0 +1,70 @@
+"""Discover devices on the local network Example"""
+
+import asyncio
+import os
+
+from tapo import ApiClient, DiscoveryResult
+
+
+async def main():
+    tapo_username = os.getenv("TAPO_USERNAME")
+    tapo_password = os.getenv("TAPO_PASSWORD")
+    target = os.getenv("TARGET", "192.168.1.255")
+    timeout_s = int(os.getenv("TIMEOUT", 10))
+
+    print(f"Discovering Tapo devices on target: {target} for {timeout_s} seconds...")
+
+    api_client = ApiClient(tapo_username, tapo_password)
+    discovery = await api_client.discover_devices(target, timeout_s)
+
+    async for discovery_result in discovery:
+        try:
+            device = discovery_result.get()
+
+            match device:
+                case DiscoveryResult.GenericDevice(device_info, _handler):
+                    print(
+                        f"Found Unsupported Device '{device_info.nickname}' of model '{device_info.model}' at IP address '{device_info.ip}'."
+                    )
+                case DiscoveryResult.Light(device_info, _handler):
+                    print(
+                        f"Found '{device_info.nickname}' of model '{device_info.model}' at IP address '{device_info.ip}'."
+                    )
+                case DiscoveryResult.ColorLight(device_info, _handler):
+                    print(
+                        f"Found '{device_info.nickname}' of model '{device_info.model}' at IP address '{device_info.ip}'."
+                    )
+                case DiscoveryResult.RgbLightStrip(device_info, _handler):
+                    print(
+                        f"Found '{device_info.nickname}' of model '{device_info.model}' at IP address '{device_info.ip}'."
+                    )
+                case DiscoveryResult.RgbicLightStrip(device_info, _handler):
+                    print(
+                        f"Found '{device_info.nickname}' of model '{device_info.model}' at IP address '{device_info.ip}'."
+                    )
+                case DiscoveryResult.Plug(device_info, _handler):
+                    print(
+                        f"Found '{device_info.nickname}' of model '{device_info.model}' at IP address '{device_info.ip}'."
+                    )
+                case DiscoveryResult.PlugEnergyMonitoring(device_info, _handler):
+                    print(
+                        f"Found '{device_info.nickname}' of model '{device_info.model}' at IP address '{device_info.ip}'."
+                    )
+                case DiscoveryResult.PowerStrip(device_info, _handler):
+                    print(
+                        f"Found Power Strip of model '{device_info.model}' at IP address '{device_info.ip}'."
+                    )
+                case DiscoveryResult.PowerStripEnergyMonitoring(device_info, _handler):
+                    print(
+                        f"Found Power Strip with Energy Monitoring of model '{device_info.model}' at IP address '{device_info.ip}'."
+                    )
+                case DiscoveryResult.Hub(device_info, _handler):
+                    print(
+                        f"Found '{device_info.nickname}' of model '{device_info.model}' at IP address '{device_info.ip}'."
+                    )
+        except Exception as e:
+            print(f"Error discovering device: {e}")
+
+
+if __name__ == "__main__":
+    asyncio.run(main())