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_l930.py

@@ -0,0 +1,103 @@
+"""L920 and L930 Example"""
+
+import asyncio
+import os
+
+from tapo import ApiClient
+from tapo.requests import Color, LightingEffect, LightingEffectPreset, LightingEffectType
+
+
+async def main():
+    tapo_username = os.getenv("TAPO_USERNAME")
+    tapo_password = os.getenv("TAPO_PASSWORD")
+    ip_address = os.getenv("IP_ADDRESS")
+
+    client = ApiClient(tapo_username, tapo_password)
+    device = await client.l930(ip_address)
+
+    print("Turning device on...")
+    await device.on()
+
+    print("Waiting 2 seconds...")
+    await asyncio.sleep(2)
+
+    print("Setting the brightness to 30%...")
+    await device.set_brightness(30)
+
+    print("Setting the color to `Chocolate`...")
+    await device.set_color(Color.Chocolate)
+
+    print("Waiting 2 seconds...")
+    await asyncio.sleep(2)
+
+    print("Setting the color to `Deep Sky Blue` using the `hue` and `saturation`...")
+    await device.set_hue_saturation(195, 100)
+
+    print("Waiting 2 seconds...")
+    await asyncio.sleep(2)
+
+    print("Setting the color to `Incandescent` using the `color temperature`...")
+    await device.set_color_temperature(2700)
+
+    print("Waiting 2 seconds...")
+    await asyncio.sleep(2)
+
+    print("Using the `set` API to set multiple properties in a single request...")
+    await device.set().brightness(50).color(Color.HotPink).send(device)
+
+    print("Waiting 2 seconds...")
+    await asyncio.sleep(2)
+
+    print("Setting a preset Lighting effect...")
+    await device.set_lighting_effect(LightingEffectPreset.BubblingCauldron)
+
+    print("Waiting 10 seconds...")
+    await asyncio.sleep(10)
+
+    print("Setting a custom static Lighting effect...")
+    custom_effect = (
+        LightingEffect(
+            "My Custom Static Effect", LightingEffectType.Static, True, True, 100, [(359, 85, 100)]
+        )
+        .with_expansion_strategy(1)
+        .with_segments([0, 1, 2])
+        .with_sequence([(359, 85, 100), (0, 0, 100), (236, 72, 100)])
+    )
+    await device.set_lighting_effect(custom_effect)
+
+    print("Waiting 10 seconds...")
+    await asyncio.sleep(10)
+
+    print("Setting a custom sequence Lighting effect...")
+    custom_effect = (
+        LightingEffect(
+            "My Custom Sequence Effect",
+            LightingEffectType.Sequence,
+            True,
+            True,
+            100,
+            [(359, 85, 100)],
+        )
+        .with_expansion_strategy(1)
+        .with_segments([0, 1, 2])
+        .with_sequence([(359, 85, 100), (0, 0, 100), (236, 72, 100)])
+        .with_direction(1)
+        .with_duration(50)
+    )
+    await device.set_lighting_effect(custom_effect)
+
+    print("Waiting 10 seconds...")
+    await asyncio.sleep(10)
+
+    print("Turning device off...")
+    await device.off()
+
+    device_info = await device.get_device_info()
+    print(f"Device info: {device_info.to_dict()}")
+
+    device_usage = await device.get_device_usage()
+    print(f"Device usage: {device_usage.to_dict()}")
+
+
+if __name__ == "__main__":
+    asyncio.run(main())