Add TapADN IAA debug sample

Samples~/IAAAdDebugSample/README.md

@@ -1,5 +1,47 @@
 # TapADN IAA Ad Debug Sample
 
-This optional sample is intentionally lightweight. Import it in a host project, create an `ADConfig`, and initialize with `TapadnCommercialization.InitADManager(...)` to validate rewarded, interstitial, and splash slots.
+## Files
 
-The main package does not import debug scenes or editor panels by default.
+- Scene:
+  - `Assets/Samples/IAAAdDebugSample/Scenes/IAAAdDebugSample.unity`
+- Config:
+  - `Assets/Samples/IAAAdDebugSample/Configs/IAAAdDebugSampleConfig.asset`
+- Runtime GUI:
+  - `Assets/Samples/IAAAdDebugSample/Runtime/TapadnIAAAdDebugSampleGui.cs`
+
+## Setup
+
+1. Import this sample from Package Manager.
+2. Open `IAAAdDebugSampleConfig.asset`.
+3. Fill these fields:
+   - `Id` = TapADN / Dirichlet MediaId.
+   - `Key` = MediaKey.
+   - `Key2` = MediaName.
+   - `BaseAwardAdKeyValue.value` = rewarded SpaceId.
+   - `BaseInteractionAdKeyValue.value` = interstitial SpaceId.
+   - `BaseSplashAdKeyValue.value` = splash SpaceId.
+4. Open `IAAAdDebugSample.unity`.
+5. Build and run on Android device.
+
+## Debug Panel
+
+The scene uses an IMGUI panel and supports:
+
+- Initialize `ADManager`.
+- Enter rewarded/interstitial/splash scenarios.
+- Load rewarded/interstitial/splash.
+- Async play rewarded/interstitial/splash.
+- View ready state and TapADN init status.
+- Copy logs to clipboard.
+- Export logs to `Application.persistentDataPath/TapadnIAAAdDebugLogs`.
+
+## Default Strategy
+
+- `tapadn.debug=true`
+- `tapadn.channel=unity_sample`
+- Rewarded/interstitial/splash all use auto-ad mode by default.
+- Prewarm is off by default to keep the first test action explicit.
+
+## Notes
+
+This sample is optional and lives under `Samples~`, so it is not imported into game projects unless explicitly selected.