docs & feat: add license & attribution notice (Apache-2.0 / GPL-3.0) and core system enhancements

docs/README_EN.md

@@ -5,7 +5,7 @@
 **Modern, High-Performance Honkai: Star Rail Game Server Emulator in Go**  
 Ported from [`GaC-hkrpg-ps`](https://github.com/CAtlas0784/GaC-hkrpg-rust) with protocol references from `PearlSR` & `Currency-War-SR`.
 
-[English](README_EN.md) | [ภาษาไทย](../README.md)
+[English](README_EN.md) | [ภาษาไทย](../README.md) | [简体中文](README_ZH.md)
 
 </div>
 
@@ -60,7 +60,7 @@ The selected buff applies at the start of the next battle containing an actual C
 
 `resources/ActivityPreviewPolicy.json` selects event-panel prefabs from `PreviewGameplayCatalog.json`. Additional previews are currently withheld: Client logs showed missing reward assets and invalid item lookups in ActiveActivity. Re-enable individual panels only after validating their installed assets, module identity and reward dependencies. Event-specific battles and reward claims remain incomplete.
 
-Featured gacha candidates come from captured character-banner prefab rows. The current capture has two candidates, but the installed Client could not load the Seele prefab and left the UI transition incomplete. Runtime `AssetMgr.Exists` checks confirmed Standard and Beginner assets, but none of the four captured limited assets. `GachaSandboxPolicy.json` currently exposes only the verified Standard panel for browsing; draws return `RET_GACHA_NOT_SUPPORT` until usable featured assets are verified. An empty verified list rejects entry as well. A table row alone is insufficient evidence of an installed asset; verify the Client bundle before adding a path to that list. The grant implementation returns the pictured character and configured duplicate Eidolon material, preserving rank/EX/Traces; it is not yet verified in the Client. An avatar absent from the imported roster is rejected. The sandbox policy uses free draws and does not reproduce official rates or conversion rules.
+Warp advertises only pools captured from this Client whose prefabs were verified in `resources/GachaSandboxPolicy.json`. The Client log reports that handoff ID 2120 is absent from its `GachaBasicInfo` table; the limited pool prefabs checked are also missing. Sending those IDs prevents the page from opening. Imported historical banners are therefore not unlocked, and draws are disabled until pool data, item grants and protocol fields are verified against this Client. The `/unlockall warp` and `/reload banner` commands do not make unverified banners visible.
 
 Runtime table captures and current verification limits are recorded in [docs/offline-gameplay-continuation.md](offline-gameplay-continuation.md). Compiling these handlers does not confirm the corresponding Client screens or gameplay.
 
@@ -173,3 +173,23 @@ Priority Order: **Environment Variables > `server.local.json` > `server.json`**
   - High-performance protocol analysis suite, IL2CPP metadata dumpers, network hook tooling, and reverse-engineering utilities utilized for architectural analysis.
 
 </details>
+
+
+---
+
+## 📜 License & Attribution Notice
+
+This project is made available in accordance with the **Apache License 2.0** and **GNU General Public License v3 (GPL-3.0)** frameworks, strictly enforcing **Attribution** and **State Changes Notices**.
+
+If you use, fork, modify, redistribute, or create derivative works from any part of this repository, you **MUST** strictly comply with the following conditions:
+
+1. **Mandatory Attribution (Credit the Original Source):**
+   - You must provide prominent credit and include a direct link back to this original repository.
+   - You must retain all existing copyright notices, developer credits, and original license headers in all copies or substantial portions of the software.
+
+2. **Explicit State Changes Requirement (Document All Modifications):**
+   - In accordance with Section 4(b) of Apache 2.0 and Section 5(a) of GPL v3, any files that you modify **must carry prominent notices stating clearly that you changed the files, what modifications were made, and the date of modification**.
+   - You must not claim modified versions as wholly original works, nor remove attribution to obscure the software origin.
+
+3. **Non-Commercial Educational Purpose:**
+   - This project is provided strictly for academic research, protocol analysis, and educational purposes. Commercial exploitation, sale, or paywalling of this project or its derivatives is strictly prohibited.