add proudnet to third-party libs

third-party/README.md

@@ -44,6 +44,32 @@ Notes:
 | `ApexProxy.dll`, `ApexProxyMain.dll` | no VERSIONINFO | Proprietary (Apex anti-cheat); no public SDK. |
 | `XLSLogin.dll` | no VERSIONINFO | Unknown origin; no public source identified. |
 
+## Statically linked: ProudNet (Nettention) — local-only headers
+
+ProudNet is not a separate DLL; it is linked into the server EXEs.
+
+- **Identity (observed):** in `Agent_Release_x64.exe`, RTTI and assert
+  strings name `Proud::CNetServerImpl`, `Proud::CNetClientImpl`, RMI stubs
+  and proxies, and `GET /PNReport/ReportError.php`. There is no version string
+  in the binary. VS2010 build, so likely an early-2010s ProudNet (inference).
+  Other EXEs not yet checked.
+- **Public material:** `github.com/Nettention/ProudNet` contains prebuilt libs
+  and headers only. There is no public implementation source.
+- **Licence:** proprietary EULA. It forbids redistribution and
+  reverse-engineering (§1.2b), treats the software as confidential (§3), and
+  is governed by Korean law (§7–8). **Do not commit any ProudNet files.**
+- **Local copy (gitignored):** `_local/proudnet-1.8.00001/`. It holds
+  `ProudNet/include/` (187 headers) plus `ProudNet-License-En.txt`, from tag
+  `ProudNetLibSetup-1.8.00001` (commit `c70f23f9…`, May 2023). Fetched at the
+  user's direction for local naming reference only.
+- **Match:** not version-matched; 1.8 is about a decade newer than the build.
+  Only 18 of 63 `Proud::` RTTI classes in the Agent appear in these headers;
+  the rest are internal `*Impl` types. Verify any struct layout against the
+  decompiled code before relying on it.
+- To re-fetch:
+  `git archive ProudNetLibSetup-1.8.00001 ProudNet/include ProudNet-License-En.txt`
+  from that repo into `_local/proudnet-1.8.00001/`.
+
 Vendor attributions for XTrap (WiseLogic) and Apex are inferred from DLL
 names, not corroborated by decompilation.