layout: restructure into src/ tests/ android/ scripts/ tools/

- extension/src/{port,platform,codepage} -> src/; native_render -> src/host
  (+ dxt, shaders/); libgr2 -> src/gr2; extension/third_party -> third_party
- extension/tests -> tests/port, libgr2/tests -> tests/gr2
- android-native -> android (build.sh, push-client.sh moved in)
- script -> scripts; tools/40250 -> tools/server; oracle -> tools/granny-oracle;
  perf tools -> tools/perf
- all build trees under build/ (native, release, android, port-gate)
- xrender:: CMake aliases -> mt::; port-map ledger impl paths rewritten

No code changes. ctest 15/15, port_gate macos+android PASS, port_map check 0 errors.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/port/EterLib/DibBar.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include "GrpDIB.h"
+
+class CBlockTexture;
+
+class CDibBar
+{
+	public:
+		CDibBar();
+		virtual ~CDibBar();
+
+		bool Create(HDC hdc, DWORD dwWidth, DWORD dwHeight);
+		void Invalidate();
+		void SetClipRect(const RECT & c_rRect);
+		void ClearBar();
+		void Render(int ix, int iy);
+
+	protected:
+		DWORD __NearTextureSize(DWORD dwSize);
+		void __DivideTextureSize(DWORD dwSize, DWORD dwMax, DWORD * pdwxStep, DWORD * pdwxCount, DWORD * pdwxRest);
+		CBlockTexture * __BuildTextureBlock(DWORD dwxPos, DWORD dwyPos, DWORD dwImageWidth, DWORD dwImageHeight, DWORD dwTextureWidth, DWORD dwTextureHeight);
+		void __BuildTextureBlockList(DWORD dwWidth, DWORD dwHeight, DWORD dwMax=256);
+
+		virtual void OnCreate(){}
+
+	protected:
+		CGraphicDib m_dib;
+		std::vector<CBlockTexture *> m_kVec_pkBlockTexture;
+
+		DWORD m_dwWidth;
+		DWORD m_dwHeight;
+};