feat(v3.3): DEB packaging + development plan

packaging/DEBIAN/control

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+Package: vde
+Version: 3.3.0
+Section: libs
+Priority: optional
+Architecture: amd64
+Depends: libc6 (>= 2.35), libstdc++6 (>= 11), libeigen3-dev
+Maintainer: ViewDesignEngine <dev@hdtime.space>
+Description: High-performance C++ CAD geometry engine
+ ViewDesignEngine is a full-stack computational geometry engine
+ covering NURBS curves/surfaces, mesh processing, B-Rep modeling,
+ SDF implicit modeling, differentiable geometry, and industrial
+ format interoperability (STEP, IGES, glTF, STL, 3MF).
+ .
+ Modules: foundation, core, curves, mesh, spatial, boolean,
+ collision, brep, sdf, sketch, capi.

packaging/DEBIAN/postinst

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+#!/bin/sh
+ldconfig

packaging/build-deb.sh

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+#!/bin/bash
+# Build DEB package for ViewDesignEngine
+set -e
+
+VERSION=${1:-3.3.0}
+BUILD_DIR=build-deb
+DEB_DIR=packaging
+
+# Build the project
+cmake -B $BUILD_DIR -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr
+cmake --build $BUILD_DIR -j$(nproc)
+
+# Install to staging area
+rm -rf $DEB_DIR/vde
+cmake --install $BUILD_DIR --prefix $DEB_DIR/vde/usr
+
+# Copy headers
+mkdir -p $DEB_DIR/vde/usr/include
+cp -r include/vde $DEB_DIR/vde/usr/include/
+
+# Copy DEBIAN control files
+cp -r $DEB_DIR/DEBIAN $DEB_DIR/vde/
+
+# Set version
+sed -i "s/Version:.*/Version: $VERSION/" $DEB_DIR/vde/DEBIAN/control
+
+# Build .deb
+dpkg-deb --build $DEB_DIR/vde vde-${VERSION}-amd64.deb
+
+echo "Package built: vde-${VERSION}-amd64.deb"