Add fdbox-git package

fdbox-git/README.md

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+# fdbox-git LURE Package
+
+## What is fdbox?
+
+[fdbox](https://github.com/diegoiast/fdbox) is a FreeDOS-like shell and utilities for Linux. It provides a command-line environment that mimics the classic DOS experience, implementing familiar commands like `dir`, `cd`, `type`, `copy`, `del`, and more.
+
+Think of it as a nostalgic bridge for those who grew up with DOS, or an educational tool for understanding how command-line interfaces evolved.
+
+### Features
+
+- FreeDOS-compatible command syntax
+- Built-in commands: `dir`, `cd`, `cls`, `copy`, `del`, `echo`, `exit`, `md`, `rd`, `type`, `ver`, etc.
+- Some Unix utilities: `cal`, `head`, `tail`, `hexdump`
+- Lightweight C implementation
+- Cross-platform (Linux, Windows)
+
+## Building Manually
+
+```bash
+sudo apt install build-essential cmake git
+git clone https://github.com/diegoiast/fdbox.git
+cd fdbox
+mkdir build && cd build
+cmake .. -DCMAKE_BUILD_TYPE=Release
+make
+./fdbox
+```
+
+## Lessons Learned: LURE Packaging Pitfalls
+
+### 1. Debian Version Numbers Must Start with a Digit
+
+**Problem:**
+```
+'Version' field value 'r282.6acbada-1': version number does not start with digit
+```
+
+**Cause:** The `version()` function generated `r282.6acbada` (commit count + short hash), but Debian policy requires version strings to begin with a digit.
+
+**Wrong:**
+```bash
+version() {
+    cd "$srcdir/fdbox"
+    printf "r%s.%s" "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
+}
+```
+
+**Correct:**
+```bash
+version() {
+    cd "$srcdir/fdbox"
+    # Prefix with 0.0.0 to satisfy Debian's digit-first requirement
+    printf "0.0.0.r%s.%s" "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
+}
+```
+
+**Result:** `0.0.0.r282.6acbada` — starts with a digit, Debian-compliant.
+
+### 2. Fallback Installation When No `make install` Target Exists
+
+**Problem:** Many small projects don't define an `install` target in their CMakeLists.txt.
+
+**Solution:** Use `||` to fall back to manual installation:
+```bash
+package() {
+    cd "$srcdir/fdbox/build"
+    make DESTDIR="$pkgdir" install || install -Dm755 fdbox "$pkgdir/usr/bin/fdbox"
+}
+```
+
+This tries `make install` first, and if it fails, manually installs the binary with correct permissions (755) to `/usr/bin/`.
+
+### 3. CMake in `prepare()` vs `build()`
+
+**Why CMake runs in `prepare()`:** The CMake configure step downloads dependencies via CPM (CMake Package Manager) and requires internet access. LURE's `prepare()` phase is designed for tasks requiring network access, while `build()` should work offline.
+
+### 4. Git Source Syntax
+
+For git repositories in LURE, use the `git+` prefix:
+```bash
+sources=("git+https://github.com/diegoiast/fdbox.git")
+checksums=("SKIP")  # Git sources use SKIP for checksum
+```
+
+## Quick Reference: Debian Version Formats
+
+| Format | Valid? | Example |
+|--------|--------|---------|
+| `r123.abc1234` | ❌ No | Starts with letter |
+| `0.0.0.r123.abc1234` | ✅ Yes | Starts with digit |
+| `1.0.0` | ✅ Yes | Standard semver |
+| `2024.01.15` | ✅ Yes | Date-based |
+| `0~git20260109` | ✅ Yes | Pre-release with tilde |
+
+## File Structure
+
+```
+fdbox-git/
+├── lure.sh          # LURE build script
+├── README.md        # This file
+└── *.deb            # Generated package (after build)
+```
+
+## References
+
+- [fdbox GitHub Repository](https://github.com/diegoiast/fdbox)
+- [LURE Documentation](https://lure.sh/)
+- [Debian Policy: Version Format](https://www.debian.org/doc/debian-policy/ch-controlfields.html#version)

fdbox-git/lure.sh

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+name="fdbox-git"
+version="0.0.0"
+release="1"
+desc="FreeDOS-like shell and utilities for Linux"
+homepage="https://github.com/diegoiast/fdbox"
+maintainer="Foad <foad@example.com>"
+architectures=("amd64")
+license=("GPL-3.0-only")
+provides=("fdbox")
+conflicts=("fdbox")
+
+# Build Dependencies
+# - cmake & git: required for build configuration and CPM downloads
+# - python3: detected/used during configuration
+# - build-essential: for gcc/make
+build_deps=("git" "cmake" "build-essential" "python3")
+
+# Runtime Dependencies
+deps=("libc6")
+
+sources=("git+https://github.com/diegoiast/fdbox.git")
+checksums=("SKIP")
+
+version() {
+	cd "$srcdir/fdbox"
+	# Generates a version string like r123.abc1234
+	printf "0.0.0.r%s.%s" "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
+}
+
+prepare() {
+	# 1. Create build directory
+	mkdir -p "$srcdir/fdbox/build"
+	cd "$srcdir/fdbox/build"
+
+	# 2. Run CMake
+	# We run this in prepare() because it downloads dependencies (CPM)
+	# and requires internet access.
+	cmake .. -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Release
+}
+
+build() {
+	cd "$srcdir/fdbox/build"
+	# 3. Compile
+	make
+}
+
+package() {
+	cd "$srcdir/fdbox/build"
+
+	# 4. Install
+	# Try using the standard make install.
+	# The '||' operator ensures that if 'make install' fails (e.g., no target defined),
+	# we fall back to installing the binary manually.
+	make DESTDIR="$pkgdir" install || install -Dm755 fdbox "$pkgdir/usr/bin/fdbox"
+}