Initial commit — Stage 0 project foundation

- Cargo workspace with engine, editor, tests crates
- oxide-editor binary stub (builds and runs cleanly)
- install.sh for Linux system installation
- README.md with logo, build and install instructions
- GPLv3 LICENSE
- .gitignore

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

install.sh

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+# install.sh — Build Oxide Engine and install to the system.
+#
+# Installs:
+#   /usr/local/bin/oxide-editor        — editor binary
+#   /usr/local/share/oxide/assets/     — shared assets (icons, shaders, etc.)
+#
+# Usage:
+#   ./install.sh               # installs to /usr/local (may need sudo)
+#   PREFIX=/opt/oxide ./install.sh
+
+set -euo pipefail
+
+PREFIX="${PREFIX:-/usr/local}"
+BIN_DIR="$PREFIX/bin"
+SHARE_DIR="$PREFIX/share/oxide"
+
+# ── Colour helpers ────────────────────────────────────────────────────────────
+GREEN='\033[0;32m'
+CYAN='\033[0;36m'
+RED='\033[0;31m'
+NC='\033[0m'
+
+info()  { echo -e "${CYAN}[oxide]${NC} $*"; }
+ok()    { echo -e "${GREEN}[oxide]${NC} $*"; }
+err()   { echo -e "${RED}[oxide] ERROR:${NC} $*" >&2; exit 1; }
+
+# ── Pre-flight ────────────────────────────────────────────────────────────────
+command -v cargo &>/dev/null || err "cargo not found — install Rust via https://rustup.rs"
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SCRIPT_DIR"
+
+# ── Build ─────────────────────────────────────────────────────────────────────
+info "Building in release mode…"
+cargo build --release --workspace
+
+# ── Install binary ────────────────────────────────────────────────────────────
+info "Installing oxide-editor → $BIN_DIR/oxide-editor"
+install -Dm755 target/release/oxide-editor "$BIN_DIR/oxide-editor"
+
+# ── Install assets ────────────────────────────────────────────────────────────
+if [[ -d assets ]]; then
+    info "Installing assets → $SHARE_DIR/assets/"
+    install -d "$SHARE_DIR/assets"
+    cp -r assets/. "$SHARE_DIR/assets/"
+fi
+
+# ── Done ──────────────────────────────────────────────────────────────────────
+ok "Installation complete."
+echo
+echo "  Run the editor with:  oxide-editor"
+echo "  Uninstall with:       sudo rm $BIN_DIR/oxide-editor && sudo rm -rf $SHARE_DIR"