add:build+readme

README.md

@@ -0,0 +1,14 @@
+# Tailscale VPN
+
+## Setup
+
+```
+./build.sh
+```
+
+## Run
+
+```
+tailscale-vpn
+```
+

build.sh

@@ -0,0 +1,74 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+BINARY_NAME="tailscale-vpn"
+BIN_DIR="$HOME/.local/bin"
+BASHRC="$HOME/.bashrc"
+DIST_DIR="$(pwd)/dist"
+BUILD_OUTPUT="$DIST_DIR/$BINARY_NAME"
+INSTALL_TARGET="$BIN_DIR/$BINARY_NAME"
+
+# ── Colours ────────────────────────────────────────────────────────────────────
+BOLD='\033[1m'
+DIM='\033[2m'
+GREEN='\033[0;32m'
+YELLOW='\033[0;33m'
+CYAN='\033[0;36m'
+RESET='\033[0m'
+
+step()    { echo -e "\n${BOLD}${CYAN}▶  $1${RESET}"; }
+ok()      { echo -e "   ${GREEN}✔${RESET}  $1"; }
+skip()    { echo -e "   ${DIM}–  $1${RESET}"; }
+warn()    { echo -e "   ${YELLOW}⚠  $1${RESET}"; }
+divider() { echo -e "${DIM}   ──────────────────────────────────────${RESET}"; }
+
+# ── Header ─────────────────────────────────────────────────────────────────────
+echo -e "\n${BOLD}  ${BINARY_NAME} — build${RESET}"
+divider
+
+# ── 1. Build Go binary ─────────────────────────────────────────────────────────
+step "Building Go binary"
+
+mkdir -p "$DIST_DIR"
+go build -o "$BUILD_OUTPUT"
+
+ok "Build complete → dist/$BINARY_NAME"
+
+# ── 2. Ensure ~/.local/bin exists ──────────────────────────────────────────────
+step "Checking $BIN_DIR"
+mkdir -p "$BIN_DIR"
+ok "$BIN_DIR exists"
+
+# ── 3. Add ~/.local/bin to PATH in ~/.bashrc if not already present ────────────
+step "Checking PATH in $BASHRC"
+PATH_EXPORT='export PATH="$HOME/.local/bin:$PATH"'
+PATH_MARKER="# $BINARY_NAME: bin_dir"
+
+touch "$BASHRC"
+
+if grep -qE '(^|:)[^#]*\.local/bin([^a-zA-Z0-9_]|$)' "$BASHRC"; then
+    skip "$BIN_DIR already declared in $BASHRC"
+else
+    echo "" >> "$BASHRC"
+    echo "$PATH_MARKER" >> "$BASHRC"
+    echo "$PATH_EXPORT" >> "$BASHRC"
+    ok "Added $BIN_DIR to PATH in $BASHRC"
+    warn "Restart your shell or run: source $BASHRC"
+fi
+
+# ── 4. Move binary into ~/.local/bin ───────────────────────────────────────────
+step "Installing binary"
+
+if [[ -f "$INSTALL_TARGET" ]]; then
+    warn "Overwriting existing binary at $INSTALL_TARGET"
+fi
+
+mv "$BUILD_OUTPUT" "$INSTALL_TARGET"
+chmod +x "$INSTALL_TARGET"
+
+ok "Installed → $INSTALL_TARGET"
+
+# ── Done ───────────────────────────────────────────────────────────────────────
+divider
+echo -e "\n${BOLD}${GREEN}  ✔  Done.${RESET}  Run: ${BOLD}$BINARY_NAME${RESET}\n"
+