refactor(install): auto-detect OS, drop target arg, harden script

Rework install.sh:
- detect OS via uname (Darwin -> bashrc-osx, else bashrc-linux);
  remove the {server|linux|arm|osx} argument and bashrc-server
- fix broken /tmp/config paths that made server+osx install no bashrc
- switch #!/bin/sh -> bash, add set -euo pipefail, quote expansions
- clone nerdtree into bundle (was a no-op cp of a dir), drop the
  redundant molokai clone (already tracked in vim/colors)
- guard apt-get behind command -v so macOS skips it
- make re-runnable; drop the no-op trailing 'source ~/.bashrc'

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

install.sh

@@ -1,47 +1,55 @@
-#!/bin/sh
+#!/usr/bin/env bash
+# install.sh — deploy the vim + bash dotfiles. OS is auto-detected.
+# Usage: ./install.sh
+set -euo pipefail
 
-if [ -z $1 ]; then
-	echo "Usage: $0 {server|linux|arm|osx}"
-	exit 1
+# Resolve the repo root so the script works from any working directory.
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+
+# System packages: Debian/Ubuntu only. Skipped where apt-get is absent (e.g. macOS).
+if command -v apt-get >/dev/null 2>&1; then
+	sudo apt-get update
+	sudo apt-get upgrade -y
+	sudo apt-get install -y vim git gcc make pkg-config unzip dkms git-lfs
+else
+	echo "apt-get not found — skipping system packages (install vim/git manually)."
 fi
 
-sudo apt-get update && sudo apt-get upgrade -y && sudo apt-get install -y vim git gcc make pkg-config unzip dkms git-lfs
+# Back up any existing config before overwriting (re-runnable).
+echo "Backing up existing config to ~/Oldconfig"
+rm -rf "$HOME/Oldconfig"
+mkdir -p "$HOME/Oldconfig"
+for cfg in .vim .Sublivim .vimrc .bashrc; do
+	if [ -e "$HOME/$cfg" ]; then
+		mv "$HOME/$cfg" "$HOME/Oldconfig/"
+	fi
+done
 
-echo "Save older config in ~/Oldconfig ( with '.' like \".vimrc\" )"
-rm -rf $HOME/Oldconfig 2>&-
-mkdir -p $HOME/Oldconfig
-mv $HOME/.vim $HOME/Oldconfig 2>&-
-mv $HOME/.Sublivim $HOME/Oldconfig 2>&-
-mv $HOME/.vimrc $HOME/Oldconfig 2>&-
-mv $HOME/.bashrc $HOME/Oldconfig 2>&-
+# Recreate the vim directory layout.
+echo "Creating vim directory structure"
+mkdir -p "$HOME"/.vim/{autoload,colors,syntax,plugin,spell,config,bundle}
 
-echo "Create new vim architecture"
-mkdir -p $HOME/.vim/autoload $HOME/.vim/colors $HOME/.vim/syntax $HOME/.vim/plugin $HOME/.vim/spell $HOME/.vim/config $HOME/.vim/bundle
+# Fetch external vim plugins (rm first so re-runs do not fail on existing clones).
+echo "Cloning vim plugins"
+rm -rf "$HOME/.vim/bundle/syntastic"
+git clone --quiet https://github.com/vim-syntastic/syntastic "$HOME/.vim/bundle/syntastic"
+rm -rf "$HOME/.vim/bundle/nerdtree"
+git clone --quiet https://github.com/preservim/nerdtree "$HOME/.vim/bundle/nerdtree"
 
-echo "Cloning some git repositories"
-#git clone --quiet https://github.com/tpope/vim-pathogen $HOME/.vim/pathogen
-git clone --quiet https://github.com/vim-syntastic/syntastic $HOME/.vim/bundle/syntastic
-git clone --quiet https://github.com/tomasr/molokai /tmp/molokai
-git clone --quiet https://github.com/preservim/nerdtree /tmp/nerdtree
+# Deploy tracked vim files: vimrc, pathogen loader, molokai colorscheme.
+echo "Deploying vim config"
+cp -rupv "$SCRIPT_DIR"/vim/* "$HOME/.vim/"
+ln -sf "$HOME/.vim/vimrc" "$HOME/.vimrc"
 
-echo "Building new vim"
-cp -rupv ./vim/* $HOME/.vim
-#ln -s $HOME/.vim/pathogen/autoload/pathogen.vim $HOME/.vim/autoload/pathogen.vim
-cp /tmp/molokai/colors/molokai.vim $HOME/.vim/colors
-cp /tmp/nerdtree $HOME/.vim/bundle/
-ln -s $HOME/.vim/vimrc $HOME/.vimrc
-
-if [ "$1" == "server" ]; then
-	cp /tmp/config/bash/bashrc-server $HOME/.bashrc
-elif [ "$1" == "linux" -o "$1" == "arm" ]; then
-	cp bash/bashrc-linux $HOME/.bashrc
-elif [ "$1" == "osx" ]; then
-	cp /tmp/config/bash/bashrc-osx $HOME/.bashrc
+# Deploy the bashrc matching the detected OS.
+# macOS uses bashrc-osx (falling back to bashrc-linux if absent); everything else uses bashrc-linux.
+if [ "$(uname -s)" = "Darwin" ] && [ -f "$SCRIPT_DIR/bash/bashrc-osx" ]; then
+	bashrc="bash/bashrc-osx"
+else
+	bashrc="bash/bashrc-linux"
 fi
+echo "Deploying $bashrc"
+cp "$SCRIPT_DIR/$bashrc" "$HOME/.bashrc"
 
-echo "Deleting temporary files"
-rm -rf /tmp/molokai
-
-source $HOME/.bashrc
-echo "Ïf you are running zsh, please change for bash =)"
-echo "Enjoy !"
+echo "Done. Restart your shell or run: source ~/.bashrc"
+echo "If you use zsh, switch to bash to enjoy these settings =)"