diff --git a/.vimrc b/.vimrc
index d3b0f2c..d3e001f 100644
--- a/.vimrc
+++ b/.vimrc
@@ -160,6 +160,9 @@ call plug#end()
 " ============================================================================
 
 if g:has_true_color && has('termguicolors') && !g:is_tty
+    " Required for true color inside tmux
+    let &t_8f = "\<Esc>[38;2;%lu;%lu;%lum"
+    let &t_8b = "\<Esc>[48;2;%lu;%lu;%lum"
     set termguicolors
 endif
 
@@ -216,20 +219,20 @@ nmap <leader>q :q<cr>
 nmap <leader>x :x<cr>
 
 " Clear search highlight
-map <silent> <leader><cr> :noh<cr>
+nnoremap <silent> <leader><cr> :noh<cr>
 
 " Buffer navigation
-map <leader>bd :Bclose<cr>
-map <leader>ba :bufdo bd<cr>
-map <leader>l  :bnext<cr>
-map <leader>h  :bprevious<cr>
+nnoremap <leader>bd :Bclose<cr>
+nnoremap <leader>ba :bufdo bd<cr>
+nnoremap <leader>l  :bnext<cr>
+nnoremap <leader>h  :bprevious<cr>
 
 " Tab management
-map <leader>tn :tabnew<cr>
-map <leader>to :tabonly<cr>
-map <leader>tc :tabclose<cr>
-map <leader>tm :tabmove
-map <leader>t<leader> :tabnext<cr>
+nnoremap <leader>tn :tabnew<cr>
+nnoremap <leader>to :tabonly<cr>
+nnoremap <leader>tc :tabclose<cr>
+nnoremap <leader>tm :tabmove
+nnoremap <leader>t<leader> :tabnext<cr>
 
 let g:lasttab = 1
 nmap <Leader>tl :exe "tabn ".g:lasttab<CR>
@@ -238,8 +241,8 @@ augroup ChopstickTabHistory
     autocmd TabLeave * let g:lasttab = tabpagenr()
 augroup END
 
-map <leader>te :tabedit <C-r>=expand("%:p:h")<cr>/
-map <leader>cd :lcd %:p:h<cr>:pwd<cr>
+nnoremap <leader>te :tabedit <C-r>=expand("%:p:h")<cr>/
+nnoremap <leader>cd :lcd %:p:h<cr>:pwd<cr>
 
 " File browser (netrw — built-in, no plugins)
 nnoremap <leader>e :Explore<CR>
@@ -255,18 +258,18 @@ nnoremap gV `[v`]
 cnoremap <C-p> <Up>
 cnoremap <C-n> <Down>
 
-" Move lines
-nmap <M-j> mz:m+<cr>`z
-nmap <M-k> mz:m-2<cr>`z
-vnoremap J :m '>+1<CR>gv=gv
-vnoremap K :m '<-2<CR>gv=gv
+" Move lines (Alt+j / Alt+k in both normal and visual mode)
+nnoremap <M-j> :m .+1<CR>==
+nnoremap <M-k> :m .-2<CR>==
+vnoremap <M-j> :m '>+1<CR>gv=gv
+vnoremap <M-k> :m '<-2<CR>gv=gv
 
 " Spell checking
-map <leader>ss :setlocal spell!<cr>
-map <leader>sn ]s
-map <leader>sp [s
-map <leader>sa zg
-map <leader>s? z=
+nnoremap <leader>ss :setlocal spell!<cr>
+nnoremap <leader>sn ]s
+nnoremap <leader>sp [s
+nnoremap <leader>sa zg
+nnoremap <leader>s? z=
 
 " Toggle modes
 set pastetoggle=<F2>
@@ -506,7 +509,11 @@ let g:lsp_signs_warning     = {'text': '!'}
 let g:lsp_signs_information = {'text': 'i'}
 let g:lsp_signs_hint        = {'text': '>'}
 
-set completeopt=menuone,noinsert,noselect
+if has('patch-8.1.1517')
+    set completeopt=menuone,noinsert,noselect,popup
+else
+    set completeopt=menuone,noinsert,noselect
+endif
 set pumheight=15
 let g:asyncomplete_auto_popup       = 1
 let g:asyncomplete_auto_completeopt = 1
@@ -587,9 +594,9 @@ let g:EasyMotion_smartcase  = 1
 " s + two chars: jump anywhere on screen
 nmap s <Plug>(easymotion-overwin-f2)
 
-" J/K: line motions
-map <Leader>j <Plug>(easymotion-j)
-map <Leader>k <Plug>(easymotion-k)
+" Line motions
+nmap <Leader>j <Plug>(easymotion-j)
+nmap <Leader>k <Plug>(easymotion-k)
 
 " ============================================================================
 " => UndoTree
@@ -620,12 +627,12 @@ endif
 
 if exists('g:plugs["vim-startify"]')
     let g:startify_custom_header = [
-        \ '  ███╗   ███╗ ██╗███╗   ██╗ ██████╗ ███████╗ █████╗ ███╗   ███╗ █████╗  ',
-        \ '  ████╗ ████║███║████╗  ██║██╔════╝ ██╔════╝██╔══██╗████╗ ████║██╔══██╗ ',
-        \ '  ██╔████╔██║╚██║██╔██╗ ██║██║  ███╗███████╗███████║██╔████╔██║███████║  ',
-        \ '  ██║╚██╔╝██║ ██║██║╚██╗██║██║   ██║╚════██║██╔══██║██║╚██╔╝██║██╔══██║ ',
-        \ '  ██║ ╚═╝ ██║ ██║██║ ╚████║╚██████╔╝███████║██║  ██║██║ ╚═╝ ██║██║  ██║ ',
-        \ '  ╚═╝     ╚═╝ ╚═╝╚═╝  ╚═══╝ ╚═════╝ ╚══════╝╚═╝  ╚═╝╚═╝     ╚═╝╚═╝  ╚═╝',
+        \ '         ██████╗██╗  ██╗ ██████╗ ██████╗ ███████╗████████╗██╗ ██████╗██╗  ██╗███████╗',
+        \ '        ██╔════╝██║  ██║██╔═══██╗██╔══██╗██╔════╝╚══██╔══╝██║██╔════╝██║ ██╔╝██╔════╝',
+        \ '        ██║     ███████║██║   ██║██████╔╝███████╗   ██║   ██║██║     █████╔╝ ███████╗',
+        \ '        ██║     ██╔══██║██║   ██║██╔═══╝ ╚════██║   ██║   ██║██║     ██╔═██╗ ╚════██║',
+        \ '        ╚██████╗██║  ██║╚██████╔╝██║     ███████║   ██║   ██║╚██████╗██║  ██╗███████║',
+        \ '         ╚═════╝╚═╝  ╚═╝ ╚═════╝ ╚═╝     ╚══════╝   ╚═╝   ╚═╝ ╚═════╝╚═╝  ╚═╝╚══════╝',
         \ '',
         \ ]
 
@@ -636,11 +643,16 @@ if exists('g:plugs["vim-startify"]')
         \ { 'type': 'bookmarks', 'header': ['   Bookmarks']    },
         \ ]
 
-    let g:startify_bookmarks = [
-        \ {'v': '~/.vimrc'},
-        \ {'z': '~/.zshrc'},
-        \ {'b': '~/.bashrc'},
-        \ ]
+    let g:startify_bookmarks = [{'v': '~/.vimrc'}]
+    if filereadable(expand('~/.zshrc'))
+        call add(g:startify_bookmarks, {'z': '~/.zshrc'})
+    endif
+    if filereadable(expand('~/.bashrc'))
+        call add(g:startify_bookmarks, {'b': '~/.bashrc'})
+    endif
+    if filereadable(expand('~/.config/fish/config.fish'))
+        call add(g:startify_bookmarks, {'f': '~/.config/fish/config.fish'})
+    endif
 
     let g:startify_session_persistence = 1
     let g:startify_session_autoload    = 1
@@ -797,7 +809,7 @@ endfunc
 " Suppress comment continuation on Enter / o / O
 augroup ChopstickFormatOptions
     autocmd!
-    autocmd BufEnter * setlocal formatoptions-=c formatoptions-=r formatoptions-=o
+    autocmd FileType * setlocal formatoptions-=c formatoptions-=r formatoptions-=o
 augroup END
 
 " Auto-disable paste mode on leaving insert
@@ -806,13 +818,6 @@ augroup ChopstickPaste
     autocmd InsertLeave * set nopaste
 augroup END
 
-" Strip trailing whitespace on save (real files only)
-augroup ChopstickCleanup
-    autocmd!
-    autocmd BufWritePre *
-        \ if empty(&buftype) && !empty(expand('<afile>')) | call CleanExtraSpaces() | endif
-augroup END
-
 augroup ChopstickFiletype
     autocmd!
 
@@ -907,7 +912,7 @@ nnoremap <leader><leader> <c-^>
 nnoremap <leader>W :%s/\s\+$//<CR>:let @/=''<CR>
 
 " Source helpers
-nnoremap <leader>so :source %<CR>
+nnoremap <leader>so :if &filetype ==# 'vim' <Bar> source % <Bar> echo "Sourced " . expand('%') <Bar> else <Bar> echo "Not a vim file" <Bar> endif<CR>
 nnoremap <leader>ev :edit $MYVIMRC<CR>
 nnoremap <leader>sv :source $MYVIMRC<CR>:echo "vimrc reloaded"<CR>
 
@@ -915,8 +920,10 @@ nnoremap <leader>sv :source $MYVIMRC<CR>:echo "vimrc reloaded"<CR>
 nnoremap <leader>* :%s/\<<C-r><C-w>\>//g<Left><Left>
 
 " Copy path / filename to clipboard
-nnoremap <leader>cp :let @+ = expand("%:p")<CR>:echo "Copied: " . expand("%:p")<CR>
-nnoremap <leader>cf :let @+ = expand("%:t")<CR>:echo "Copied: " . expand("%:t")<CR>
+if has('clipboard')
+    nnoremap <leader>cp :let @+ = expand("%:p")<CR>:echo "Copied: " . expand("%:p")<CR>
+    nnoremap <leader>cf :let @+ = expand("%:t")<CR>:echo "Copied: " . expand("%:t")<CR>
+endif
 
 " Scratch markdown buffer
 nnoremap <leader>ms :e ~/buffer.md<cr>
@@ -981,7 +988,6 @@ augroup END
 function! LargeFileSettings()
     setlocal bufhidden=unload
     setlocal undolevels=-1
-    setlocal eventignore+=FileType
     setlocal noswapfile
     setlocal syntax=
     let b:ale_enabled = 0
diff --git a/README.md b/README.md
index 0f9e938..f2feec7 100644
--- a/README.md
+++ b/README.md
@@ -124,6 +124,10 @@ Supported languages and their servers:
 | Markdown | marksman |
 | SQL | sqls |
 
+**Note:** While vim-lsp itself needs no Node.js, some language servers (TypeScript,
+HTML, CSS, JSON, YAML) are npm packages that require Node.js to run. Python (pylsp),
+Go (gopls), and Rust (rust-analyzer) language servers do not need Node.js.
+
 **Markdown LSP** requires `marksman` as a standalone binary:
 
 ```bash
@@ -203,8 +207,14 @@ Press `,?` at any time to open the built-in cheat sheet.
 | `Space` | Toggle code fold |
 | `Y` | Yank to end of line |
 | `Ctrl+d` / `Ctrl+u` | Half-page scroll, cursor centred |
-| `Alt+j` / `Alt+k` | Move line down / up |
+| `Alt+j` / `Alt+k` | Move line down / up (normal and visual) |
 | `,u` | Undo tree (visual branch history) |
+| `F2` | Toggle paste mode |
+| `F3` / `F4` | Toggle line numbers / relative numbers |
+| `F5` | Toggle undo tree |
+| `F6` | Toggle invisible characters |
+| `gV` | Reselect last paste |
+| `//` | Search visual selection |
 
 ### Survival
 
@@ -212,7 +222,8 @@ Press `,?` at any time to open the built-in cheat sheet.
 |-----|--------|
 | `jk` | Exit insert mode |
 | `Esc` | Exit insert / visual mode |
-| `Ctrl+s` | Save |
+| `jk` | Exit insert mode |
+| `Ctrl+s` | Save (any mode) |
 | `,w` | Save |
 | `,x` | Save and quit |
 | `,q` | Quit |
@@ -227,6 +238,13 @@ Press `,?` at any time to open the built-in cheat sheet.
 | `Esc Esc` | Exit terminal mode |
 | `,tn` / `,tc` | New tab / close tab |
 | `,tl` | Toggle to last tab |
+| `,ev` / `,sv` | Edit / reload `~/.vimrc` |
+| `,cp` / `,cf` | Copy file path / filename to clipboard |
+| `,*` | Search and replace word under cursor |
+| `,F` | Re-indent entire file |
+| `,W` | Strip trailing whitespace |
+| `,ms` | Open scratch markdown buffer |
+| `,ss` | Toggle spell checking |
 
 ---
 
diff --git a/install.sh b/install.sh
index 1fec44b..6696e85 100755
--- a/install.sh
+++ b/install.sh
@@ -1,23 +1,41 @@
 #!/usr/bin/env bash
 # install.sh - chopsticks vim configuration installer
-# Usage: cd /path/to/chopsticks && ./install.sh [--yes]
+# Usage: cd /path/to/chopsticks && ./install.sh [--yes] [--help]
 #
-# --yes  non-interactive: install all optional components automatically
+# --yes   non-interactive: install all optional components automatically
+# --help  show this help and exit
 
 set -eo pipefail
 
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 AUTO_YES=0
-[[ "${1:-}" == "--yes" ]] && AUTO_YES=1
+for arg in "$@"; do
+    case "$arg" in
+        --yes)  AUTO_YES=1 ;;
+        --help|-h)
+            echo "Usage: ./install.sh [OPTIONS]"
+            echo ""
+            echo "Options:"
+            echo "  --yes    Non-interactive mode: select all defaults automatically"
+            echo "  --help   Show this help and exit"
+            echo ""
+            echo "Supported platforms: macOS (brew), Debian/Ubuntu (apt), Arch (pacman), Fedora (dnf)"
+            exit 0 ;;
+    esac
+done
 
-# ── Colours ───────────────────────────────────────────────────────────────────
-GREEN='\033[0;32m'
-YELLOW='\033[1;33m'
-RED='\033[0;31m'
-BOLD='\033[1m'
-CYAN='\033[0;36m'
-DIM='\033[2m'
-NC='\033[0m'
+# ── Colours (respect NO_COLOR and non-TTY) ───────────────────────────────────
+if [[ -t 1 ]] && [[ -z "${NO_COLOR:-}" ]]; then
+    GREEN='\033[0;32m'
+    YELLOW='\033[1;33m'
+    RED='\033[0;31m'
+    BOLD='\033[1m'
+    CYAN='\033[0;36m'
+    DIM='\033[2m'
+    NC='\033[0m'
+else
+    GREEN='' YELLOW='' RED='' BOLD='' CYAN='' DIM='' NC=''
+fi
 
 ok()   { echo -e "${GREEN}[OK]${NC}  $1"; }
 warn() { echo -e "${YELLOW}[!]${NC}  $1"; }
@@ -50,13 +68,14 @@ ask() {
 
 # ── Error trap ────────────────────────────────────────────────────────────────
 on_error() {
-    echo -e "\n${RED}[FATAL]${NC} Unexpected error at line ${BASH_LINENO[0]}." >&2
+    echo -e "\n${RED}[FATAL]${NC} Command '${BASH_COMMAND}' failed at line ${BASH_LINENO[0]}." >&2
     echo "  To get a full debug log:" >&2
     echo "    ./install.sh 2>&1 | tee /tmp/chopsticks-install.log" >&2
     echo "  Report issues: https://github.com/m1ngsama/chopsticks/issues" >&2
 }
 trap on_error ERR
-trap 'rm -f /tmp/chopsticks-hadolint /tmp/chopsticks-marksman 2>/dev/null' EXIT
+_TMPDIR=$(mktemp -d "${TMPDIR:-/tmp}/chopsticks-XXXXXX")
+trap 'rm -rf "$_TMPDIR" 2>/dev/null' EXIT
 
 # ── Safe download helper ──────────────────────────────────────────────────────
 safe_download() {
@@ -604,7 +623,7 @@ elif [[ $HAS_APT -eq 1 ]]; then
         else
             _do_binary_apt "hadolint" hadolint "$_I_HADOLINT" \
                 "https://github.com/hadolint/hadolint/releases/download/${HVER}/hadolint-Linux-${HARCH}" \
-                /tmp/chopsticks-hadolint
+                "$_TMPDIR/hadolint"
         fi
     else
         skip "hadolint"; SKIPPED+=("hadolint")
@@ -621,7 +640,7 @@ elif [[ $HAS_APT -eq 1 ]]; then
         else
             _do_binary_apt "marksman" marksman "$_I_MARKSMAN" \
                 "https://github.com/artempyanykh/marksman/releases/download/${MVER}/marksman-linux-${MARCH}" \
-                /tmp/chopsticks-marksman
+                "$_TMPDIR/marksman"
         fi
     else
         skip "marksman"; SKIPPED+=("marksman")
@@ -714,8 +733,10 @@ else
         if command -v "$check" >/dev/null 2>&1; then
             ok "$pkg (already installed)"; return
         fi
-        if pip3 install --quiet "$pkg" 2>/dev/null || \
-           pip3 install --quiet --break-system-packages "$pkg" 2>/dev/null; then
+        if pip3 install --quiet "$pkg" 2>/dev/null; then
+            ok "$pkg"; INSTALLED+=("$pkg")
+        elif pip3 install --quiet --break-system-packages "$pkg" 2>/dev/null; then
+            warn "$pkg installed with --break-system-packages (consider using a virtualenv)"
             ok "$pkg"; INSTALLED+=("$pkg")
         else
             fail "$pkg"; FAILED+=("$pkg")