fix: terminal garble, black screen on startup, Unicode in header

.vimrc:
- TTY detection: add empty($TERM) and dumb — fixes black screen when
  TERM is unset (non-interactive SSH, minimal environments)
- Replace StartifyHeader() with a static ASCII list — removes the
  synchronous system('git ...') call that caused the black screen while
  vim waited for git before rendering, and removes Unicode block chars
  (███╗) that rendered as garbage on terminals without full UTF-8

install.sh:
- _vim_run() helper: uses </dev/tty when accessible so vim properly
  manages the alternate screen buffer and restores terminal state on
  exit — this was the root cause of garbled output after PlugInstall
  and CocInstall steps; falls back to --not-a-term for CI environments
- Remove 'screen may go dark' warning — no longer needed since terminal
  state is properly managed via /dev/tty

Remove CHANGELOG.md — use git log

.vimrc

@@ -11,7 +11,7 @@
 set nocompatible
 
 " Detect terminal type and capabilities (must be early for conditional configs)
-let g:is_tty = ($TERM =~ 'linux' || $TERM =~ 'screen' || &term =~ 'builtin')
+let g:is_tty = empty($TERM) || $TERM ==# 'dumb' || $TERM =~# 'linux' || $TERM =~# 'screen' || &term =~# 'builtin'
 let g:has_true_color = ($COLORTERM == 'truecolor' || $COLORTERM == '24bit')
 
 " Enable type file detection. Vim will be able to try to detect the type of file in use
@@ -1403,42 +1403,14 @@ endif
 " ============================================================================
 
 if exists('g:plugs["vim-startify"]')
-    " Centered dashboard header — matches neovim startup aesthetic
-    function! StartifyHeader() abort
-        let l:art = [
-            \ '███╗   ███╗ ██╗███╗   ██╗ ██████╗ ███████╗ █████╗ ███╗   ███╗ █████╗ ',
-            \ '████╗ ████║███║████╗  ██║██╔════╝ ██╔════╝██╔══██╗████╗ ████║██╔══██╗',
-            \ '██╔████╔██║╚██║██╔██╗ ██║██║  ███╗███████╗███████║██╔████╔██║███████║ ',
-            \ '██║╚██╔╝██║ ██║██║╚██╗██║██║   ██║╚════██║██╔══██║██║╚██╔╝██║██╔══██║',
-            \ '██║ ╚═╝ ██║ ██║██║ ╚████║╚██████╔╝███████║██║  ██║██║ ╚═╝ ██║██║  ██║',
-            \ '╚═╝     ╚═╝ ╚═╝╚═╝  ╚═══╝ ╚═════╝ ╚══════╝╚═╝  ╚═╝╚═╝     ╚═╝╚═╝  ╚═╝',
+    " Plain ASCII header — no Unicode, no system() calls, instant render
+    let g:startify_custom_header = [
+        \ '   __  __  ___  ___   __  __  ____  ____  __   _  __  __  __    ',
+        \ '  /  \/  \/ _ \/ _ \ /  \/  \/ ___)/ ___)/__\ / |/  \/  \/  \   ',
+        \ '  ) )(  ( ) (_) )(_) ) )(  ( \___ \\__  (  _/ ) |(  _)(  __/ /\ \ ',
+        \ ' /_/ \__/ \___/\___//_/ \__/ (____/(____/\___)_/ \_/\_/ \_/ \/  \/',
+        \ '',
         \ ]
-        let l:art_w  = 71
-        let l:pad    = max([0, (winwidth(0) - l:art_w) / 2])
-        let l:indent = repeat(' ', l:pad)
-        let l:lines  = []
-        for l:line in l:art
-            call add(l:lines, l:indent . l:line)
-        endfor
-        " Info subheader: vim version + cwd + git branch
-        let l:ver = 'Vim ' . (v:version / 100) . '.' . printf('%02d', v:version % 100)
-        let l:cwd = fnamemodify(getcwd(), ':t')
-        let l:git = ''
-        if executable('git')
-            let l:branch = system('git -C ' . shellescape(getcwd()) .
-                \ ' rev-parse --abbrev-ref HEAD 2>/dev/null')
-            if v:shell_error == 0
-                let l:git = '  [' . substitute(l:branch, '\n\+$', '', '') . ']'
-            endif
-        endif
-        let l:info     = l:ver . '  ' . l:cwd . l:git
-        let l:info_pad = max([0, (winwidth(0) - len(l:info)) / 2])
-        call add(l:lines, '')
-        call add(l:lines, repeat(' ', l:info_pad) . l:info)
-        call add(l:lines, '')
-        return l:lines
-    endfunction
-    let g:startify_custom_header = 'StartifyHeader()'
 
     " Sessions first, then recent files — mirrors dashboard plugin ordering
     let g:startify_lists = [

CHANGELOG.md

@@ -1,211 +0,0 @@
-# Changelog
-
-All notable changes to chopsticks are documented here.
-
----
-
-## [1.2.0] - 2026-04-09
-
-Installer robustness overhaul and one-command bootstrap.
-
-### Added
-
-- **`get.sh`** — one-command bootstrap: `curl -fsSL .../get.sh | bash`
-  - Installs `git` if missing (apt / pacman / dnf / brew)
-  - Clones repo to `~/.vim`; `git pull` if already present
-  - `exec bash install.sh </dev/tty` — interactive prompts work correctly even when piped from curl
-- **Network connectivity check** — warns early if `github.com` is unreachable
-- **`curl` preflight** — detects missing curl, auto-installs or dies with clear instructions
-- **`git` preflight** — same as curl
-- **`vim` auto-install** — attempts `pkg_install` before dying if vim is not found
-- **`sudo` availability check** — authenticates once upfront; `--yes` mode skips sudo gracefully with a warning
-- **macOS Homebrew installer** — offers to install Homebrew when `brew` is missing on macOS
-- **Node.js via nvm** — when Node.js is missing, offers to install nvm + Node.js LTS automatically
-- **Python 3 installer** — offers to install python3 via package manager when missing
-- **`safe_download()`** helper — verifies downloads are non-empty and not HTML error pages (guards against GitHub 404 / rate-limit pages being silently treated as binaries)
-- **`pkg_install()`** helper — unified cross-platform install (brew / apt / pacman / dnf)
-- **`arch_github()` / `arch_linux_x64()`** helpers — normalize `uname -m` including `aarch64` → `arm64`
-- **`trap on_error ERR`** — catches unexpected failures, shows line number and debug command
-- **`trap EXIT`** — cleans up temp files (`/tmp/chopsticks-hadolint`, `/tmp/chopsticks-marksman`)
-- **Symlink verification** — confirms `[[ -L ]]` after `ln -sf`
-- **vim-plug fallback** — if curl download fails, falls back to `git clone`; verifies file is non-empty
-- **`vim +PlugInstall` error handling** — warns on non-zero exit instead of silent continue
-- **Screen-dark notice** — informs user before each Vim fullscreen step (PlugInstall, CocInstall)
-
-### Changed
-
-- `set -e` → `set -eo pipefail` — pipeline failures now propagate correctly
-- `ask()` now reads from `/dev/tty` with a test-open check (`{ true </dev/tty; }`) — interactive prompts work under `curl | bash` and non-interactive SSH sessions fall back to "no" safely
-- Binary downloads (hadolint, marksman) use named temp files and `safe_download()` instead of bare curl
-- Arch architecture detection handles `aarch64` in addition to `arm64`
-- System tools section checks `HAS_SUDO` before running apt / pacman / dnf commands
-
----
-
-## [1.1.1] - 2026-04-09
-
-Systematic absorption of best practices from amix/vimrc, tpope/vim-sensible,
-ThePrimeagen, skwp/YADR, and spf13-vim — settings and mappings that appear
-consistently across all top global configs but were missing here.
-
-### Added
-
-- **`set ttimeoutlen=10`** — eliminates the ~500ms ESC lag in terminal Vim; separates
-  keycode timeout from leader-key timeout (`timeoutlen` unchanged at 500ms)
-- **`set display+=lastline`** — shows truncated long lines instead of replacing them with `@@@`
-- **`set complete-=i`** — `Ctrl+n/p` no longer scans all included files; completion is instant
-- **`set wildignorecase`** — case-insensitive filename completion in wildmenu and `:find`
-- **`set path+=**`** — recursive `:find` across the project; wildignore excludes
-  `node_modules`, `__pycache__`, `dist`, `build`, `.git`
-- **`set sessionoptions`** — removes `options` from saved sessions (prevents stale plugin
-  settings from contaminating restored sessions)
-- **`set listchars`** — defines visible whitespace characters; TTY uses ASCII symbols,
-  modern terminals use Unicode (tab `→`, trail `·`, extends `▸`)
-- **`F6`** — toggle visible whitespace on/off
-- **`formatoptions-=cro`** on `BufEnter` — disables automatic comment-leader insertion
-  when pressing Enter or `o/O`; runs on BufEnter to override filetype plugins
-- **`InsertLeave * set nopaste`** — auto-disables paste mode on leaving insert, preventing
-  permanently broken auto-indent
-- **`colorcolumn=+1`** for all languages via `textwidth`:
-  Python 88, Go 120, JS/TS 100, Rust 100, Shell 80 (Markdown disabled)
-- **`vnoremap J/K`** with `gv=gv` — move selected lines down/up and re-indent (ThePrimeagen)
-- **`gV`** — re-select last pasted text (`\`[v\`]` — spf13, YADR)
-- **`cnoremap <C-p>/<C-n>`** — navigate command-line history matching typed prefix (amix, spf13)
-- **`<leader>e :Explore`** — open built-in Netrw file browser; works on any Vim without plugins
-- **`<leader>cd`** — change window-local CWD to current file's directory (was `<leader>wd`)
-- **`<leader>sv`** — reloads vimrc and echoes confirmation
-
-### Changed
-
-- `<leader>wd` renamed to `<leader>cd`; now uses `lcd` (window-local) instead of `cd` (global)
-- `wildignore` expanded with `*/node_modules/*`, `*/__pycache__/*`, `*/dist/*`, `*/build/*`
-
----
-
-## [1.1.0] - 2026-04-09
-
-Ergonomics and automation overhaul: community-standard keybindings, seamless
-tmux integration, an in-Vim cheat sheet, a beginner onboarding section, and
-several correctness fixes from a systematic review.
-
-### Added
-
-- **`jk` → `Esc`** in insert mode — ergonomic escape without reaching for the key
-- **`Ctrl+s` save** in normal and insert mode (add `stty -ixon` to shell rc to enable
-  in terminals that use XON/XOFF flow control)
-- **`//` visual search** — search for visually selected text using `\V` very-nomagic escaping
-- **`<leader>p` / `<leader>P`** — paste from system clipboard after/before cursor
-- **`<leader>rG`** — ripgrep word under cursor with `-F` (literal, not regex)
-- **`<leader>u`** — leader-key alias for UndoTree (complements `F5`)
-- **`<leader>tt`** — leader-key alias for Tagbar (complements `F8`)
-- **`,?` in-Vim cheat sheet** — opens a read-only buffer covering modes, survival
-  commands, search, code intelligence, git, and clipboard; press `q` to close
-- **vim-tmux-navigator** plugin — `Ctrl+h/j/k/l` navigates seamlessly across Vim
-  splits and tmux panes without a prefix key
-- **`install.sh` tmux step** — detects tmux and optionally appends the four
-  navigator `bind-key` lines to `~/.tmux.conf`; warns about `C-l`/screen-clear tradeoff
-- **`install.sh` survival guide** — post-install output now shows the 4 essential
-  commands for first-time Vim users, plus the `stty -ixon` advisory
-- **QUICKSTART.md Step 0** — new first section explaining Vim modes (Normal/Insert/Visual)
-  and 4 survival commands; makes the guide usable by users who have never opened Vim
-- **`let b:ale_enabled = 0`** in `LargeFileSettings()` — ALE no longer spawns
-  linter subprocesses for files over 10 MB
-
-### Changed
-
-- **ALE lint triggers** — `ale_lint_on_text_changed` changed from `'never'` to `'normal'`;
-  `ale_lint_on_insert_leave` and `ale_lint_on_enter` changed from `0` to `1` — diagnostics
-  now refresh on buffer enter and after edits settle in normal mode
-- **`<C-h/j/k/l>` manual maps removed** — vim-tmux-navigator owns these keys at
-  plugin load time; the previous hand-rolled `<C-W>` maps were unreachable dead code
-- **`<leader>pp` paste-mode toggle removed** — functionally identical to the existing
-  `F2` pastetoggle; its presence caused a 500 ms delay on every `<leader>p` paste
-
-### Fixed
-
-- **ALE navigation direction reversed** — `[e` now correctly calls `ALEPrevious`
-  and `]e` calls `ALENext`, matching the vim-unimpaired `[`/`]` convention
-- **`<leader>rG` regex metacharacter bug** — without `-F`, characters like `.` `*`
-  `(` in the cursor word were treated as regex, producing incorrect matches
-
----
-
-## [1.0.0] - 2026-03-29
-
-First stable release. Full-stack engineering environment out of the box — automatic
-installation, tiered LSP, TTY fallback, and coverage for 14 languages.
-
-### Added
-- **Arch Linux support** in `install.sh` — pacman branch for all system tools
-- **`hadolint`** added to system tools installation (Dockerfile linting)
-- **`staticcheck`** added to Go tools (replaces archived `golint`)
-- **`yamllint`** added to pip tools (YAML linting)
-- **`coc-settings.json`** — configures `marksman` as Markdown LSP for CoC via
-  `languageserver` entry; symlinked automatically by `install.sh`
-- **pip3 bootstrap** in `install.sh` — auto-installs pip3 when python3 is present
-  but pip3 is absent (common on Ubuntu minimal images)
-- **9 named augroups** in `.vimrc` — all loose `autocmd` statements now wrapped
-  with `autocmd!` to prevent doubling on `:source $MYVIMRC`:
-  `ChopstickTabHistory`, `ChopstickResize`, `ChopstickStdin`, `CocHighlight`,
-  `ChopstickCleanup`, `ChopstickFiletype`, `ChopstickTTYLargeFile`,
-  `ChopstickWhichKey`, `ChopstickStartify`
-- **TTY-safe plugin install** — `vim +PlugInstall +qall </dev/null` prevents
-  Vim from blocking in non-interactive/piped environments
-
-### Changed
-- SQL tooling unified to **`sqlfluff`** (pip) — `sqlfmt` removed from npm section
-- Go linter changed from `golint` (archived 2023) to **`staticcheck`**
-- Markdown LSP changed from broken `coc-marksman` (npm) to **`marksman`** binary
-  configured via `coc-settings.json`
-
-### Fixed
-- **vim-go startup hang** on Arch Linux — removed `:GoUpdateBinaries` post-install
-  hook; set `g:go_gopls_enabled = 0` to prevent conflict with `coc-go`
-- **E495 errors** (`<afile>` in special buffers) — all `<afile>` usages guarded
-  with `!empty(expand('<afile>'))` and `empty(&buftype)` checks
-- **`g:go_def_mode` conflict** — now conditional: uses `gopls` when CoC active,
-  `godef` when vim-lsp active (avoids error when gopls is disabled)
-- **vim startup UX** — NERDTree + Startify layout for `vim .` and bare `vim`
-- **`coc-marksman` silent failure** — package does not exist on npm; replaced with
-  native `languageserver` configuration in `coc-settings.json`
-- **CoC startup warning** in no-node environments — `g:coc_start_at_startup = 0`
-  and `g:coc_disable_startup_warning = 1` set when `g:use_coc = 0`
-
----
-
-## [0.9.0] - 2026-02-21
-
-### Added
-- **Full-stack language coverage** — LSP, lint, and format for: Python,
-  JavaScript, TypeScript, Go, Rust, Shell, YAML, HTML, CSS/SCSS, Less,
-  JSON, Markdown, SQL, Dockerfile
-- **`install.sh` overhaul** — automated installation of system tools, npm tools,
-  pip tools, Go tools, and CoC language server extensions with platform detection
-  and interactive prompts; `--yes` flag for non-interactive mode
-- **vim-startify** startup screen with dynamic header (version, cwd, git branch)
-- **vim-which-key** keybinding popup on `,` + 500ms pause
-- **Startup layout** — `vim .` opens NERDTree left + Startify right; bare `vim`
-  opens Startify with NERDTree alongside
-- **Session management** via vim-obsession + vim-prosession
-- **Large file handling** — syntax and undo disabled for files > 10 MB
-- **Project-local config** — `.vimrc` in project root auto-loaded via `set exrc`
-- **Persistent undo** — `~/.vim/.undo/` with `undolevels=1000`
-
-### Changed
-- Tiered LSP backend: CoC (Node.js) preferred, vim-lsp (no Node.js) as fallback
-- All CoC and vim-lsp keybindings unified (`gd`, `K`, `[g`/`]g`, `,rn`, `,ca`)
-- ALE `fix_on_save` disabled when vim-lsp active (prevents double-format)
-- NERDTree autocmd wrapped in `augroup NERDTreeAutoClose`
-
-### Fixed
-- Multiple leader key conflicts resolved (`,ad`, `,cd`, `,cp`, `,sp`, `,t`)
-- CtrlP removed (redundant with FZF)
-- Duplicate `set` options cleaned up
-- `<leader>A` dead mapping (no alternate-file plugin) removed
-
----
-
-## [0.1.0] - 2024
-
-Initial release — base Vim configuration with vim-plug, basic plugins, and
-TTY/non-TTY detection.

install.sh

@@ -360,9 +360,17 @@ else
 fi
 
 step "Installing Vim plugins"
-info "(Vim will open fullscreen to install plugins — screen may go dark for 10-30s, this is normal)"
-# </dev/null prevents Vim from reading stdin in non-interactive/piped environments
-if ! vim +PlugInstall +qall </dev/null; then
+# Use /dev/tty when available so vim properly manages the terminal (alternate
+# screen buffer, cursor, colours) and restores it cleanly on exit.
+# Fall back to --not-a-term for non-interactive/CI environments.
+_vim_run() {
+    if { true </dev/tty; } 2>/dev/null; then
+        vim "$@" </dev/tty
+    else
+        vim --not-a-term "$@" </dev/null 2>/dev/null
+    fi
+}
+if ! _vim_run +PlugInstall +qall; then
     warn "vim +PlugInstall exited non-zero — plugins may be partially installed"
     warn "Run :PlugInstall manually inside Vim if something looks wrong"
 else
@@ -641,9 +649,9 @@ step "CoC language server extensions"
 
 if [[ $HAS_NODE -eq 1 ]]; then
     if ask "Install CoC language servers (LSP for all configured languages)?"; then
-        info "(Downloading CoC extensions via npm — screen may go dark for 1-3 minutes, this is normal)"
+        info "(Downloading CoC extensions via npm — this may take 1-3 minutes)"
         # Note: coc-marksman doesn't exist on npm — markdown LSP is handled via coc-settings.json
-        vim +'CocInstall -sync coc-json coc-tsserver coc-pyright coc-sh coc-html coc-css coc-yaml coc-go coc-rust-analyzer coc-sql' +qall </dev/null
+        _vim_run +'CocInstall -sync coc-json coc-tsserver coc-pyright coc-sh coc-html coc-css coc-yaml coc-go coc-rust-analyzer coc-sql' +qall
         ok "CoC language servers installed"
     else
         skip "CoC language servers"