feat(stacks): add --static flag to completion command

Bakes the current stack list into the generated completion script instead
of using runtime directory discovery. Useful for remote hosts where the
stacks dir path differs from the local repo.

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

stacks.sh

@@ -726,6 +726,7 @@ REDIS
 # ─── Shell Completion ─────────────────────────────────────────────────────────
 
 _completion_bash() {
+  local stacks_init="$1"  # pre-rendered stacks array initialisation block
   cat << 'EOF'
 # stacks.sh bash completion — source this file or place in /etc/bash_completion.d/
 _stacks_complete() {
@@ -736,19 +737,10 @@ _stacks_complete() {
     prev="${COMP_WORDS[COMP_CWORD-1]}"
   }
 
-  # Locate the stacks dir from the invoked script path
   local script="${COMP_WORDS[0]}"
-  local stacks_dir
-  stacks_dir="$(cd "$(dirname "$(realpath "$script" 2>/dev/null || echo "$script")")" 2>/dev/null && pwd)"
-
-  local -a stacks=()
-  if [[ -d "$stacks_dir" ]]; then
-    for d in "$stacks_dir"/*/; do
-      local n; n="$(basename "$d")"
-      [[ "$n" == _* ]] && continue
-      [[ -f "$d/compose.yml" ]] && stacks+=("$n")
-    done
-  fi
+EOF
+  echo "$stacks_init"
+  cat << 'EOF'
 
   local commands="ls ps up down restart pull logs exec run config images top stats compose update backup new completion version help"
   local update_subs="install uninstall run status logs next"
@@ -758,7 +750,7 @@ _stacks_complete() {
   case "${COMP_WORDS[1]}" in
     update)  COMPREPLY=( $(compgen -W "$update_subs" -- "$cur") ); return ;;
     backup)  COMPREPLY=( $(compgen -W "$backup_subs" -- "$cur") ); return ;;
-    completion) COMPREPLY=( $(compgen -W "bash zsh --install" -- "$cur") ); return ;;
+    completion) COMPREPLY=( $(compgen -W "bash zsh --install --static" -- "$cur") ); return ;;
     new)
       case "$prev" in
         --db)   COMPREPLY=( $(compgen -W "postgres mysql mariadb" -- "$cur") ); return ;;
@@ -803,22 +795,15 @@ EOF
 }
 
 _completion_zsh() {
+  local stacks_init="$1"  # pre-rendered stacks array initialisation block
   cat << 'EOF'
 #compdef stacks.sh stacks
 
 _stacks() {
   local script="${words[1]}"
-  local stacks_dir
-  stacks_dir="$(cd "$(dirname "$(realpath "$script" 2>/dev/null || echo "$script")")" 2>/dev/null && pwd)"
-
-  local -a stacks=()
-  if [[ -d "$stacks_dir" ]]; then
-    for d in "$stacks_dir"/*/; do
-      local n="${d:t}"
-      [[ "$n" == _* ]] && continue
-      [[ -f "${d}compose.yml" ]] && stacks+=("$n")
-    done
-  fi
+EOF
+  echo "$stacks_init"
+  cat << 'EOF'
 
   local -a commands=(
     'ls:List all stacks with live status'
@@ -916,6 +901,7 @@ _stacks() {
         completion)
           _arguments \
             '--install[Install the completion file]' \
+            '--static[Bake current stack list into completion script]' \
             '1:shell:(bash zsh)'
           ;;
       esac
@@ -928,13 +914,14 @@ EOF
 }
 
 cmd_completion() {
-  local shell="" install=false
+  local shell="" install=false static=false
 
   for arg in "$@"; do
     case "$arg" in
       bash|zsh)    shell="$arg" ;;
       --install)   install=true ;;
-      *)           die "Unknown argument: $arg  (bash|zsh [--install])" ;;
+      --static)    static=true ;;
+      *)           die "Unknown argument: $arg  (bash|zsh [--install] [--static])" ;;
     esac
   done
 
@@ -944,10 +931,52 @@ cmd_completion() {
     warn "No shell specified, defaulting to: $shell"
   fi
 
+  # Build the stacks array initialisation block — either dynamic (runtime discovery)
+  # or static (current list baked in at generation time).
+  local bash_stacks_init zsh_stacks_init
+
+  if $static; then
+    local -a cur_stacks=()
+    mapfile -t cur_stacks < <(list_all_stacks)
+    [[ ${#cur_stacks[@]} -eq 0 ]] && die "No stacks found to bake into completion"
+    local generated_at
+    generated_at="$(date '+%Y-%m-%d')"
+    bash_stacks_init="  # Stacks baked in at generation time (${generated_at}) — rerun to update
+  local -a stacks=(${cur_stacks[*]})"
+    zsh_stacks_init="  # Stacks baked in at generation time (${generated_at}) — rerun to update
+  local -a stacks=(${cur_stacks[*]})"
+    info "Baking ${#cur_stacks[@]} stacks: ${cur_stacks[*]}"
+  else
+    bash_stacks_init='  # Dynamically discover stacks from the script location at completion time
+  local stacks_dir
+  stacks_dir="$(cd "$(dirname "$(realpath "$script" 2>/dev/null || echo "$script")")" 2>/dev/null && pwd)"
+
+  local -a stacks=()
+  if [[ -d "$stacks_dir" ]]; then
+    for d in "$stacks_dir"/*/; do
+      local n; n="$(basename "$d")"
+      [[ "$n" == _* ]] && continue
+      [[ -f "$d/compose.yml" ]] && stacks+=("$n")
+    done
+  fi'
+    zsh_stacks_init='  # Dynamically discover stacks from the script location at completion time
+  local stacks_dir
+  stacks_dir="$(cd "$(dirname "$(realpath "$script" 2>/dev/null || echo "$script")")" 2>/dev/null && pwd)"
+
+  local -a stacks=()
+  if [[ -d "$stacks_dir" ]]; then
+    for d in "$stacks_dir"/*/; do
+      local n="${d:t}"
+      [[ "$n" == _* ]] && continue
+      [[ -f "${d}compose.yml" ]] && stacks+=("$n")
+    done
+  fi'
+  fi
+
   local content
   case "$shell" in
-    bash) content="$(_completion_bash)" ;;
-    zsh)  content="$(_completion_zsh)" ;;
+    bash) content="$(_completion_bash "$bash_stacks_init")" ;;
+    zsh)  content="$(_completion_zsh  "$zsh_stacks_init")" ;;
     *)    die "Unsupported shell: $shell  (bash|zsh)" ;;
   esac
 
@@ -1042,7 +1071,8 @@ ${BOLD}UTILITIES${RESET}
       --db postgres|mysql|mariadb   Add a database service
       --redis                        Add a Redis service
       --no-traefik                   Expose port instead of Traefik labels
-  ${CYAN}completion${RESET} bash|zsh [--install]  Generate/install shell completion
+  ${CYAN}completion${RESET} bash|zsh [--install] [--static]  Generate/install shell completion
+               --static   Bake current stack list in (no runtime discovery)
   ${CYAN}version${RESET}                    Print version
   ${CYAN}help${RESET}                       Show this help