Add Context Studio Wizard — project scaffolding CLI

- wizard.sh: interactive bash wizard that scaffolds new CS projects
- lib/: utils, core install, project structure, workflow generation
- templates/: Dockerfile, devcontainer.json, agent presets (minimal/standard), system.json, roles, hook rules
- README: setup, usage, mobility workflow

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

lib/utils.sh

@@ -0,0 +1,73 @@
+#!/usr/bin/env bash
+# utils.sh — colors, prompts, helpers
+
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+CYAN='\033[0;36m'
+BOLD='\033[1m'
+RESET='\033[0m'
+
+info()    { echo -e "${CYAN}${BOLD}[info]${RESET}  $*"; }
+success() { echo -e "${GREEN}${BOLD}[ok]${RESET}    $*"; }
+warn()    { echo -e "${YELLOW}${BOLD}[warn]${RESET}  $*"; }
+error()   { echo -e "${RED}${BOLD}[error]${RESET} $*" >&2; }
+die()     { error "$*"; exit 1; }
+header()  { echo -e "\n${BOLD}${CYAN}━━━  $*  ━━━${RESET}\n"; }
+
+# ask VAR "prompt" "default"
+ask() {
+    local var="$1" prompt="$2" default="$3"
+    if [[ -n "$default" ]]; then
+        echo -ne "${BOLD}${prompt}${RESET} ${CYAN}[${default}]${RESET}: "
+    else
+        echo -ne "${BOLD}${prompt}${RESET}: "
+    fi
+    read -r input
+    if [[ -z "$input" && -n "$default" ]]; then
+        eval "$var=\"$default\""
+    else
+        eval "$var=\"$input\""
+    fi
+}
+
+# ask_yn VAR "prompt" "y|n"
+ask_yn() {
+    local var="$1" prompt="$2" default="$3"
+    local options
+    if [[ "$default" == "y" ]]; then options="Y/n"; else options="y/N"; fi
+    echo -ne "${BOLD}${prompt}${RESET} ${CYAN}[${options}]${RESET}: "
+    read -r input
+    input="${input:-$default}"
+    if [[ "$input" =~ ^[Yy]$ ]]; then
+        eval "$var=y"
+    else
+        eval "$var=n"
+    fi
+}
+
+# ask_choice VAR "prompt" option1 option2 ...
+ask_choice() {
+    local var="$1" prompt="$2"; shift 2
+    local options=("$@")
+    echo -e "${BOLD}${prompt}${RESET}"
+    for i in "${!options[@]}"; do
+        echo -e "  ${CYAN}$((i+1))${RESET}) ${options[$i]}"
+    done
+    echo -ne "Choice ${CYAN}[1]${RESET}: "
+    read -r input
+    input="${input:-1}"
+    if [[ "$input" =~ ^[0-9]+$ ]] && (( input >= 1 && input <= ${#options[@]} )); then
+        eval "$var=\"${options[$((input-1))]}\""
+    else
+        eval "$var=\"${options[0]}\""
+    fi
+}
+
+require_cmd() {
+    command -v "$1" &>/dev/null || die "Required command not found: $1"
+}
+
+slugify() {
+    echo "$1" | tr '[:upper:]' '[:lower:]' | sed 's/[^a-z0-9]/-/g' | sed 's/-\+/-/g' | sed 's/^-//;s/-$//'
+}