Redesign wizard UI with gum (charmbracelet)

- Bootstrap gum automatically on first run (Arch/Debian/RHEL/Fedora/SUSE)
- utils.sh: replace all bash color helpers with gum equivalents
  - gum input for text prompts (with value pre-fill for defaults)
  - gum choose for selection menus
  - gum confirm for yes/no
  - gum spin for long-running operations
  - gum style/log for output (catppuccin mocha palette)
  - gum style for banners and summary box
- core.sh: spinner on git clone/pull
- workflow.sh: spinner on git clone
- prereqs.sh: spinner on package installs
- wizard.sh: double-border welcome banner, rounded summary box,
  success banner with next-steps panel

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

lib/project.sh

@@ -7,74 +7,24 @@ create_project_structure() {
     local project_dir="$1"
     local project_name="$2"
 
-    info "Creating project structure at $project_dir..."
-
     mkdir -p "$project_dir/src"
     mkdir -p "$project_dir/.devcontainer"
 
-    # .gitignore
-    cat > "$project_dir/.gitignore" <<'EOF'
-# Dependencies
+    cat > "$project_dir/.gitignore" <<'GITIGNORE'
 node_modules/
-.pnp/
-.pnp.js
-
-# Build outputs
 dist/
 build/
 *.AppImage
 *.dmg
 *.exe
-
-# Environment
 .env
 .env.local
-.env.*.local
-
-# Runtime data
 workflow/data/registry.db
 workflow/users/*/session-history/
-
-# Logs
 *.log
-npm-debug.log*
-
-# OS
 .DS_Store
 Thumbs.db
-EOF
-
-    # README
-    cat > "$project_dir/README.md" <<EOF
-# $project_name
-
-## Quick Start
-
-### First time setup
-\`\`\`bash
-# Open in devcontainer (VS Code)
-code .
-# → Reopen in Container
-
-# Or via CLI
-docker build -t $( slugify "$project_name" ) .devcontainer/
-docker run -it --rm \\
-  -v "\$(pwd)":/workspace \\
-  -v "\$HOME/.context-studio/core":/opt/context-studio/core \\
-  -e ANTHROPIC_API_KEY="\$ANTHROPIC_API_KEY" \\
-  $( slugify "$project_name" ) bash
-\`\`\`
-
-### Start Context Studio
-\`\`\`bash
-CS_WORKFLOW_DIR=/workspace/workflow node /opt/context-studio/core/core/start.js
-\`\`\`
-
-### Start headless (no Electron UI)
-\`\`\`bash
-CS_WORKFLOW_DIR=/workspace/workflow node /opt/context-studio/core/core/start.js --ui-mode=headless
-\`\`\`
-EOF
+GITIGNORE
 
     success "Project structure created"
 }
@@ -85,17 +35,11 @@ create_devcontainer() {
     local slug
     slug="$(slugify "$project_name")"
 
-    info "Generating devcontainer config..."
-
-    # Dockerfile
-    sed "s/{{PROJECT_SLUG}}/$slug/g" \
-        "$WIZARD_DIR/templates/Dockerfile" \
-        > "$project_dir/.devcontainer/Dockerfile"
-
-    # devcontainer.json
     sed "s/{{PROJECT_NAME}}/$project_name/g; s/{{PROJECT_SLUG}}/$slug/g" \
         "$WIZARD_DIR/templates/devcontainer.json" \
         > "$project_dir/.devcontainer/devcontainer.json"
 
-    success "Devcontainer config written to $project_dir/.devcontainer/"
+    cp "$WIZARD_DIR/templates/Dockerfile" "$project_dir/.devcontainer/Dockerfile"
+
+    success "Devcontainer config written"
 }