feat: add summarize command for brownfield(existed) project analysis

README.md

@@ -160,6 +160,7 @@ The `specify` command supports the following options:
 | Command     | Description                                                    |
 |-------------|----------------------------------------------------------------|
 | `init`      | Initialize a new Specify project from the latest template      |
+| `summarize` | Generate a comprehensive summary of an existing project's technology stack, architecture, and code conventions |
 | `check`     | Check for installed tools (`git`, `claude`, `gemini`, `code`/`code-insiders`, `cursor-agent`, `windsurf`, `qwen`, `opencode`, `codex`) |
 
 ### `specify init` Arguments & Options
@@ -219,6 +220,9 @@ specify init my-project --ai claude --github-token ghp_your_token_here
 
 # Check system requirements
 specify check
+
+# Analyze existing project (for brownfield/existing codebases)
+specify summarize
 ```
 
 ### Available Slash Commands
@@ -243,6 +247,7 @@ Additional commands for enhanced quality and validation:
 
 | Command              | Description                                                           |
 |----------------------|-----------------------------------------------------------------------|
+| `/speckit.summarize` | Generate comprehensive summary of existing project (technology stack, architecture, code conventions) - ideal for brownfield projects |
 | `/speckit.clarify`   | Clarify underspecified areas (recommended before `/speckit.plan`; formerly `/quizme`) |
 | `/speckit.analyze`   | Cross-artifact consistency & coverage analysis (run after `/speckit.tasks`, before `/speckit.implement`) |
 | `/speckit.checklist` | Generate custom quality checklists that validate requirements completeness, clarity, and consistency (like "unit tests for English") |

scripts/bash/generate-project-summary.sh

@@ -0,0 +1,255 @@
+#!/usr/bin/env bash
+set -e
+
+# Source common utilities
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "$SCRIPT_DIR/common.sh"
+
+# Parse command line arguments
+JSON_OUTPUT=false
+
+while [[ $# -gt 0 ]]; do
+	case $1 in
+		--json)
+			JSON_OUTPUT=true
+			shift
+			;;
+		*)
+			shift
+			;;
+	esac
+done
+
+# Get repository root
+REPO_ROOT=$(get_repo_root)
+
+# Initialize arrays for discovered data
+declare -a TECH_FILES=()
+declare -a DIRECTORIES=()
+declare -a LANGUAGES=()
+
+# Detect configuration files for different languages/frameworks
+detect_config_files() {
+	local root="$1"
+
+	# JavaScript/TypeScript
+	[[ -f "$root/package.json" ]] && TECH_FILES+=("package.json") && LANGUAGES+=("JavaScript/TypeScript")
+	[[ -f "$root/tsconfig.json" ]] && TECH_FILES+=("tsconfig.json")
+	[[ -f "$root/yarn.lock" ]] && TECH_FILES+=("yarn.lock")
+	[[ -f "$root/pnpm-lock.yaml" ]] && TECH_FILES+=("pnpm-lock.yaml")
+	[[ -f "$root/bun.lockb" ]] && TECH_FILES+=("bun.lockb")
+
+	# Python
+	[[ -f "$root/requirements.txt" ]] && TECH_FILES+=("requirements.txt") && LANGUAGES+=("Python")
+	[[ -f "$root/pyproject.toml" ]] && TECH_FILES+=("pyproject.toml") && LANGUAGES+=("Python")
+	[[ -f "$root/setup.py" ]] && TECH_FILES+=("setup.py") && LANGUAGES+=("Python")
+	[[ -f "$root/Pipfile" ]] && TECH_FILES+=("Pipfile") && LANGUAGES+=("Python")
+	[[ -f "$root/poetry.lock" ]] && TECH_FILES+=("poetry.lock")
+
+	# Go
+	[[ -f "$root/go.mod" ]] && TECH_FILES+=("go.mod") && LANGUAGES+=("Go")
+	[[ -f "$root/go.sum" ]] && TECH_FILES+=("go.sum")
+
+	# Rust
+	[[ -f "$root/Cargo.toml" ]] && TECH_FILES+=("Cargo.toml") && LANGUAGES+=("Rust")
+	[[ -f "$root/Cargo.lock" ]] && TECH_FILES+=("Cargo.lock")
+
+	# Java
+	[[ -f "$root/pom.xml" ]] && TECH_FILES+=("pom.xml") && LANGUAGES+=("Java")
+	[[ -f "$root/build.gradle" ]] && TECH_FILES+=("build.gradle") && LANGUAGES+=("Java/Kotlin")
+	[[ -f "$root/build.gradle.kts" ]] && TECH_FILES+=("build.gradle.kts") && LANGUAGES+=("Kotlin")
+
+	# Ruby
+	[[ -f "$root/Gemfile" ]] && TECH_FILES+=("Gemfile") && LANGUAGES+=("Ruby")
+	[[ -f "$root/Gemfile.lock" ]] && TECH_FILES+=("Gemfile.lock")
+
+	# PHP
+	[[ -f "$root/composer.json" ]] && TECH_FILES+=("composer.json") && LANGUAGES+=("PHP")
+	[[ -f "$root/composer.lock" ]] && TECH_FILES+=("composer.lock")
+
+	# C#/.NET
+	find "$root" -maxdepth 2 \( -name "*.csproj" -o -name "*.fsproj" -o -name "*.vbproj" \) | while read -r proj; do
+		TECH_FILES+=("$(basename "$proj")")
+		LANGUAGES+=("C#/.NET")
+	done
+
+	# Swift
+	[[ -f "$root/Package.swift" ]] && TECH_FILES+=("Package.swift") && LANGUAGES+=("Swift")
+
+	# Elixir
+	[[ -f "$root/mix.exs" ]] && TECH_FILES+=("mix.exs") && LANGUAGES+=("Elixir")
+
+	# C/C++
+	[[ -f "$root/CMakeLists.txt" ]] && TECH_FILES+=("CMakeLists.txt") && LANGUAGES+=("C/C++")
+	[[ -f "$root/Makefile" ]] && TECH_FILES+=("Makefile")
+
+	# Code style/config files
+	[[ -f "$root/.editorconfig" ]] && TECH_FILES+=(".editorconfig")
+	[[ -f "$root/.prettierrc" ]] && TECH_FILES+=(".prettierrc")
+	[[ -f "$root/.prettierrc.json" ]] && TECH_FILES+=(".prettierrc.json")
+	[[ -f "$root/.eslintrc" ]] && TECH_FILES+=(".eslintrc")
+	[[ -f "$root/.eslintrc.json" ]] && TECH_FILES+=(".eslintrc.json")
+	[[ -f "$root/rustfmt.toml" ]] && TECH_FILES+=("rustfmt.toml")
+}
+
+# Detect key directories
+detect_directories() {
+	local root="$1"
+
+	# Source directories
+	[[ -d "$root/src" ]] && DIRECTORIES+=("src")
+	[[ -d "$root/lib" ]] && DIRECTORIES+=("lib")
+	[[ -d "$root/app" ]] && DIRECTORIES+=("app")
+	[[ -d "$root/pkg" ]] && DIRECTORIES+=("pkg")
+	[[ -d "$root/internal" ]] && DIRECTORIES+=("internal")
+	[[ -d "$root/cmd" ]] && DIRECTORIES+=("cmd")
+
+	# Test directories
+	[[ -d "$root/test" ]] && DIRECTORIES+=("test")
+	[[ -d "$root/tests" ]] && DIRECTORIES+=("tests")
+	[[ -d "$root/__tests__" ]] && DIRECTORIES+=("__tests__")
+	[[ -d "$root/spec" ]] && DIRECTORIES+=("spec")
+
+	# Documentation
+	[[ -d "$root/docs" ]] && DIRECTORIES+=("docs")
+	[[ -d "$root/documentation" ]] && DIRECTORIES+=("documentation")
+
+	# Configuration
+	[[ -d "$root/config" ]] && DIRECTORIES+=("config")
+	[[ -d "$root/conf" ]] && DIRECTORIES+=("conf")
+	[[ -d "$root/settings" ]] && DIRECTORIES+=("settings")
+
+	# Frontend/Backend split
+	[[ -d "$root/frontend" ]] && DIRECTORIES+=("frontend")
+	[[ -d "$root/client" ]] && DIRECTORIES+=("client")
+	[[ -d "$root/web" ]] && DIRECTORIES+=("web")
+	[[ -d "$root/backend" ]] && DIRECTORIES+=("backend")
+	[[ -d "$root/server" ]] && DIRECTORIES+=("server")
+	[[ -d "$root/api" ]] && DIRECTORIES+=("api")
+
+	# Database
+	[[ -d "$root/migrations" ]] && DIRECTORIES+=("migrations")
+	[[ -d "$root/models" ]] && DIRECTORIES+=("models")
+	[[ -d "$root/schemas" ]] && DIRECTORIES+=("schemas")
+
+	# Monorepo
+	[[ -d "$root/packages" ]] && DIRECTORIES+=("packages")
+	[[ -d "$root/apps" ]] && DIRECTORIES+=("apps")
+	[[ -d "$root/services" ]] && DIRECTORIES+=("services")
+
+	# Public/Static
+	[[ -d "$root/public" ]] && DIRECTORIES+=("public")
+	[[ -d "$root/static" ]] && DIRECTORIES+=("static")
+	[[ -d "$root/assets" ]] && DIRECTORIES+=("assets")
+
+	# Build/Dist
+	[[ -d "$root/build" ]] && DIRECTORIES+=("build")
+	[[ -d "$root/dist" ]] && DIRECTORIES+=("dist")
+	[[ -d "$root/target" ]] && DIRECTORIES+=("target")
+}
+
+# Detect project type
+detect_project_type() {
+	local type="unknown"
+
+	# Monorepo indicators
+	if [[ -d "$REPO_ROOT/packages" ]] || [[ -d "$REPO_ROOT/apps" ]] || [[ -d "$REPO_ROOT/services" ]]; then
+		type="monorepo"
+	# Frontend + Backend split
+	elif [[ -d "$REPO_ROOT/frontend" ]] && [[ -d "$REPO_ROOT/backend" ]]; then
+		type="fullstack-split"
+	elif [[ -d "$REPO_ROOT/client" ]] && [[ -d "$REPO_ROOT/server" ]]; then
+		type="fullstack-split"
+	# Web application
+	elif [[ -f "$REPO_ROOT/package.json" ]] && grep -q "react\|vue\|angular\|svelte\|next\|nuxt" "$REPO_ROOT/package.json" 2>/dev/null; then
+		type="web-frontend"
+	# API/Backend
+	elif [[ -d "$REPO_ROOT/api" ]] || [[ -d "$REPO_ROOT/server" ]]; then
+		type="backend-api"
+	# CLI tool
+	elif [[ -d "$REPO_ROOT/cmd" ]] || ( [[ -f "$REPO_ROOT/package.json" ]] && grep -q "\"bin\":" "$REPO_ROOT/package.json" 2>/dev/null ); then
+		type="cli-tool"
+	# Library
+	elif [[ -d "$REPO_ROOT/lib" ]] || ( [[ -f "$REPO_ROOT/Cargo.toml" ]] && grep -q "\[lib\]" "$REPO_ROOT/Cargo.toml" 2>/dev/null ); then
+		type="library"
+	# Generic application
+	elif [[ -d "$REPO_ROOT/src" ]]; then
+		type="application"
+	fi
+
+	echo "$type"
+}
+
+# Run detection
+detect_config_files "$REPO_ROOT"
+detect_directories "$REPO_ROOT"
+PROJECT_TYPE=$(detect_project_type)
+
+# Deduplicate languages array
+if [ ${#LANGUAGES[@]} -eq 0 ]; then
+	UNIQUE_LANGUAGES=()
+else
+	UNIQUE_LANGUAGES=($(printf '%s\n' "${LANGUAGES[@]}" | sort -u))
+fi
+
+# Output as JSON if requested
+if [ "$JSON_OUTPUT" = true ]; then
+	# Convert arrays to JSON arrays (handle empty arrays)
+	if [ ${#TECH_FILES[@]} -eq 0 ]; then
+		tech_files_json="[]"
+	else
+		tech_files_json=$(printf '%s\n' "${TECH_FILES[@]}" | jq -R . | jq -s .)
+	fi
+
+	if [ ${#DIRECTORIES[@]} -eq 0 ]; then
+		directories_json="[]"
+	else
+		directories_json=$(printf '%s\n' "${DIRECTORIES[@]}" | jq -R . | jq -s .)
+	fi
+
+	if [ ${#UNIQUE_LANGUAGES[@]} -eq 0 ]; then
+		languages_json="[]"
+	else
+		languages_json=$(printf '%s\n' "${UNIQUE_LANGUAGES[@]}" | jq -R . | jq -s .)
+	fi
+
+	# Output JSON
+	jq -n \
+		--arg repo_root "$REPO_ROOT" \
+		--arg project_type "$PROJECT_TYPE" \
+		--argjson tech_files "$tech_files_json" \
+		--argjson directories "$directories_json" \
+		--argjson languages "$languages_json" \
+		'{
+			REPO_ROOT: $repo_root,
+			PROJECT_TYPE: $project_type,
+			TECH_FILES: $tech_files,
+			DIRECTORIES: $directories,
+			LANGUAGES: $languages
+		}'
+else
+	# Human-readable output
+	echo "Repository Root: $REPO_ROOT"
+	echo "Project Type: $PROJECT_TYPE"
+	echo ""
+	echo "Languages:"
+	if [ ${#UNIQUE_LANGUAGES[@]} -gt 0 ]; then
+		printf '  - %s\n' "${UNIQUE_LANGUAGES[@]}"
+	else
+		echo "  (none detected)"
+	fi
+	echo ""
+	echo "Configuration Files:"
+	if [ ${#TECH_FILES[@]} -gt 0 ]; then
+		printf '  - %s\n' "${TECH_FILES[@]}"
+	else
+		echo "  (none detected)"
+	fi
+	echo ""
+	echo "Key Directories:"
+	if [ ${#DIRECTORIES[@]} -gt 0 ]; then
+		printf '  - %s\n' "${DIRECTORIES[@]}"
+	else
+		echo "  (none detected)"
+	fi
+fi