feat: add momentry_playground binary for development

- Add separate momentry_playground binary with distinct configuration
- Production (momentry): Port 3002, Redis prefix 'momentry:'
- Development (momentry_playground): Port 3003, Redis prefix 'momentry_dev:'
- Add SERVER_PORT and REDIS_KEY_PREFIX config via environment variables
- Replace all hardcoded Redis key prefixes with configurable values
- Create .env.development for playground environment settings
- Update .env with production defaults
- Add dotenv dependency for environment file loading

Configuration isolation allows running both binaries simultaneously
without port conflicts or Redis key collisions.

scripts/check_config.sh

@@ -0,0 +1,96 @@
+#!/bin/bash
+# Config Check Script
+# 驗證配置是否正確設置
+
+set -e
+
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m'
+
+echo "=========================================="
+echo "Momentry Core 配置檢查"
+echo "=========================================="
+
+# 檢查 .env 文件
+if [ -f ".env" ]; then
+    echo -e "${GREEN}✅ .env 文件存在${NC}"
+else
+    if [ -f ".env.example" ]; then
+        echo -e "${YELLOW}⚠️  .env 文件不存在，使用模板創建...${NC}"
+        cp .env.example .env
+        echo -e "${YELLOW}⚠️  已創建 .env，請編輯並設置正確的憑據${NC}"
+    else
+        echo -e "${RED}❌ .env 和 .env.example 都不存在${NC}"
+    fi
+fi
+
+# 檢查必要配置
+check_var() {
+    local var_name="$1"
+    local description="$2"
+    
+    if grep -q "^${var_name}=" .env 2>/dev/null; then
+        echo -e "${GREEN}✅ ${var_name}${NC} - $description"
+    else
+        echo -e "${YELLOW}⚠️  ${var_name}${NC} - $description (使用默認值)"
+    fi
+}
+
+if [ -f ".env" ]; then
+    echo ""
+    echo "檢查環境變數..."
+    check_var "DATABASE_URL" "PostgreSQL 連接"
+    check_var "REDIS_URL" "Redis 連接"
+    check_var "REDIS_PASSWORD" "Redis 密碼"
+    check_var "MOMENTRY_OUTPUT_DIR" "輸出目錄"
+    check_var "MOMENTRY_PYTHON_PATH" "Python 路徑"
+    check_var "RUST_LOG" "日誌級別"
+fi
+
+# 檢查目錄權限
+echo ""
+echo "檢查目錄權限..."
+check_dir() {
+    local dir="$1"
+    local description="$2"
+    
+    if [ -d "$dir" ]; then
+        if [ -w "$dir" ]; then
+            echo -e "${GREEN}✅ ${dir}${NC} - $description (可寫)"
+        else
+            echo -e "${RED}❌ ${dir}${NC} - $description (不可寫)"
+        fi
+    else
+        echo -e "${YELLOW}⚠️  ${dir}${NC} - $description (目錄不存在)"
+    fi
+}
+
+check_dir "/Users/accusys/momentry/output" "輸出目錄"
+check_dir "/Users/accusys/momentry/backup" "備份目錄"
+
+# 檢查 Python
+echo ""
+echo "檢查 Python..."
+if command -v python3.11 &> /dev/null; then
+    version=$(python3.11 --version 2>&1)
+    echo -e "${GREEN}✅ Python 3.11 可用${NC} ($version)"
+else
+    echo -e "${RED}❌ Python 3.11 不可用${NC}"
+fi
+
+# 檢查 Rust
+echo ""
+echo "檢查 Rust..."
+if command -v cargo &> /dev/null; then
+    version=$(cargo --version 2>&1)
+    echo -e "${GREEN}✅ Cargo 可用${NC} ($version)"
+else
+    echo -e "${RED}❌ Cargo 不可用${NC}"
+fi
+
+echo ""
+echo "=========================================="
+echo "配置檢查完成"
+echo "=========================================="