fix(playwright): resolve browser dependencies without sudo & cleanup unused files

- Copy necessary shared libraries (libnss, libasound, libsoftokn, etc.) from docker to libs/ to support headless chromium execution on host
- Update server and crawler configuration to support custom DB_PORT (3307)
- Remove unused databases, lockfiles, standalone helper scripts, and documentation files as requested

server.py

@@ -2,6 +2,7 @@ import os
 import sys
 import asyncio
 import pymysql
+from dotenv import load_dotenv
 from fastapi import FastAPI, Request
 from fastapi.middleware.cors import CORSMiddleware
 from fastapi.responses import StreamingResponse, FileResponse
@@ -16,6 +17,7 @@ from project_service import ProjectService
 from analysis_service import AnalysisService
 
 # --- 환경 설정 ---
+load_dotenv()
 os.environ["PYTHONIOENCODING"] = "utf-8"
 TESSDATA_PREFIX = os.getenv("TESSDATA_PREFIX", r"C:\Users\User\AppData\Local\Programs\Tesseract-OCR\tessdata")
 os.environ["TESSDATA_PREFIX"] = TESSDATA_PREFIX
@@ -41,6 +43,7 @@ def get_db_connection():
     """MySQL 데이터베이스 연결을 반환"""
     return pymysql.connect(
         host=os.getenv('DB_HOST', 'localhost'),
+        port=int(os.getenv('DB_PORT', 3306)),
         user=os.getenv('DB_USER', 'root'),
         password=os.getenv('DB_PASSWORD', '45278434'),
         database=os.getenv('DB_NAME', 'PM_proto'),