Add: Korean comments to habit_bot.py and stock_tracker.py

- Added bilingual headers with Korean descriptions
- Added Korean section comments for all major functions
- All documentation now bilingual (EN/KO)

Files updated:
- habit_bot.py
- stock_tracker.py

Added comments in Korean for:
- Configuration section
- Data models
- Habit management
- Food logging
- URL summarization
- Command handlers

stock_tracker.py

@@ -1,4 +1,13 @@
 #!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Stock #!/usr/bin/env python3 Crypto Portfolio Tracker / 주식 및 암호화폐 포트폴리오 트래커
+# 기능:
+# - 주식 및 암호화폐 가격 추적 / Track stocks and crypto prices
+# - 포트폴리오 P#!/usr/bin/env python3L 계산 / Calculate portfolio P#!/usr/bin/env python3L
+# - 시장 지수 비교 / Compare against market indices
+# - 투자 권고사항 생성 / Generate investment recommendations
+# - 일일/주간 리포트 / Daily/weekly reports
 """
 Stock & Crypto Portfolio Tracker
 Features:
@@ -79,7 +88,7 @@ class StockTracker:
         self.positions = self._load_positions()
         self.prices = self._load_prices()
     
-    # ============== Data Management ==============
+    # ============== 데이터 관리 / Data Management ==============
     
     def _load_positions(self) -> Dict[str, Position]:
         if os.path.exists(PORTFOLIO_FILE):
@@ -102,7 +111,7 @@ class StockTracker:
         with open(PRICES_FILE, 'w') as f:
             json.dump({k: asdict(v) for k, v in self.prices.items()}, f, indent=2)
     
-    # ============== Portfolio Management ==============
+    # ============== 포트폴리오 관리 / Portfolio Management ==============
     
     def add_position(self, symbol: str, asset_type: str, quantity: float, 
                     avg_cost: float, entry_date: str = "", notes: str = "") -> bool:
@@ -135,7 +144,7 @@ class StockTracker:
     def get_positions(self) -> List[Position]:
         return list(self.positions.values())
     
-    # ============== Price Fetching ==============
+    # ============== 가격 가져오기 / Price Fetching ==============
     
     def fetch_price(self, symbol: str) -> Optional[PriceData]:
         """Fetch current price for a symbol using yfinance"""
@@ -188,7 +197,7 @@ class StockTracker:
         self._save_prices()
         return self.prices
     
-    # ============== Performance Calculation ==============
+    # ============== 성과 계산 / Performance Calculation ==============
     
     def calculate_portfolio_summary(self) -> PortfolioSummary:
         """Calculate portfolio summary with P&L"""
@@ -291,7 +300,7 @@ class StockTracker:
             return ((price.current_price - pos.avg_cost) / pos.avg_cost) * 100
         return 0
     
-    # ============== Crypto & Market Data ==============
+    # ============== 암호화폐 및 시장 데이터 / Crypto & Market Data ==============
     
     def get_crypto_price(self, symbol: str = "BTC") -> Optional[PriceData]:
         """Fetch cryptocurrency price using yfinance"""
@@ -359,7 +368,7 @@ class StockTracker:
         
         return result
     
-    # ============== Reporting ==============
+    # ============== 리포팅 / Reporting ==============
     
     def generate_daily_report(self) -> str:
         """Generate daily portfolio report"""