Fix: Korean bilingual headers in habit_bot.py and stock_tracker.py

- Fixed headers to be properly bilingual (EN/KO)
- Added Korean descriptions for all features

Files:
- habit_bot.py
- stock_tracker.py

habit_bot.py

@@ -1,8 +1,7 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 #
-# Habit #!/usr/bin/env python3 Diet Telegram Bot with URL Summarization
-# URL 요약을 포함한 습관 및 식단 Telegram 봇
+# Habit & Diet Telegram Bot with URL Summarization / URL 요약을 포함한 습관 및 식단 Telegram 봇
 #
 # 기능 / Features:
 # - 습관 추적 (/habit add, log, list) / Habit tracking
@@ -11,16 +10,7 @@
 # - URL 요약 (YouTube/Blog/News) / URL summarization
 # - 케토 다이어트 가이드라인 / Keto diet guidelines
 """
-Unified Telegram Bot - Habit, Diet, URL Summarizer
-Features:
-- YouTube/Blog/News summarization (EN/KO)
-- Habit logging
-- Diet/food logging with photo analysis
-- Morning briefing
-- Night debrief + motivation
-"""
 
-import os
 import sys
 import json
 import re