docs: 기본 파일 구조, .gitignore, CLAUDE.md, README.md, 및 작업 관리 시스템을 위한 설정 파일 추가

.claude/commands/task/update-task.md

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+---
+allowed-tools: mcp__taskmaster-ai__update, mcp__taskmaster-ai__update_task, mcp__taskmaster-ai__update_subtask, mcp__taskmaster-ai__get_tasks
+description: Update tasks based on implementation changes
+---
+
+# Update Tasks
+
+**User Request:** $ARGUMENTS
+
+## Goal
+
+Update tasks when implementation changes from the original plan. Just tell me what changed and I'll update the relevant tasks.
+
+## What You Can Say
+
+```
+"We're using MongoDB instead of PostgreSQL"
+"Update task 5 to use OAuth instead of JWT"
+"All tasks from 10 onwards should use the new API structure"
+"Task 7.2 needs a note about the Redis caching we added"
+```
+
+## How It Works
+
+Based on what you tell me (User Request), I'll:
+
+1. **Understand the change** from your description
+2. **Find affected tasks** automatically or use the ones you specify
+3. **Update them** with the new approach
+4. **Confirm** what was updated