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

.claude/commands/snippets/create-snippet.md

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+Title: Create Snippet Prompt
+Description: Generates a snippet template based on provided example code. Template contains instructions and example code. Provide more examples for coverage if needed. Don't include obvious steps you already know like imports.
+Body:
+
+### Instructions
+
+Title: ${1:Create ${2:Component}}
+Description: Generates a template for ${3:a ${2}}
+Rules:
+
+- ${4:Add relevant rules here}
+- Keep rules concise and specific to the snippet
+- Include any critical requirements or conventions
+- Add validation rules if applicable
+
+Body:
+
+${5:$TM_SELECTED_TEXT}
+
+### Example
+
+Title: ${1}
+Description: ${3}
+Rules:
+
+- ${4}
+- Example rule 2
+- Example rule 3
+
+Body:
+
+${5}