[#67] 메인 리드미에 라이브러리 설명을 추가한다

.agents/rules/general.md

@@ -11,7 +11,7 @@
 - Explicit type annotation only when required.
 - New Swift file header author as `opfic`.
 - Clear expression available case prefers `<` or `<=` over `>` or `>=`.
-- Public API change requires DocC documentation, public test coverage, and `README.md` or `README.ko.md` review.
+- Public API change requires DocC documentation, public test coverage, and `README.md` or `README.en.md` review.
 - `Sendable`, actor isolation, cancellation, and error mapping as explicit review points for concurrency changes.
 
 ## Documentation and response

.agents/rules/project-workflows.md

@@ -5,7 +5,7 @@
 | Change | Required checks |
 | --- | --- |
 | Swift source or test | `swift build`, `swift test`, changed-file SwiftLint when available |
-| Public API or DocC | `swift build`, `swift test`, `README.md` and `README.ko.md` review |
+| Public API or DocC | `swift build`, `swift test`, `README.md` and `README.en.md` review |
 | Package manifest | `swift build`, `swift test`, package dependency diff review |
 | AI workflow documents or agent TOML | Baseline diff, staged diff, untracked Markdown/TOML format checks, role-model-fallback checks |
 | CI workflow | YAML review and affected workflow check when available |

.agents/workflows.md

@@ -92,7 +92,7 @@ Non-trivial design and implementation work sequence:
 
 - Documentation Writer checks actual diff before PR or release text.
 - User text-only request as direct text output without file creation.
-- `README.md` and `README.ko.md` parity review for public API documentation.
+- `README.md` and `README.en.md` parity review for public API documentation.
 
 ## AI workflow maintenance
 

.gitignore

@@ -1,4 +1,6 @@
 .DS_Store
+*.drawio
+*.drawio.bkp
 .build/
 /Packages
 xcuserdata/