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Add library-management module: console app evolved into a Spring Boot 4 REST API

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Stage 2 console classes and the shared LoanPolicy, then a Spring Boot 4.1.2 + JPA API
(H2, @Version optimistic locking, problem+json errors). Tests write output/ transcripts
while asserting the same numbers; scripts regenerate everything.

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_017ic4b4DPL6dtpFg4U4LHc2
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Claude
2026-11-14 21:21:16 +05:30
parent b9aeb78b24
commit 26ece9cc9b
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@@ -21,6 +21,7 @@ One module per article. This repository currently holds:
| [`dynamic-programming`](dynamic-programming/) | Dynamic Programming in Java for Beginners: Memoization vs Tabulation (10 Classic Problems) | this commit |
| [`fresher-qa`](fresher-qa/) | Top 50 Java Interview Questions for Freshers (2026) with Simple Answers | this commit |
| [`stack-queue`](stack-queue/) | Stack and Queue Problems in Java: Balanced Parentheses, Next Greater Element, Min Stack | this commit |
| [`library-management`](library-management/) | Library Management System in Java: Console Version to Spring Boot REST API | this commit |
## `collections` module