# 능력 리포트가 이 능력에 매긴 등급
JpaPlatformAutoConfiguration.java:57:        CapabilitySupport.stable(JpaCapability.COMPLETION_EVIDENCE),
JpaCapability.java:16:  COMPLETION_EVIDENCE("transaction.completion-evidence"),

# 매니저의 javadoc 이 주장하는 것
11:/**
12: * A {@link JpaTransactionManager} that records how far each transaction got, so a commit failure
13: * can be classified as "rolled back" or "outcome unknown" instead of guessed (design §17.2).
14: *
15: * <p>The phase is marked {@link TransactionCompletionEvidence#COMMITTING} immediately before the
16: * provider commit and never after. That ordering is the whole mechanism: if the JVM, the network,
17: * or the server dies inside {@code super.doCommit}, the last thing written is "we asked, we do not
18: * know", which is exactly the state that must not be mistaken for a rollback.
19: *
20: * <p>Evidence is cleared on every path — commit success, commit failure, rollback, and cleanup. A
21: * frame left behind on a pooled thread would attach this transaction's phase to the next unrelated
22: * unit of work that thread picks up.
23: */
# 같은 파일의 코드가 하는 것
49:  @Override
50:  protected void doCommit(DefaultTransactionStatus status) {
51:    TransactionEvidenceContext.mark(TransactionCompletionEvidence.COMMITTING);
52:    try {
53:      super.doCommit(status);
54:      TransactionEvidenceContext.mark(TransactionCompletionEvidence.COMMITTED);
55:    } catch (RuntimeException failure) {
56:      TransactionEvidenceContext.mark(TransactionCompletionEvidence.UNKNOWN);
57:      throw classifier.translateCommitFailure(failure);
58:    } finally {
59:      // Deliberately not cleared here. The executor's scope owns the frame's lifetime; a second
60:      // owner popping was how an inner REQUIRES_NEW transaction deleted its outer frame.
61:    }
62:  }
63:
64:  @Override
65:  protected void doRollback(DefaultTransactionStatus status) {
66:    try {
67:      super.doRollback(status);
68:      TransactionEvidenceContext.mark(TransactionCompletionEvidence.ROLLED_BACK);
69:    } finally {
70:      // Deliberately not cleared here. The executor's scope owns the frame's lifetime; a second
71:      // owner popping was how an inner REQUIRES_NEW transaction deleted its outer frame.
72:    }
73:  }

# 그 매니저를 만드는 코드
app-bootstrap/src/main/java/dev/caskeleton/bootstrap/autoconfigure/jpa/JpaTransactionAutoConfiguration.java:55:   * EvidenceAwareJpaTransactionManager.standard(entityManagerFactory, clock)}. The composition root
adapter/outbound/persistence-jpa/src/main/java/dev/caskeleton/adapter/outbound/persistence/transaction/EvidenceAwareJpaTransactionManager.java:39:    return new EvidenceAwareJpaTransactionManager(
#   자기 파일과 javadoc 을 뺀 생성 지점: 0
#   FQCN 이 설정 리소스에 등장하는 곳: 0
#   그 클래스를 상속하는 코드: 0

# 트랜잭션 매니저 빈을 등록하는 코드 (애너테이션 다음 여섯 줄까지 본다)
#   main: 0
#   test: 1
JpaPlatformRuntimeAutoConfigurationTest.java-257-    PlatformTransactionManager transactionManager() {