QuarantineWriter 0.6.0 API

All Implemented Interfaces:
```
public final class QuarantineWriter

                    
```
Failed-row quarantine with redaction (HEL-236 scenario 6). Rejected rows are written under <prefix>/<runId>/ so audit evidence stays traceable to the run that produced it, and the columns the caller declares sensitive are REDACTED before any byte leaves the process: the stored value is sha256:<16 hex> — a stable fingerprint (equal values match across rows, supporting investigation) that cannot be reversed to the value.
Security invariants: keys carry only runId + counters (never row data), the summary object carries counts + the caller's reason string (never values), and redaction is applied per WRITE — there is no unredacted code path.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`public final class`	`QuarantineWriter.Receipt`

Field Summary

Fields
Modifier and Type	Field	Description
`private final String`	`runId`

Constructor Summary

Constructors
Constructor	Description
`QuarantineWriter(ObjectStore store, String prefix, String runId, Set<String> redactColumns, RowPartFormat format, Clock clock)`

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`final String`	`getRunId()`
`final QuarantineWriter.Receipt`	`write(Schema schema, List<Row> rows, String reason)`	Write one batch of rejected rows (redacted).
`final ObjectKey`	`writeSummary(String reason)`	Write the run summary (counts + reason — no row data).

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

QuarantineWriter

QuarantineWriter(ObjectStore store, String prefix, String runId, Set<String> redactColumns, RowPartFormat format, Clock clock)

Method Detail
- getRunId
```
 final String getRunId()
```
- write
```
 final QuarantineWriter.Receipt write(Schema schema, List<Row> rows, String reason)
```
  Write one batch of rejected rows (redacted). Returns where they landed.
- writeSummary
```
 final ObjectKey writeSummary(String reason)
```
  Write the run summary (counts + reason — no row data). Call once, last.