Addresses Markus B1+B2, Nora C1+C4+C5, Tobias #1, Sara B1+B2+C2, Elicit S2+C4
from the cycle 1 review on PR #331.
Audit / version trail
applyBulkEditToDocument now takes actorId, calls
documentVersionService.recordVersion(saved), and emits an
AuditKind.METADATA_UPDATED event tagged source=BULK_EDIT — restoring parity
with the single-doc updateDocument path.
Caps
/api/documents/batch-metadata: 500-ID cap (matches PATCH cap)
/api/documents/ids: 5000 result cap with BULK_EDIT_TOO_MANY_IDS on overflow
Permission tightening
/api/documents/ids re-gated WRITE_ALL — its only consumer is the bulk-edit
fast path (least-privilege per Elicit S2 + Nora's defence-in-depth).
Audit log
/ids and /batch-metadata now emit one log.info per call, mirroring the
quickUpload + bulkEdit format.
Robustness
Duplicates in PATCH documentIds are de-duplicated via LinkedHashSet so a
double-clicked "Alle X editieren" cannot inflate the updated count.
log.warn lines that interpolate Throwable.getMessage() now run through a
CRLF-strip helper (CWE-117).
Tests added
applyBulkEditToDocument_recordsVersion_andLogsAuditEvent_taggedSourceBulkEdit
patchBulk_acceptsExactly500Ids_atTheCap (off-by-one fence)
patchBulk_dedupesDuplicateDocumentIds_doesNotInflateUpdatedCount
getDocumentIds_returns403_forUserWithoutWriteAll
getDocumentIds_returns400_whenResultExceedsFilterCap
batchMetadata_returns403_forUserWithoutReadAll
batchMetadata_returns400_whenIdsExceedsCap
All 231 backend tests green.
Refs #225, PR #331
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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