makefile: increase s390x QEMU test timeout

db: use full path when stat-ing obsolete MANIFEST and OPTIONS files

lint: add linter to catch panic with string literal arguments

internal/keyspan: pass left and right to ShouldDefragment in checkEqual

checkpoint: fix flaky TestCheckpointFlushableIngest

compact: fix EncodeSpan error check in range delete path

blob: fix math.MaxUint32 overflow on 32-bit platforms

replay: fix race between FlushEnd and refreshMetrics

github: add nightly workflow and crossversion stress for 26.2

internal/keyspan: improve assertion failure panics

colblk: widen Decode function offset/count types to prevent overflow

sstable: return error from EncodeSpan on same-boundary trailer misordering

db: fix iterator leak on close

objstorage: adjust remote.Locator to support redactability

compaction: skip pre-valsep files in policy comparison, add annotations