v0.7.0

Highlights

• Breaking: ledger.emit(...) now returns the durable event envelope for the winning event instead of void. When dedupeKey matches an existing event, Sledge returns that existing event envelope without replaying materialization.
• Add durable work inspection and cancellation APIs: ledger.cancelWork(...), ledger.queryWork(...), and ledger.listWork(...).
• Cancellation is terminal: cancelled work will not dispatch or retry after restart. If the cancelled work is leased by the active worker handle, Sledge also aborts the lease signal.
• Add terminalWorkRetentionMs to ledger.startWorkers(...) options for shared dead and cancelled work retention.
• Ensure work inspection APIs read committed work state only and do not expose rows staged by in-flight event materialization that may roll back.