Bump WolverineFx from 6.28.2 to 6.29.0

[dependabot]

Updated WolverineFx from 6.28.2 to 6.29.0.

Release notes

Sourced from WolverineFx's releases.

6.29.0

A feature release. Three of the five items fix silent failure modes — work that acted on a write which could still roll back, a convention mirror that installed a relay over a real handler, and two concurrent writers to one entity — so the notes below say what the old behaviour looked like, not just what changed.

AfterCommit — run work after the transactional commit

After reads like a post-handler hook that runs at the end. It does not run after the commit (#​3976, closes #​3975).

The commit is itself a postprocessor contributed by the persistence provider, and After methods are inserted at the front of that list. So an After method observing a write is observing one that is not durable yet and may still roll back — and there was no supported way to ask for the other side of it, even though Wolverine uses that position itself for the outbox flush.

public static class RaiseAlertHandler
{
    public static void Handle(RaiseAlert command, IDocumentSession session)
        => session.Events.Append(command.Id, new AlertRaised(command.Reason));

    // Only runs if the append above actually committed
    public static void AfterCommit(AlertLatch latch, RaiseAlert command)
        => latch.MarkRaised(command.Id);
}

Use the AfterCommit / AfterCommitAsync convention or [WolverineAfterCommit], on message handlers, sagas and HTTP endpoints. Parameters bind exactly as After already does.

The position is structural, not positional — frames go into a new IChain.PostCommitPostprocessors list concatenated after every postprocessor at frame-assembly time, rather than being appended from a policy sequenced after the persistence policy. Getting the position right by luck of policy ordering is precisely what breaks silently later.

Two behaviours worth knowing:

• They do not run when the commit throws. Frames are concatenated without a try/finally, so the exception unwinds straight past them. That is the point — the reason to want "after the commit" is usually that the side effect must not happen for a write that did not land.
• They run after the outbox flush as well, so a message cascaded from an after-commit method is not atomic with the write. Cascade from the handler if it has to be.

After's pre-commit position is unchanged and stays that way. Verified per provider: Marten, Polecat, Fisher, EF Core, RavenDb and CosmosDb each have a codegen test asserting the emitted call lands after that provider's own commit frame.

A store-agnostic EventsToAppend return type

Wolverine.Marten.Events, Wolverine.Polecat.Events and Wolverine.Fisher.Events are identical but store-named, so a handler that wanted to be store-agnostic could not name any of them (#​3969, closes #​3941).

The store-agnostic path did exist — a bare IEnumerable<object> return is picked up by a fallback — but that fallback is positional. IEnumerable<T> is covariant, so every reference-typed collection in a return tuple is a candidate and the first one wins. Nothing failed at codegen and nothing failed at runtime; the wrong collection simply became the appended events.

The type is EventsToAppend, not Events. Naming it Events would have been a source-breaking collision (CS0104) for any handler importing both the core event-sourcing namespace and a store integration — that is, on the very declaration the feature exists for.

Ask what will be handled, and how a batch is shaped

Discovery materializes after options time, so an extension installing fallback handlers could not ask "will this message type have a handler?" and had to hand-roll a mirror of Wolverine's own discovery convention (#​3977, closes #​3974).

Such a mirror drifts, and it drifts silently: one that scanned a single assembly stopped seeing handlers that moved to a second, and installed a bare relay over a real handler — the exact defect the guard existed to prevent, with every codegen test still passing.

opts.OnHandlersDiscovered(handlers =>
{
    if (!handlers.Handles<ServiceUpdates>())
    {
 ... (truncated)

Commits viewable in [compare view](http://github.com/jasperfx/wolverine/compare/V6.28.2...V6.29.0).
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[dependabot]

Superseded by #558.