Marten: foundation re-pin + adopt lifted async-daemon distributors + cut 9.0.0-alpha.5

[jeremydmiller]

Closes the "Async daemon abstractions — confirm Marten consumes the JasperFx.Events 2.0 versions; remove any Marten-side fork" dedupe row and the "Cut Marten 9.0.0-alpha.5" foundation re-pin from Marten#4349. Sibling to Polecat #118 (interfaces) + Polecat #119 (concretes).

Foundation re-pin

Package	From	To
JasperFx	2.0.0-alpha.17	2.0.0-alpha.20
JasperFx.Events	2.0.0-alpha.16	2.0.0-alpha.20
JasperFx.Events.SourceGenerator	2.0.0-alpha.9	2.0.0-alpha.12
JasperFx.SourceGeneration	2.0.0-alpha.6	2.0.0-alpha.9
Weasel.Postgresql / Weasel.EntityFrameworkCore	9.0.0-alpha.6	9.0.0-alpha.7
Marten	9.0.0-alpha.4	9.0.0-alpha.5

JasperFx.Events is pinned at alpha.20 rather than the chip's alpha.19 — the SingleTenantProjectionDistributor lift (JasperFx #320) only shipped in alpha.20. Weasel alpha.7 is load-bearing: its AdvisoryLock now implements JasperFx.Events.Daemon.IAdvisoryLock directly (nuspec picks up a JasperFx.Events 2.0.0-alpha.19 dep), which is what lets Marten pass it straight to the lifted distributors with no wrapper. JasperFx.RuntimeCompiler is not referenced by any Marten csproj (retired in #4454), so there was no RC pin to bump.

Distributor dedupe

Deleted (Marten-local):

• Events/Daemon/Coordination/IProjectionDistributor.cs
• Events/Daemon/Coordination/IProjectionSet.cs
• Events/Daemon/Coordination/SoloProjectionDistributor.cs
• Events/Daemon/Coordination/SingleTenantProjectionDistributor.cs
• Events/Daemon/Coordination/MultiTenantedProjectionDistributor.cs

Adopted from JasperFx.Events.Daemon: IProjectionDistributor, IProjectionSet, IProjectionDatabase, and the Solo / SingleTenant / MultiTenanted concretes.

Consumption-site changes:

• MartenDatabase : IProjectionDatabase — Identifier comes from the Weasel DatabaseBase; DatabaseUri is an explicit-interface impl returning the canonical descriptor URI (off the public surface, never hit on the daemon hot path).
• ProjectionSet retained as the Marten-side IProjectionSet implementation; dead BuildDaemon() dropped (no callers, not part of the lifted contract).
• ProjectionCoordinator.BuildDistributor constructs the lifted distributors with closures over Marten's tenancy (Storage.AllDatabases / Storage.Database), shards (Projections.AllShards), the Postgres lock factory (Weasel AdvisoryLock), the ProjectionSet factory, the event schema name (SingleTenant lock-id qualifier), and DaemonLockId.

Lock-id formula is unchanged: the lifted SingleTenantProjectionDistributor routes through ProjectionLockIds.Compute(schema, shard, baseLockId), byte-identical to Marten's prior Math.Abs(hash)+DaemonLockId.

Verification

• dotnet build src/Marten.slnx -c Release — 0 errors (net9 + net10).
• DaemonTests: 185 passed / 0 failed / 0 skipped (net10).
• EventSourcingTests: 1322 passed / 0 failed / 6 skipped (net10).
• DaemonTests.ManualOnly (run one test at a time): 10 passed, 15 failed — all 15 failures verified pre-existing on master, none caused by this change:
  • 11 are InvalidProjectionException: No source-generated dispatcher found (BlueProjection / GreenProjection / FakeSingleStream*Projection aren't partial — bit-rotted ManualOnly fixtures; fail identically on clean master).
  • 4 are flaky multi-daemon daemon.IsRunning leadership timing assertions; all fail on clean master too (single-daemon HotCold + AdvisoryLocks tests, which exercise the new distributors on the happy path, pass).
• Marten.AotSmoke builds + runs clean (no new IL warnings from the changed files).
• ModularConfigTests — 5/5 (PR Marten#4472: Modular composite configuration smoke + behavior tests across satellite assemblies #4495 gate).

Follow-up (out of scope, not a regression here)

DaemonTests.ManualOnly's BlueProjection / GreenProjection / FakeSingleStream*Projection fixtures need to be made partial (+ the project needs the JasperFx.Events.SourceGenerator analyzer) to satisfy the post-#276 source-gen dispatcher requirement. They've bit-rotted since that landed because the project is excluded from CI. Worth a separate clean-up issue.

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