Release 9.19.0 — adopt JasperFx 2.35.0, RaiseSideEffects slice-id docs, fix #5039

[jeremydmiller]

Stages the Marten 9.19.0 release for the coordinated Critter Stack drop.

What's in it

Adopt JasperFx / JasperFx.Events 2.35.0

Bumps the JasperFx family pins (JasperFx, JasperFx.Events, JasperFx.Events.SourceGenerator, JasperFx.SourceGenerator) 2.34.0 → 2.35.0. 2.35.0 adds the backwards-compatible aggregation-projection overload RaiseSideEffects(TOperations operations, TId id, IEventSlice<TDoc> slice) (#561). The self-pinned dogfood Marten version is intentionally left as-is.

Docs: RaiseSideEffects slice-id overload sample

New prose + compiled sample_raise_side_effects_with_slice_id snippet in docs/events/projections/side-effects.md, backed by raise_side_effects_with_slice_id (EventSourcingTests) which exercises the null-snapshot delete path end to end through the async daemon. The id parameter lets a MultiStreamProjection recover the slice identity to emit a follow-on event / publish a message even when slice.Snapshot == null (deleted aggregate).

Fix #5039 — UriFormatException for generic secondary-store markers

SecondaryStoreConfig.Build put the raw CLR type name into the marten:// subject URI. A closed generic marker (e.g. IMartenStoreMarker<MyContext>) has a backtick + arity in its name (IMartenStoreMarker\1), which is not a valid URI host → UriFormatException. Now sanitized (arity stripped, generic args folded in so distinct closed generics stay distinct). Regression test in Bug_5039_generic_secondary_store_marker`.

Version

Directory.Build.props → 9.19.0.

Verification

• Full solution builds clean (net9.0 + net10.0, 0 errors).
• side_effects_in_aggregations (7), composite/blue-green side-effect gates (3), Bug_5001_running_on_node_persisted (2), EventSourcingTests.Aggregation (159), Bug_5039_* (2), LINQ Operators (203) all green locally on 2.35.0.
• markdownlint + cspell clean on the changed doc; mdsnippets in sync.

Issue board

• Extended progression: running_on_node stays NULL under managed distribution (AssignedNodeNumber never stamped on published ShardState) #5001 (running_on_node NULL) — closed; Marten's link is complete and pinned green on 2.35.0, remaining stamp is the already-shipped distribution-layer responsibility (see issue comment).
• Cache LINQ query plans per filter shape — compiled-query performance for conditional Where chains #5013 / PR feat: Cache LINQ query plans per filter shape (fixes #5013) #5018 (LINQ query-plan cache) — not merged; review found a data-correctness blocker (null filter value replays col = NULL instead of IS NULL → silent wrong results on a cache hit). Change-requested; stays open for a follow-up. Does not gate the release (opt-in, unmerged).
• SecondaryStoreConfig.Build throws UriFormatException for generic marker interfaces (backtick in type name) #5039 — fixed here.

🤖 Generated with Claude Code

Closes #5039.