feat(kona/service): refactor kona-service to make it easier to test the derivation pipeline

[theochap]

Summary

• Refactors the NodeActor trait and all actor implementations in kona-service to simplify initialization and improve testability of the derivation pipeline
• Introduces InboundData pattern to decouple actor construction from inter-actor communication wiring
• Touches all actors (derivation, engine, l1_watcher, network, rpc, sequencer) and the node service orchestration

Test plan

• Existing unit tests pass (cargo nextest run --package kona-node-service)
• Network actor integration tests pass
• Gossip example builds and runs

🤖 Generated with Claude Code

[almanax-ai]

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[codecov]

Codecov Report

❌ Patch coverage is 4.00000% with 144 lines in your changes missing coverage. Please review.
✅ Project coverage is 75.9%. Comparing base (86f1d29) to head (07272e9).

Files with missing lines	Patch %	Lines
rust/kona/crates/node/service/src/service/node.rs	0.0%	89 Missing ⚠️
...crates/node/service/src/actors/l1_watcher/actor.rs	0.0%	24 Missing ⚠️
...ona/crates/node/service/src/actors/engine/actor.rs	0.0%	12 Missing ⚠️
.../crates/node/service/src/actors/sequencer/actor.rs	0.0%	6 Missing ⚠️
rust/kona/crates/node/service/src/service/util.rs	0.0%	5 Missing ⚠️
...crates/node/service/src/actors/derivation/actor.rs	0.0%	3 Missing ⚠️
...t/kona/crates/node/service/src/actors/rpc/actor.rs	0.0%	3 Missing ⚠️
...e/service/src/actors/derivation/delegated/actor.rs	0.0%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #19141      +/-   ##
===========================================
+ Coverage     75.3%    75.9%    +0.6%     
===========================================
  Files          194      477     +283     
  Lines        11285    59795   +48510     
===========================================
+ Hits          8502    45420   +36918     
- Misses        2639    14375   +11736     
+ Partials       144        0     -144     

Flag	Coverage Δ
cannon-go-tests-64	?
contracts-bedrock-tests	?
unit	75.9% <4.0%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...na/crates/node/service/src/actors/network/actor.rs	100.0% <100.0%> (ø)
...e/service/src/actors/derivation/delegated/actor.rs	0.0% <0.0%> (ø)
...crates/node/service/src/actors/derivation/actor.rs	0.0% <0.0%> (ø)
...t/kona/crates/node/service/src/actors/rpc/actor.rs	90.0% <0.0%> (ø)
rust/kona/crates/node/service/src/service/util.rs	0.0% <0.0%> (ø)
.../crates/node/service/src/actors/sequencer/actor.rs	24.5% <0.0%> (ø)
...ona/crates/node/service/src/actors/engine/actor.rs	0.0% <0.0%> (ø)
...crates/node/service/src/actors/l1_watcher/actor.rs	0.0% <0.0%> (ø)
rust/kona/crates/node/service/src/service/node.rs	0.0% <0.0%> (ø)

... and 662 files with indirect coverage changes

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[graphite-app]

Missing initialization of the needs_reset field in the test actor construction. The SequencerActor struct now includes a needs_reset: bool field (added in actor.rs line 138), but it's not being initialized here. This will cause a compilation error.

SequencerActor {
    // ... existing fields ...
    build_ticker,
    next_payload_to_seal: None,
    last_seal_duration: Duration::from_secs(0),
    needs_reset: false, // Add this line
}

Spotted by Graphite Agent



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