refactor: code smell fixes — tests, events, naming

- Tests for ExecutePipelineHandler (happy path, fallback, disabled skip, failure retry, not found)
- Tests for ProcessNextJobHandler (empty queue, process, drain multiple)
- DerivativeGenerated domain event + event-payload mapping + event_store aggregate
- Renamed event-payload → adapters-event-payload, event-transport → adapters-event-transport

crates/adapters/event-payload/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "event-payload"
+name = "adapters-event-payload"
 version = "0.1.0"
 edition = "2024"
 

crates/adapters/event-payload/src/lib.rs

@@ -34,6 +34,12 @@ pub enum EventPayload {
         asset_id: String,
         timestamp: String,
     },
+    DerivativeGenerated {
+        asset_id: String,
+        derivative_id: String,
+        profile: String,
+        timestamp: String,
+    },
     JobEnqueued {
         job_id: String,
         job_type: String,
@@ -59,6 +65,7 @@ impl EventPayload {
             Self::ShareCreated { .. } => "shares.created",
             Self::ShareRevoked { .. } => "shares.revoked",
             Self::SidecarSyncRequested { .. } => "sidecars.sync_requested",
+            Self::DerivativeGenerated { .. } => "derivatives.generated",
             Self::JobEnqueued { .. } => "jobs.enqueued",
             Self::JobCompleted { .. } => "jobs.completed",
             Self::JobFailed { .. } => "jobs.failed",
@@ -123,6 +130,17 @@ impl From<&DomainEvent> for EventPayload {
                 asset_id: asset_id.to_string(),
                 timestamp: timestamp.to_string(),
             },
+            DomainEvent::DerivativeGenerated {
+                asset_id,
+                derivative_id,
+                profile,
+                timestamp,
+            } => Self::DerivativeGenerated {
+                asset_id: asset_id.to_string(),
+                derivative_id: derivative_id.to_string(),
+                profile: profile.clone(),
+                timestamp: timestamp.to_string(),
+            },
             DomainEvent::JobEnqueued {
                 job_id,
                 job_type,
@@ -222,6 +240,17 @@ impl TryFrom<EventPayload> for DomainEvent {
                 asset_id: SystemId::from_uuid(parse_uuid(&asset_id, "asset_id")?),
                 timestamp: parse_timestamp(&timestamp)?,
             },
+            EventPayload::DerivativeGenerated {
+                asset_id,
+                derivative_id,
+                profile,
+                timestamp,
+            } => DomainEvent::DerivativeGenerated {
+                asset_id: SystemId::from_uuid(parse_uuid(&asset_id, "asset_id")?),
+                derivative_id: SystemId::from_uuid(parse_uuid(&derivative_id, "derivative_id")?),
+                profile,
+                timestamp: parse_timestamp(&timestamp)?,
+            },
             EventPayload::JobEnqueued {
                 job_id,
                 job_type,

crates/adapters/event-transport/Cargo.toml

@@ -1,11 +1,11 @@
 [package]
-name = "event-transport"
+name = "adapters-event-transport"
 version = "0.1.0"
 edition = "2024"
 
 [dependencies]
 domain        = { workspace = true }
-event-payload = { workspace = true }
+adapters-event-payload = { workspace = true }
 serde_json    = { workspace = true }
 async-trait   = { workspace = true }
 tracing       = { workspace = true }

crates/adapters/event-transport/src/lib.rs

@@ -1,13 +1,13 @@
 pub mod composite;
 pub use composite::CompositeEventPublisher;
 
+use adapters_event_payload::EventPayload;
 use async_trait::async_trait;
 use domain::{
     errors::DomainError,
     events::{DomainEvent, EventEnvelope},
     ports::{EventConsumer, EventPublisher},
 };
-use event_payload::EventPayload;
 use futures::stream::BoxStream;
 
 #[async_trait]

crates/adapters/event-transport/src/tests.rs

@@ -55,7 +55,7 @@ async fn published_bytes_are_valid_json() {
     adapter.publish(&event).await.unwrap();
 
     let recorded = messages.lock().unwrap();
-    let payload: event_payload::EventPayload =
+    let payload: adapters_event_payload::EventPayload =
         serde_json::from_slice(&recorded[0].1).expect("should be valid JSON");
     assert_eq!(payload.subject(), "assets.ingested");
 }

crates/adapters/nats/Cargo.toml

@@ -5,7 +5,7 @@ edition = "2024"
 
 [dependencies]
 domain          = { workspace = true }
-event-transport = { workspace = true }
+adapters-event-transport = { workspace = true }
 async-nats      = { workspace = true }
 async-trait     = { workspace = true }
 futures         = { workspace = true }

crates/adapters/nats/src/lib.rs

@@ -1,7 +1,7 @@
+use adapters_event_transport::{MessageSource, RawMessage, Transport};
 use async_nats::jetstream::{self, AckKind, stream::Config as StreamConfig};
 use async_trait::async_trait;
 use domain::errors::DomainError;
-use event_transport::{MessageSource, RawMessage, Transport};
 use futures::stream::BoxStream;
 use std::sync::Arc;
 

crates/adapters/postgres/Cargo.toml

@@ -5,7 +5,7 @@ edition = "2024"
 
 [dependencies]
 domain        = { workspace = true }
-event-payload = { workspace = true }
+adapters-event-payload = { workspace = true }
 sqlx          = { workspace = true, features = ["postgres", "runtime-tokio", "migrate", "uuid", "chrono", "json"] }
 uuid          = { workspace = true }
 chrono        = { workspace = true }

crates/adapters/postgres/src/event_store.rs

@@ -1,9 +1,9 @@
 use crate::helpers::{MapDomainError, pg_repo};
+use adapters_event_payload::EventPayload;
 use async_trait::async_trait;
 use domain::{
     errors::DomainError, events::DomainEvent, ports::EventStore, value_objects::SystemId,
 };
-use event_payload::EventPayload;
 use uuid::Uuid;
 
 pg_repo!(PostgresEventStore);
@@ -14,7 +14,8 @@ fn aggregate_id(event: &DomainEvent) -> Uuid {
         DomainEvent::AssetIngested { asset_id, .. }
         | DomainEvent::MetadataUpdated { asset_id, .. }
         | DomainEvent::AssetDeleted { asset_id, .. }
-        | DomainEvent::SidecarSyncRequested { asset_id, .. } => *asset_id.as_uuid(),
+        | DomainEvent::SidecarSyncRequested { asset_id, .. }
+        | DomainEvent::DerivativeGenerated { asset_id, .. } => *asset_id.as_uuid(),
 
         DomainEvent::ShareCreated { scope_id, .. } | DomainEvent::ShareRevoked { scope_id, .. } => {
             *scope_id.as_uuid()