feat: seed default plugins/pipelines, auto-enqueue jobs on asset ingest

- Migration seeds metadata_extractor, sidecar_sync, no_op plugins
- Pipelines: extract_metadata → metadata_extractor, sync_sidecar → sidecar_sync
- Worker reacts to AssetIngested → enqueues ExtractMetadata job
- Worker reacts to SidecarSyncRequested → enqueues SyncSidecar job
- Closes the ingest-to-processing loop end-to-end

crates/adapters/postgres/migrations/011_seed_default_plugins.sql

@@ -0,0 +1,25 @@
+-- Default plugins matching worker's InMemoryPluginRegistry
+INSERT INTO plugins (plugin_id, name, plugin_type, is_enabled, configuration)
+VALUES
+    ('a0000000-0000-4000-8000-000000000001', 'metadata_extractor', 'media_processor', true, '{}'),
+    ('a0000000-0000-4000-8000-000000000002', 'sidecar_sync',       'sidecar_writer',  true, '{}'),
+    ('a0000000-0000-4000-8000-000000000003', 'no_op',              'scheduled_task',   true, '{}')
+ON CONFLICT (plugin_id) DO NOTHING;
+
+-- Pipeline: extract_metadata → metadata_extractor
+INSERT INTO processing_pipelines (pipeline_id, trigger_event, steps)
+VALUES (
+    'b0000000-0000-4000-8000-000000000001',
+    'extract_metadata',
+    '[{"plugin_id": "a0000000-0000-4000-8000-000000000001", "step_order": 0, "configuration": {}}]'
+)
+ON CONFLICT (pipeline_id) DO NOTHING;
+
+-- Pipeline: sync_sidecar → sidecar_sync
+INSERT INTO processing_pipelines (pipeline_id, trigger_event, steps)
+VALUES (
+    'b0000000-0000-4000-8000-000000000002',
+    'sync_sidecar',
+    '[{"plugin_id": "a0000000-0000-4000-8000-000000000002", "step_order": 0, "configuration": {}}]'
+)
+ON CONFLICT (pipeline_id) DO NOTHING;

crates/adapters/postgres/src/catalog/mod.rs

@@ -1,4 +1,4 @@
-use crate::helpers::{pg_repo, MapDomainError};
+use crate::helpers::{MapDomainError, pg_repo};
 use async_trait::async_trait;
 use chrono::{DateTime, Utc};
 use domain::{

crates/adapters/postgres/src/event_store.rs

@@ -1,10 +1,7 @@
-use crate::helpers::{pg_repo, MapDomainError};
+use crate::helpers::{MapDomainError, pg_repo};
 use async_trait::async_trait;
 use domain::{
-    errors::DomainError,
-    events::DomainEvent,
-    ports::EventStore,
-    value_objects::SystemId,
+    errors::DomainError, events::DomainEvent, ports::EventStore, value_objects::SystemId,
 };
 use event_payload::EventPayload;
 use uuid::Uuid;
@@ -19,8 +16,9 @@ fn aggregate_id(event: &DomainEvent) -> Uuid {
         | DomainEvent::AssetDeleted { asset_id, .. }
         | DomainEvent::SidecarSyncRequested { asset_id, .. } => *asset_id.as_uuid(),
 
-        DomainEvent::ShareCreated { scope_id, .. }
-        | DomainEvent::ShareRevoked { scope_id, .. } => *scope_id.as_uuid(),
+        DomainEvent::ShareCreated { scope_id, .. } | DomainEvent::ShareRevoked { scope_id, .. } => {
+            *scope_id.as_uuid()
+        }
 
         DomainEvent::JobEnqueued { job_id, .. }
         | DomainEvent::JobCompleted { job_id, .. }
@@ -33,8 +31,8 @@ impl EventStore for PostgresEventStore {
     async fn append(&self, event: &DomainEvent) -> Result<(), DomainError> {
         let payload = EventPayload::from(event);
         let event_type = payload.subject().to_string();
-        let json = serde_json::to_value(&payload)
-            .map_err(|e| DomainError::Internal(e.to_string()))?;
+        let json =
+            serde_json::to_value(&payload).map_err(|e| DomainError::Internal(e.to_string()))?;
         let agg_id = aggregate_id(event);
 
         sqlx::query(

crates/adapters/postgres/src/identity/mod.rs

@@ -1,4 +1,4 @@
-use crate::helpers::{pg_repo, MapDomainError};
+use crate::helpers::{MapDomainError, pg_repo};
 use async_trait::async_trait;
 use chrono::{DateTime, Utc};
 use domain::{

crates/adapters/postgres/src/organization/mod.rs

@@ -1,4 +1,4 @@
-use crate::helpers::{pg_repo, MapDomainError};
+use crate::helpers::{MapDomainError, pg_repo};
 use async_trait::async_trait;
 use chrono::{DateTime, Utc};
 use domain::{

crates/adapters/postgres/src/processing/mod.rs

@@ -1,4 +1,4 @@
-use crate::helpers::{pg_repo, MapDomainError};
+use crate::helpers::{MapDomainError, pg_repo};
 use async_trait::async_trait;
 use chrono::{DateTime, Utc};
 use domain::{

crates/adapters/postgres/src/sharing/mod.rs

@@ -1,4 +1,4 @@
-use crate::helpers::{pg_repo, MapDomainError};
+use crate::helpers::{MapDomainError, pg_repo};
 use async_trait::async_trait;
 use chrono::{DateTime, Utc};
 use domain::{

crates/adapters/postgres/src/sidecar/mod.rs

@@ -1,4 +1,4 @@
-use crate::helpers::{pg_repo, MapDomainError};
+use crate::helpers::{MapDomainError, pg_repo};
 use async_trait::async_trait;
 use chrono::{DateTime, Utc};
 use domain::{

crates/adapters/postgres/src/storage/mod.rs

@@ -1,4 +1,4 @@
-use crate::helpers::{pg_repo, MapDomainError};
+use crate::helpers::{MapDomainError, pg_repo};
 use async_trait::async_trait;
 use chrono::{DateTime, Utc};
 use domain::{