diff --git a/src/main/runtime/orchestration/db/contract-constants.ts b/src/main/runtime/orchestration/db/contract-constants.ts
index 47e0cd6165a..4b49efb9d0b 100644
--- a/src/main/runtime/orchestration/db/contract-constants.ts
+++ b/src/main/runtime/orchestration/db/contract-constants.ts
@@ -7,4 +7,4 @@ export const LEGACY_CONTRACT_VERSION = 0
 export const CURRENT_CONTRACT_VERSION = ORCHESTRATION_CONTRACT_VERSION
 
 // Schema versions: v2 'heartbeat'+last_heartbeat_at, v3 delivered_at, v4 task-creator terminal, v5 task_title/display_name, v6 pane identity, v7 lightweight Runs, v8 crash-safe Run deliveries, v9 durable question threads, v10 Dispatch capabilities, v11 durable mutation receipts, v12 composed worker state, v18 post-v6 version-skew repair, v19 adopted legacy Runs and compatibility receipts, v20 legacy question backfill, v21 legacy scheduler-loss provenance, v22 dispatch assignee lookup, v23 worker terminal resource ownership, v24 creator-incarnation authority, v25 active Dispatch handle lookup, v26 indexed mutation receipt capacity, v27 durable federation acknowledgments, v28 durable local mutation caller identity, v31 dispatch/resource identity links, v32 bounded worker-terminal recovery metadata, v33 durable mailbox pointer Enter state, v34 role-addressed mailbox deliveries, v35 mailbox delivery default and index-predicate repair, v36 dispatch mailbox consumer generation, v37 recorded dispatch creator identity, v39 structured session journal archives.
-export const SCHEMA_VERSION = 40
+export const SCHEMA_VERSION = 41
diff --git a/src/main/runtime/orchestration/db/row-column-lists.ts b/src/main/runtime/orchestration/db/row-column-lists.ts
index 8148885de06..447f39ff86e 100644
--- a/src/main/runtime/orchestration/db/row-column-lists.ts
+++ b/src/main/runtime/orchestration/db/row-column-lists.ts
@@ -13,6 +13,7 @@ export const RUN_COLUMNS = [
   'home_database',
   'coordinator_handle',
   'coordinator_agent_session_id',
+  'coordinator_agent_session_id',
   'coordinator_pane_key',
   'consumer_generation',
   'legacy',
@@ -45,6 +46,7 @@ export const DISPATCH_CONTEXT_COLUMNS = [
   'contract_version',
   'launch_token_hash',
   'assignee_handle',
+  'assignee_agent_session_id',
   'assignee_pane_key',
   'capability_hash',
   'process_incarnation',
diff --git a/src/main/runtime/orchestration/db/schema/migrate-v41.ts b/src/main/runtime/orchestration/db/schema/migrate-v41.ts
new file mode 100644
index 00000000000..843f12dbb11
--- /dev/null
+++ b/src/main/runtime/orchestration/db/schema/migrate-v41.ts
@@ -0,0 +1,9 @@
+import type { OrchestrationDb } from '../orchestration-db'
+
+export function migrateV41(this: OrchestrationDb, current: number): void {
+  if (current >= 41) {
+    return
+  }
+  this.db.exec('ALTER TABLE runs ADD COLUMN coordinator_agent_session_id TEXT')
+  this.db.exec('ALTER TABLE dispatch_contexts ADD COLUMN assignee_agent_session_id TEXT')
+}
diff --git a/src/main/runtime/orchestration/db/schema/migrate.ts b/src/main/runtime/orchestration/db/schema/migrate.ts
index 582dedf4752..33362e595a2 100644
--- a/src/main/runtime/orchestration/db/schema/migrate.ts
+++ b/src/main/runtime/orchestration/db/schema/migrate.ts
@@ -11,6 +11,7 @@ import { migrateV37 } from './migrate-v37'
 import { migrateV38 } from './migrate-v38'
 import { migrateV39 } from './migrate-v39'
 import { migrateV40 } from './migrate-v40'
+import { migrateV41 } from './migrate-v41'
 
 // Why: CREATE TABLE IF NOT EXISTS won't alter existing DBs; migrate in a txn that bumps user_version only on success (atomic all-or-nothing).
 export function migrate(this: OrchestrationDb): void {
@@ -32,6 +33,7 @@ export function migrate(this: OrchestrationDb): void {
     migrateV38.call(this, current)
     migrateV39.call(this, current)
     migrateV40.call(this, current)
+    migrateV41.call(this, current)
     this.createMailboxDeliveryIndexesIfPossible()
     this.db.pragma(`user_version = ${SCHEMA_VERSION}`)
     this.db.exec('COMMIT')
diff --git a/src/main/runtime/orchestration/types.ts b/src/main/runtime/orchestration/types.ts
index 05fb7a22d1c..a3e63effe61 100644
--- a/src/main/runtime/orchestration/types.ts
+++ b/src/main/runtime/orchestration/types.ts
@@ -273,6 +273,7 @@ export type TaskRow = {
 }
 
 export type DispatchContextRow = {
+  assignee_agent_session_id: string | null
   id: string
   run_id: string
   task_id: string