refactor(core): consolidate session event reset

Author: kitlangton

packages/core/src/database/migration.gen.ts

@@ -2,7 +2,7 @@ import { Effect } from "effect"
 import type { DatabaseMigration } from "../migration"
 
 export default {
-  id: "20260703200000_reset_v2_event_fragments",
+  id: "20260703200000_reset_v2_session_events",
   up(tx) {
     return Effect.gen(function* () {
       yield* tx.run(`DELETE FROM \`session_input\`;`)

…260703200000_reset_v2_event_fragments.ts …0260703200000_reset_v2_session_events.tspackages/core/src/database/migration/20260703200000_reset_v2_event_fragments.ts renamed to packages/core/src/database/migration/20260703200000_reset_v2_session_events.ts packages/core/src/database/migration/20260703200000_reset_v2_event_fragments.ts renamed to packages/core/src/database/migration/20260703200000_reset_v2_session_events.ts

@@ -15,7 +15,7 @@ import eventSourcedSessionInputMigration from "@opencode-ai/core/database/migrat
 import contextEpochAgentMigration from "@opencode-ai/core/database/migration/20260605042240_add_context_epoch_agent"
 import simplifyIntegrationCredentialsMigration from "@opencode-ai/core/database/migration/20260611192811_lush_chimera"
 import simplifySessionInputMigration from "@opencode-ai/core/database/migration/20260622202450_simplify_session_input"
-import resetExecutionErrorsMigration from "@opencode-ai/core/database/migration/20260703210000_reset_v2_execution_errors"
+import resetSessionEventsMigration from "@opencode-ai/core/database/migration/20260703200000_reset_v2_session_events"
 import { AppNodeBuilder } from "@opencode-ai/core/effect/app-node-builder"
 import { LayerNode } from "@opencode-ai/core/effect/layer-node"
 import { EventV2 } from "@opencode-ai/core/event"
@@ -39,7 +39,7 @@ const run = <A, E>(effect: Effect.Effect<A, E, SqlClientService>) =>
 const makeDb = EffectDrizzleSqlite.makeWithDefaults()
 
 describe("DatabaseMigration", () => {
-  test("resets incompatible V2 execution and error history", async () => {
+  test("resets incompatible V2 Session event history", async () => {
     await run(
       Effect.gen(function* () {
         const db = yield* makeDb
@@ -52,7 +52,7 @@ describe("DatabaseMigration", () => {
         yield* db.run(sql`INSERT INTO event (id) VALUES ('event')`)
         yield* db.run(sql`INSERT INTO event_sequence (aggregate_id, seq) VALUES ('session', 1)`)
 
-        yield* DatabaseMigration.applyOnly(db, [resetExecutionErrorsMigration])
+        yield* DatabaseMigration.applyOnly(db, [resetSessionEventsMigration])
 
         expect(yield* db.get(sql`SELECT id FROM session_input`)).toBeUndefined()
         expect(yield* db.get(sql`SELECT id FROM session_message`)).toBeUndefined()

packages/core/src/database/migration/20260703210000_reset_v2_execution_errors.ts

@@ -972,5 +972,5 @@ Compatibility:
 
 Compatibility:
 
-- All changed durable definitions remain version 1. `20260703200000_reset_v2_event_fragments` wipes experimental V2 events, sequences, projected messages, and admitted inputs.
+- All changed durable definitions remain version 1. `20260703200000_reset_v2_session_events` performs the single reset for this Session event contract update, wiping experimental V2 events, sequences, projected messages, and admitted inputs.
 - Promise, Effect, and legacy JavaScript SDK surfaces are regenerated from the simplified schemas.