Problem

session.compacted is still defined in @opencode/schema and registered in the event manifest, but nothing publishes it. It came over from the V1 package when event definitions moved into packages/schema (#33579); V1 compaction emitted it, and that package has since been removed. Compaction now reports through session.compaction.started, .delta, .ended, and .failed.

Change

 packages/schema/src/
-├── session-compaction-event.ts    # session.compacted, never published
 └── event-manifest.ts
-      ...SessionCompactionEvent.Definitions,

• Generated OpenAPI and clients: no change. The event was never part of them, and check:generated passes without regenerating.
• Subscribers: none in this repo. An external subscriber never received the event, so nothing changes at runtime.
• Stored data: none. The event was ephemeral.

Out of scope

• session.compacted in the docs' V1 plugin event list (packages/web/src/content/docs/**/plugins.mdx), which describes V1 plugins.

Verification