Generation was failing. Upstream added a guard in this range that rejects
duplicate session event variants, and Kilo's tool-content codec on the shared
event schema was tripping it, so openapi.json and the SDK were stale and a temp
packages/sdk/js/openapi.json got committed by accident.
Move the codec off the event schema into core/src/kilocode/event-storage.ts,
keyed by event type and applied only at the SQL boundary. Session events are on
the wire now (SessionEvent.Durable backs /api/session/{id}/history), so a
transform there forked the generated API. Shipped readers still parse old rows
and the wire contract goes back to upstream's. Drops the consumer-side
normalizers in the TUI and sync-v2 that existed only to undo the widening.
Also: restore the Kilo HttpApi title and a few branding strings, balance five
kilocode_change markers, drop a duplicate TUI palette entry, and teach
check-model-tool-network about the LayerNode wiring that replaced
Layer.provide(ToolNetwork.httpLayer).
Johnny Amancio