[nexus] feat(20-01): add gemini_local to AGENT_ADAPTER_TYPES constant

- Add gemini_local to AGENT_ADAPTER_TYPES array after hermes_local
- Closes TypeScript gap where gemini_local was valid in UI adapter registry but missing from AgentAdapterType union type
- TypeScript compiles cleanly for @paperclipai/shared and @paperclipai/ui

packages/shared/src/constants.ts

@@ -31,6 +31,7 @@ export const AGENT_ADAPTER_TYPES = [
   "cursor",
   "openclaw_gateway",
   "hermes_local",
+  "gemini_local",
 ] as const;
 export type AgentAdapterType = (typeof AGENT_ADAPTER_TYPES)[number];