feat: Enhance plugin store and experiment design infrastructure

- Add plugin store system with dynamic loading of robot actions
- Implement plugin store API routes and database schema
- Update experiment designer to support plugin-based actions
- Refactor environment configuration and sidebar navigation
- Improve authentication session handling with additional user details
- Update Tailwind CSS configuration and global styles
- Remove deprecated files and consolidate project structure

src/server/db/schema.ts

@@ -1,4 +1,6 @@
 // Re-export all schema definitions from individual schema files
 export * from "./schema/auth";
 export * from "./schema/studies";
-export * from "./schema/permissions";
+export * from "./schema/permissions";
+export * from "./schema/experiments";
+export * from "./schema/store";