Rename Organization to Project

We'll probably need a concept of organizations at some point in the future, but in practice the way we're using these in the codebase right now is as a project, so this renames it to that to avoid confusion.

app/prisma/seed.ts

@@ -5,14 +5,14 @@ import { promptConstructorVersion } from "~/promptConstructor/version";
 
 const defaultId = "11111111-1111-1111-1111-111111111111";
 
-await prisma.organization.deleteMany({
+await prisma.project.deleteMany({
   where: { id: defaultId },
 });
 
-// If there's an existing org, just seed into it
-const org =
-  (await prisma.organization.findFirst({})) ??
-  (await prisma.organization.create({
+// If there's an existing project, just seed into it
+const project =
+  (await prisma.project.findFirst({})) ??
+  (await prisma.project.create({
     data: { id: defaultId },
   }));
 
@@ -26,7 +26,7 @@ await prisma.experiment.create({
   data: {
     id: defaultId,
     label: "Country Capitals Example",
-    organizationId: org.id,
+    projectId: project.id,
   },
 });