feat: add cliInitializedAt field to project metadata (#6538)

* feat: add cliInitializedAt field to project metadata

* feat: send cliInitializedAt only once

packages/@sanity/cli/src/actions/init-project/initProject.ts

@@ -2,7 +2,7 @@ import {existsSync, readFileSync} from 'node:fs'
 import fs from 'node:fs/promises'
 import path from 'node:path'
 
-import {type DatasetAclMode} from '@sanity/client'
+import {type DatasetAclMode, type SanityProject} from '@sanity/client'
 import {type Framework} from '@vercel/frameworks'
 import dotenv from 'dotenv'
 import execa, {type CommonOptions} from 'execa'
@@ -610,6 +610,21 @@ export default async function initSanity(
     print(`sanity help - to explore the CLI manual`)
   }
 
+  try {
+    const client = apiClient({api: {projectId: projectId}})
+    const project = await client.request<SanityProject>({uri: `/projects/${projectId}`})
+    if (!project?.metadata?.cliInitializedAt) {
+      await apiClient({api: {projectId}}).request({
+        method: 'PATCH',
+        uri: `/projects/${projectId}`,
+        body: {metadata: {cliInitializedAt: new Date().toISOString()}},
+      })
+    }
+  } catch (err: unknown) {
+    // Non-critical update
+    debug('Failed to update cliInitializedAt metadata')
+  }
+
   const sendInvite =
     isFirstProject &&
     (await prompt.single({