feat(ai): include org slug in Assistant Braintrust span metadata (#49692)

<!-- ccr-slack-attribution -->
_Requested by **Matt Rossman** · [Slack
thread](https://supabase.slack.com/archives/D0A79RYJKRB/p1787926891744399)_


# Problem

Assistant spans in Braintrust record only the numeric `orgId`, whereas
support tickets show org slug.

This incurs an extra manual step to resolve the ID through admin studio
before the trace can be found.

# Fix

Adds `orgSlug` to spans, sourced from the same verified org lookup that
produces `orgId`.

Renamed the request body's `orgSlug` to `rawOrgSlug` to distinguish the
verified slug from getAIDetails, following the existing
rawRequestedModel / requestedModel pattern.

## How to review

See sample trace
[94863b6d-aaa9-449a-a9c9-981ad40e614a](https://www.braintrust.dev/app/supabase.io/p/Assistant/trace?object_type=project_logs&object_id=5a8d02e5-b3b6-40cc-ba76-ecee286478f4&r=223112cd-33f4-45c4-a273-8d3781689448&s=223112cd-33f4-45c4-a273-8d3781689448)
produced from sending a chat from the
[Preview](https://studio-staging-git-mattrossman-ai-1149-include-698a5f-supabase.vercel.app/dashboard/org)
on this PR.

Note it now includes the org slug in span metadata:

<img width="873" height="548" alt="CleanShot 2026-08-28 at 10 59 49@2x"
src="https://github.com/user-attachments/assets/bcf47a94-6782-434a-9006-c7b9c95f1c37"
/>

If desired you can test yourself too by chatting with Assistant in the
preview and looking up the corresponding Chat ID from Braintrust
[logs](https://www.braintrust.dev/app/supabase.io/p/Assistant/logs).

Closes AI-1149

---
_Generated by [Claude
Code](https://claude.ai/code/session_01N2ziJech9dV19pJ9MisYdX)_

---------

Co-authored-by: Claude <noreply@anthropic.com>

apps/studio/lib/ai/ai-details.test.ts

@@ -91,6 +91,7 @@ describe('getAIDetails', () => {
       hasAccessToAdvanceModel: false,
       hasHipaaAddon: false,
       orgId: 1,
+      orgSlug: ORG_SLUG,
       planId: 'pro',
       region: 'us-east-1',
       isSensitive: false,
@@ -189,6 +190,7 @@ describe('getAIDetails', () => {
       expect(result.aiOptInLevel).toBe('disabled')
       expect(result.hasAccessToAdvanceModel).toBe(false)
       expect(result.orgId).toBeUndefined()
+      expect(result.orgSlug).toBeUndefined()
       expect(result.planId).toBeUndefined()
     })
 
@@ -216,6 +218,7 @@ describe('getAIDetails', () => {
 
     expect(result.aiOptInLevel).toBe('disabled')
     expect(result.orgId).toBeUndefined()
+    expect(result.orgSlug).toBeUndefined()
   })
 
   it('falls back to the most restrictive posture when project detail is unavailable', async () => {

apps/studio/lib/ai/ai-details.ts

@@ -11,6 +11,7 @@ export type AIDetails = {
   hasAccessToAdvanceModel: boolean
   hasHipaaAddon: boolean | undefined
   orgId: number | undefined
+  orgSlug: string | undefined
   planId: string | undefined
   region: string | undefined
   isSensitive: boolean | null | undefined
@@ -56,6 +57,7 @@ export const getAIDetails = async ({
       // Undefined rather than false so isTracingAllowed fails closed
       hasHipaaAddon: undefined,
       orgId: undefined,
+      orgSlug: undefined,
       planId: undefined,
       region,
       isSensitive,
@@ -72,6 +74,7 @@ export const getAIDetails = async ({
     hasAccessToAdvanceModel: advanceModelAccess.hasAccess,
     hasHipaaAddon,
     orgId: selectedOrg.id,
+    orgSlug: selectedOrg.slug,
     planId: selectedOrg.plan.id,
     region,
     isSensitive,

apps/studio/lib/ai/generate-assistant-response.ts

@@ -39,6 +39,7 @@ export async function generateAssistantResponse({
   supportMode,
   userId,
   orgId,
+  orgSlug,
   planId,
   includesLogsSnippets,
   isExplorerEnabled,
@@ -60,6 +61,7 @@ export async function generateAssistantResponse({
   supportMode?: boolean
   userId?: string
   orgId?: number
+  orgSlug?: string
   planId?: string
   /** Whether any user message in the conversation attached a logs (ClickHouse) query. */
   includesLogsSnippets?: boolean
@@ -171,6 +173,7 @@ export async function generateAssistantResponse({
         aiOptInLevel,
         userId,
         orgId,
+        orgSlug,
         planId,
         requestedModel,
         gitBranch: process.env.VERCEL_GIT_COMMIT_REF,

apps/studio/pages/api/ai/sql/generate-v4.ts

@@ -96,7 +96,7 @@ async function handlePost(req: NextApiRequest, res: NextApiResponse, claims?: Jw
     messages: rawMessages,
     projectRef,
     connectionString,
-    orgSlug,
+    orgSlug: rawOrgSlug,
     chatId,
     chatName,
     model: rawRequestedModel,
@@ -126,6 +126,7 @@ async function handlePost(req: NextApiRequest, res: NextApiResponse, claims?: Jw
   let projectIsSensitive: boolean | null | undefined
   let projectRegion: string | undefined
   let orgId: number | undefined
+  let orgSlug: string | undefined
   let planId: string | undefined
 
   if (!IS_PLATFORM) {
@@ -133,14 +134,15 @@ async function handlePost(req: NextApiRequest, res: NextApiResponse, claims?: Jw
     hasAccessToAdvanceModel = true
   }
 
-  if (IS_PLATFORM && orgSlug && authorization && projectRef) {
+  if (IS_PLATFORM && rawOrgSlug && authorization && projectRef) {
     try {
-      const aiDetails = await getAIDetails({ orgSlug, projectRef, authorization })
+      const aiDetails = await getAIDetails({ orgSlug: rawOrgSlug, projectRef, authorization })
 
       aiOptInLevel = aiDetails.aiOptInLevel
       hasAccessToAdvanceModel = aiDetails.hasAccessToAdvanceModel
       orgHasHipaaAddon = aiDetails.hasHipaaAddon
       orgId = aiDetails.orgId
+      orgSlug = aiDetails.orgSlug
       planId = aiDetails.planId
       projectIsSensitive = aiDetails.isSensitive
       projectRegion = aiDetails.region
@@ -234,6 +236,7 @@ async function handlePost(req: NextApiRequest, res: NextApiResponse, claims?: Jw
       supportMode,
       userId,
       orgId,
+      orgSlug,
       planId,
       includesLogsSnippets,
       isExplorerEnabled: explorerEnabled,