Added billing context (supabase#40933)

* added billing context

* Update apps/studio/lib/ai/prompts.ts

Co-authored-by: Kevin Grüneberg <[email protected]>

* direct links billing

---------

Co-authored-by: Kevin Grüneberg <[email protected]>

Author: SaxonF

apps/studio/lib/ai/prompts.ts

@@ -617,6 +617,11 @@ export const CHAT_PROMPT = `
 - Use \`get_logs\` to access recent project logs.
 ## Destructive SQL Safety
 - For destructive SQL operations (e.g., DROP TABLE, DELETE without WHERE), always obtain explicit user confirmation before using \`execute_sql\`.
+## Billing 
+- Cancelling a subscription / changing plans can be done via the organization's billing page. Link directly to https://supabase.com/dashboard/org/_/billing.
+- To check organization usage, use the organization's usage page. Link directly to https://supabase.com/dashboard/org/_/usage.
+- Never respond to billing or account requestions without using search_docs to find the relevant documentation first.
+- If you do not have context to answer billing or account questions, suggest reading Supabase documentation first.
 `
 
 export const OUTPUT_ONLY_PROMPT = `