fix: stripe portal dead-end with callback return flow

backend/src/billing.rs

@@ -769,9 +769,8 @@ impl Billing {
     }
 
     pub async fn stripe_create_customer(&self, tenant_pubkey: &str) -> Result<String> {
-        let short_pubkey: String = tenant_pubkey.chars().take(8).collect();
-        let nostr_name = self.robot.fetch_nostr_name(tenant_pubkey).await;
-        let display_name = nostr_name.unwrap_or_else(|| short_pubkey.clone());
+        let short_pubkey: String = tenant_pubkey.chars().take(12).collect();
+        let display_name = format!("Caravel tenant {short_pubkey}");
         let idempotency_key = self.idempotency_key(&["create_customer", tenant_pubkey]);
 
         let resp = self

backend/src/robot.rs

@@ -160,25 +160,6 @@ impl Robot {
         Ok(relays)
     }
 
-    pub async fn fetch_nostr_name(&self, pubkey: &str) -> Option<String> {
-        let pubkey = PublicKey::parse(pubkey).ok()?;
-        let filter = Filter::new().author(pubkey).kind(Kind::Metadata).limit(1);
-        let events = self
-            .indexer_client
-            .fetch_events(filter, Duration::from_secs(5))
-            .await
-            .ok()?;
-        let event = events.into_iter().max_by_key(|e| e.created_at)?;
-        let content: serde_json::Value = serde_json::from_str(&event.content).ok()?;
-        let name = content
-            .get("display_name")
-            .or_else(|| content.get("name"))
-            .and_then(|v| v.as_str())
-            .map(|s| s.trim().to_string())
-            .filter(|s| !s.is_empty())?;
-        Some(name)
-    }
-
     async fn fetch_messaging_relays_from_outbox(
         &self,
         recipient: &str,