docs(opencode): restore PR #660 account-recovery rationale comment in grab span refactor

Signed-off-by: Brandon McAnsh <git@bmcreations.dev>

Author: bmc08gt

services/opencode/src/main/kotlin/com/getcode/opencode/internal/transactors/GrabBillTransactor.kt

@@ -127,6 +127,10 @@ internal class GrabBillTransactor(
                     mint = token.address
                 ).recoverCatching { error ->
                     if (error is SubmitIntentError.Denied && error.isUnexpectedOwnerAccount) {
+                        // Safety net: PR #660 mitigates the upstream cause (getUserFlags
+                        // failure preventing account bootstrap), but if the core account
+                        // still isn't set up we recover here by triggering the normal
+                        // bootstrap path before retrying.
                         accountController.refreshAccountState()
                         // Retry the original non-core mint account
                         accountController.createUserAccount(