Fix build docs script

Author: quietbits

docs/llms-full.txt

@@ -2238,7 +2238,7 @@ const AuthClawbackEnabledFlag: number
 ## AuthFlag
 
 ```ts
-type AuthFlag = unknown
+type AuthFlag = { readonly clawbackEnabled: 8; readonly immutable: 4; readonly required: 1; readonly revocable: 2 }
 ```
 
 **Source:** [src/base/operations/types.ts:431](https://github.com/stellar/js-stellar-sdk/blob/main/src/base/operations/types.ts#L431)
@@ -26043,7 +26043,7 @@ txFromXDR<T>(xdrBase64: string): AssembledTransaction<T>;
 Options for a smart contract client.
 
 ```ts
-type ClientOptions = unknown
+type ClientOptions = { allowHttp?: boolean; contractId: string; errorTypes?: Record<number, { message: string }>; headers?: Record<string, string>; networkPassphrase: string; publicKey?: string; rpcUrl: string; server?: Server; signAuthEntry?: SignAuthEntry; signTransaction?: SignTransaction }
 ```
 
 **Source:** [src/contract/types.ts:127](https://github.com/stellar/js-stellar-sdk/blob/main/src/contract/types.ts#L127)
@@ -26100,7 +26100,7 @@ message: string;
 Options for a smart contract method invocation.
 
 ```ts
-type MethodOptions = unknown
+type MethodOptions = { fee?: string; publicKey?: string; restore?: boolean; signAuthEntry?: SignAuthEntry; signTransaction?: SignTransaction; simulate?: boolean; timeoutInSeconds?: number }
 ```
 
 **Source:** [src/contract/types.ts:203](https://github.com/stellar/js-stellar-sdk/blob/main/src/contract/types.ts#L203)
@@ -28328,7 +28328,7 @@ A promise that resolves to the federation record
 A parsed and validated challenge transaction, and some of its constituent details.
 
 ```ts
-type ChallengeTxDetails = unknown
+type ChallengeTxDetails = { clientAccountId: string; matchedHomeDomain: string; memo?: string; tx: Transaction }
 ```
 
 **Source:** [src/webauth/utils.ts:104](https://github.com/stellar/js-stellar-sdk/blob/main/src/webauth/utils.ts#L104)

docs/reference/contracts-client.md

@@ -793,7 +793,7 @@ txFromXDR<T>(xdrBase64: string): AssembledTransaction<T>;
 Options for a smart contract client.
 
 ```ts
-type ClientOptions = unknown
+type ClientOptions = { allowHttp?: boolean; contractId: string; errorTypes?: Record<number, { message: string }>; headers?: Record<string, string>; networkPassphrase: string; publicKey?: string; rpcUrl: string; server?: Server; signAuthEntry?: SignAuthEntry; signTransaction?: SignTransaction }
 ```
 
 **Source:** [src/contract/types.ts:127](https://github.com/stellar/js-stellar-sdk/blob/main/src/contract/types.ts#L127)
@@ -850,7 +850,7 @@ message: string;
 Options for a smart contract method invocation.
 
 ```ts
-type MethodOptions = unknown
+type MethodOptions = { fee?: string; publicKey?: string; restore?: boolean; signAuthEntry?: SignAuthEntry; signTransaction?: SignTransaction; simulate?: boolean; timeoutInSeconds?: number }
 ```
 
 **Source:** [src/contract/types.ts:203](https://github.com/stellar/js-stellar-sdk/blob/main/src/contract/types.ts#L203)

docs/reference/core-transactions.md

@@ -90,7 +90,7 @@ const AuthClawbackEnabledFlag: number
 ## AuthFlag
 
 ```ts
-type AuthFlag = unknown
+type AuthFlag = { readonly clawbackEnabled: 8; readonly immutable: 4; readonly required: 1; readonly revocable: 2 }
 ```
 
 **Source:** [src/base/operations/types.ts:431](https://github.com/stellar/js-stellar-sdk/blob/main/src/base/operations/types.ts#L431)

docs/reference/seps-webauth.md

@@ -10,7 +10,7 @@ description: Wallet authentication via SEP-10 challenge transactions — build,
 A parsed and validated challenge transaction, and some of its constituent details.
 
 ```ts
-type ChallengeTxDetails = unknown
+type ChallengeTxDetails = { clientAccountId: string; matchedHomeDomain: string; memo?: string; tx: Transaction }
 ```
 
 **Source:** [src/webauth/utils.ts:104](https://github.com/stellar/js-stellar-sdk/blob/main/src/webauth/utils.ts#L104)

scripts/build-docs.ts

@@ -713,7 +713,12 @@ function renderSignature(refl: Reflection): string {
   switch (refl.kind) {
     case KIND_TYPE_ALIAS: {
       const tparams = renderTypeParameters(refl.typeParameters);
-      const rhs = refl.type !== undefined ? renderType(refl.type) : "unknown";
+      const rhs =
+        refl.type !== undefined
+          ? renderType(refl.type)
+          : refl.children !== undefined && refl.children.length > 0
+            ? renderReflectionType(refl)
+            : "unknown";
       return `type ${refl.name}${tparams} = ${rhs}`;
     }
     case KIND_FUNCTION: {