shared: route ref-script server helpers via tx/server (keep buyer bundle clean)

Static re-exports from tx/index.ts caused vite to trace
loadEscrowScript/loadAdvertScript/buildLiveTxForPublishReferenceScripts
into the buyer UI bundle, hitting the CML WASM "ESM integration proposal"
limitation. Sibling builders avoid this with /* @vite-ignore */ dynamic
imports; we keep symmetry by parking the helpers on a separate
@marketplace/shared/tx/server entry that the buyer never imports.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

packages/shared/package.json

@@ -10,7 +10,8 @@
     "./chain": "./src/chain/index.ts",
     "./cbor": "./src/cbor/index.ts",
     "./receipt": "./src/receipt/index.ts",
-    "./tx": "./src/tx/index.ts"
+    "./tx": "./src/tx/index.ts",
+    "./tx/server": "./src/tx/server.ts"
   },
   "scripts": {
     "typecheck": "tsc --noEmit"

packages/shared/src/tx/index.ts

@@ -10,14 +10,11 @@ export type { Signer } from "./signer.js";
 export { MockSigner } from "./signer.js";
 export type { Blueprint } from "./blueprint.js";
 export { loadBlueprint } from "./blueprint.js";
-// Script-bytes loaders (used by the publish-reference-scripts CLI).
-export { loadEscrowScript, loadAdvertScript } from "./internal/liveCbor.js";
-export { pkhToEnterpriseAddress } from "./internal/pkhAddress.js";
-export type {
-  LivePublishRefScriptsParams,
-  PublishRefScriptsBuildResult,
-} from "./internal/publishReferenceScripts.js";
-export { buildLiveTxForPublishReferenceScripts } from "./internal/publishReferenceScripts.js";
+// Note: live-CBOR helpers (loadEscrowScript, loadAdvertScript,
+// buildLiveTxForPublishReferenceScripts, pkhToEnterpriseAddress) live in
+// "./server.js" — kept OUT of this index so the buyer's vite bundle
+// doesn't trace into lucid-evolution / CML WASM (sibling builders use
+// /* @vite-ignore */ dynamic imports for the same reason).
 
 // Advert builders
 export type { PostAdvertParams } from "./advert/postAdvert.js";

packages/shared/src/tx/server.ts

@@ -0,0 +1,18 @@
+/**
+ * tx/server.ts — server-only re-exports.
+ *
+ * These bind the lucid-evolution + CML WASM dep graph at import time, so
+ * they MUST NOT be imported from anything that gets bundled by Vite (i.e.
+ * the buyer UI). The buyer SDK uses /* @vite-ignore *\/ dynamic imports
+ * to reach the live-CBOR builders for the same reason.
+ *
+ * Consumers: supplier CLIs and Node-only tx tooling.
+ */
+
+export { loadEscrowScript, loadAdvertScript } from "./internal/liveCbor.js";
+export { pkhToEnterpriseAddress } from "./internal/pkhAddress.js";
+export type {
+  LivePublishRefScriptsParams,
+  PublishRefScriptsBuildResult,
+} from "./internal/publishReferenceScripts.js";
+export { buildLiveTxForPublishReferenceScripts } from "./internal/publishReferenceScripts.js";