fix: move zod to dependencies (fixes #260)

.changeset/fix-zod-runtime-dep.md

@@ -0,0 +1,5 @@
+---
+"@across-protocol/app-sdk": patch
+---
+
+Fix unresolved `zod` import at build time by moving it from `devDependencies` to `dependencies`. The SDK imports `zod` at runtime (in `api/` modules), so consumers without `zod` transitively in their tree previously failed to build.

packages/sdk/package.json

@@ -40,6 +40,9 @@
     "ci": "pnpm run build && pnpm run check-exports && pnpm run lint && pnpm run test",
     "typedoc": "typedoc --out docs src/index.ts"
   },
+  "dependencies": {
+    "zod": "^3.24.2"
+  },
   "devDependencies": {
     "@across-toolkit/eslint-config": "workspace:*",
     "@across-toolkit/typescript-config": "workspace:*",
@@ -54,8 +57,7 @@
     "typedoc-plugin-markdown": "^4.8.1",
     "typescript": "^5.3.3",
     "viem": "2.31.2",
-    "vitest": "^2.0.5",
-    "zod": "^3.24.2"
+    "vitest": "^2.0.5"
   },
   "publishConfig": {
     "access": "public"