feat(utils): add safe json parsing utility

Add safeParseJson function to handle JSON parsing with error catching

packages/shared/utils/index.ts

@@ -1 +1,2 @@
+export * from './json'
 export * from './net'

packages/shared/utils/json.ts

@@ -0,0 +1,7 @@
+export function safeParseJson(text: string): unknown | null {
+  try {
+    return JSON.parse(text)
+  } catch {
+    return null
+  }
+}