refactor(enclave): enhance error extraction and logging for better debugging

src/enclave.ts

@@ -17,12 +17,19 @@ function extractErrorMessage(err: unknown): string {
     if (typeof obj.message === 'string') return obj.message;
     if (typeof obj.error === 'string') return obj.error;
     if (typeof obj.msg === 'string') return obj.msg;
-    try {
-      return JSON.stringify(err);
-    } catch {
-      return '[unknown error object]';
+    const allKeys = [...Object.keys(obj), ...Object.getOwnPropertyNames(obj)];
+    for (const key of allKeys) {
+      const val = obj[key];
+      if (typeof val === 'string' && val.length > 0) {
+        return `${key}: ${val}`;
       }
     }
+    try {
+      const str = JSON.stringify(err, Object.getOwnPropertyNames(err));
+      if (str !== '{}') return str;
+    } catch {}
+    return `[error object with keys: ${allKeys.join(', ') || 'none'}]`;
+  }
   return String(err);
 }
 
@@ -69,6 +76,14 @@ export class Enclave {
       this.log(`generate: created DID ${output.did}`);
       return output;
     } catch (err) {
+      console.error('[DEBUG] Raw error:', err);
+      console.error('[DEBUG] typeof:', typeof err);
+      console.error('[DEBUG] constructor:', err?.constructor?.name);
+      if (typeof err === 'object' && err !== null) {
+        console.error('[DEBUG] keys:', Object.keys(err));
+        console.error('[DEBUG] ownProps:', Object.getOwnPropertyNames(err));
+        console.error('[DEBUG] prototype:', Object.getPrototypeOf(err));
+      }
       const errMsg = extractErrorMessage(err);
       this.log(`generate: failed - ${errMsg}`, 'error');
       throw new Error(`generate: ${errMsg}`);