refactor: move brother_node development artifact to dev/test-nodes subdirectory

Development Artifact Cleanup:
✅ BROTHER_NODE REORGANIZATION: Moved development test node to appropriate location
- dev/test-nodes/brother_node/: Moved from root directory for better organization
- Contains development configuration, test logs, and test chain data
- No impact on production systems - purely development/testing artifact

✅ DEVELOPMENT ARTIFACTS IDENTIFIED:
- Chain ID: aitbc-brother-chain (test/development chain)
- Ports: 8010 (P2P) and 8011 (RPC) - different from production
- Environment: .env file with test configuration
- Logs: rpc.log and node.log from development testing session (March 15, 2026)

✅ ROOT DIRECTORY CLEANUP: Removed development clutter from production directory
- brother_node/ moved to dev/test-nodes/brother_node/
- Root directory now contains only production-ready components
- Development artifacts properly organized in dev/ subdirectory

DIRECTORY STRUCTURE IMPROVEMENT:
📁 dev/test-nodes/: Development and testing node configurations
🏗️ Root Directory: Clean production structure with only essential components
🧪 Development Isolation: Test environments separated from production

BENEFITS:
✅ Clean Production Directory: No development artifacts in root
✅ Better Organization: Development nodes grouped in dev/ subdirectory
✅ Clear Separation: Production vs development environments clearly distinguished
✅ Maintainability: Easier to identify and manage development components

RESULT: Successfully moved brother_node development artifact to dev/test-nodes/ subdirectory, cleaning up the root directory while preserving development testing environment for future use.

dev/env/node_modules/zod/v4/classic/errors.js

@@ -0,0 +1,41 @@
+import * as core from "../core/index.js";
+import { $ZodError } from "../core/index.js";
+const initializer = (inst, issues) => {
+    $ZodError.init(inst, issues);
+    inst.name = "ZodError";
+    Object.defineProperties(inst, {
+        format: {
+            value: (mapper) => core.formatError(inst, mapper),
+            // enumerable: false,
+        },
+        flatten: {
+            value: (mapper) => core.flattenError(inst, mapper),
+            // enumerable: false,
+        },
+        addIssue: {
+            value: (issue) => inst.issues.push(issue),
+            // enumerable: false,
+        },
+        addIssues: {
+            value: (issues) => inst.issues.push(...issues),
+            // enumerable: false,
+        },
+        isEmpty: {
+            get() {
+                return inst.issues.length === 0;
+            },
+            // enumerable: false,
+        },
+    });
+    // Object.defineProperty(inst, "isEmpty", {
+    //   get() {
+    //     return inst.issues.length === 0;
+    //   },
+    // });
+};
+export const ZodError = core.$constructor("ZodError", initializer);
+export const ZodRealError = core.$constructor("ZodError", initializer, {
+    Parent: Error,
+});
+// /** @deprecated Use `z.core.$ZodErrorMapCtx` instead. */
+// export type ErrorMapCtx = core.$ZodErrorMapCtx;