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/ethers/src.ts/abi/coders/tuple.ts

@@ -0,0 +1,69 @@
+import { defineProperties } from "../../utils/properties.js";
+
+import { Typed } from "../typed.js";
+import { Coder } from "./abstract-coder.js";
+
+import { pack, unpack } from "./array.js";
+
+import type { Reader, Writer } from "./abstract-coder.js";
+
+/**
+ *  @_ignore
+ */
+export class TupleCoder extends Coder {
+    readonly coders!: ReadonlyArray<Coder>;
+
+    constructor(coders: Array<Coder>, localName: string) {
+        let dynamic = false;
+        const types: Array<string> = [];
+        coders.forEach((coder) => {
+            if (coder.dynamic) { dynamic = true; }
+            types.push(coder.type);
+        });
+        const type = ("tuple(" + types.join(",") + ")");
+
+        super("tuple", type, localName, dynamic);
+        defineProperties<TupleCoder>(this, { coders: Object.freeze(coders.slice()) });
+    }
+
+    defaultValue(): any {
+        const values: any = [ ];
+        this.coders.forEach((coder) => {
+            values.push(coder.defaultValue());
+        });
+
+        // We only output named properties for uniquely named coders
+        const uniqueNames = this.coders.reduce((accum, coder) => {
+            const name = coder.localName;
+            if (name) {
+                if (!accum[name]) { accum[name] = 0; }
+                accum[name]++;
+            }
+            return accum;
+        }, <{ [ name: string ]: number }>{ });
+
+        // Add named values
+        this.coders.forEach((coder: Coder, index: number) => {
+            let name = coder.localName;
+            if (!name || uniqueNames[name] !== 1) { return; }
+
+            if (name === "length") { name = "_length"; }
+
+            if (values[name] != null) { return; }
+
+            values[name] = values[index];
+        });
+
+        return Object.freeze(values);
+    }
+
+    encode(writer: Writer, _value: Array<any> | { [ name: string ]: any } | Typed): number {
+        const value = Typed.dereference(_value, "tuple");
+        return pack(writer, this.coders, value);
+    }
+
+    decode(reader: Reader): any {
+        return unpack(reader, this.coders);
+    }
+}
+