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/lib.esm/utils/base58.js

@@ -0,0 +1,63 @@
+/**
+ *  The [Base58 Encoding](link-base58) scheme allows a **numeric** value
+ *  to be encoded as a compact string using a radix of 58 using only
+ *  alpha-numeric characters. Confusingly similar characters are omitted
+ *  (i.e. ``"l0O"``).
+ *
+ *  Note that Base58 encodes a **numeric** value, not arbitrary bytes,
+ *  since any zero-bytes on the left would get removed. To mitigate this
+ *  issue most schemes that use Base58 choose specific high-order values
+ *  to ensure non-zero prefixes.
+ *
+ *  @_subsection: api/utils:Base58 Encoding [about-base58]
+ */
+import { getBytes } from "./data.js";
+import { assertArgument } from "./errors.js";
+import { toBigInt } from "./maths.js";
+const Alphabet = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
+let Lookup = null;
+function getAlpha(letter) {
+    if (Lookup == null) {
+        Lookup = {};
+        for (let i = 0; i < Alphabet.length; i++) {
+            Lookup[Alphabet[i]] = BigInt(i);
+        }
+    }
+    const result = Lookup[letter];
+    assertArgument(result != null, `invalid base58 value`, "letter", letter);
+    return result;
+}
+const BN_0 = BigInt(0);
+const BN_58 = BigInt(58);
+/**
+ *  Encode %%value%% as a Base58-encoded string.
+ */
+export function encodeBase58(_value) {
+    const bytes = getBytes(_value);
+    let value = toBigInt(bytes);
+    let result = "";
+    while (value) {
+        result = Alphabet[Number(value % BN_58)] + result;
+        value /= BN_58;
+    }
+    // Account for leading padding zeros
+    for (let i = 0; i < bytes.length; i++) {
+        if (bytes[i]) {
+            break;
+        }
+        result = Alphabet[0] + result;
+    }
+    return result;
+}
+/**
+ *  Decode the Base58-encoded %%value%%.
+ */
+export function decodeBase58(value) {
+    let result = BN_0;
+    for (let i = 0; i < value.length; i++) {
+        result *= BN_58;
+        result += getAlpha(value[i]);
+    }
+    return result;
+}
+//# sourceMappingURL=base58.js.map