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/@streamparser/json-node/test/selectors.ts

@@ -0,0 +1,92 @@
+import { runJSONParserTest, type TestData } from "./utils/testRunner.js";
+import JSONParser from "../src/jsonparser.js";
+
+describe("selectors", () => {
+  const testData: TestData[] = [
+    { value: "[0,1,-1]", paths: ["$"], expected: [[0, 1, -1]] },
+    { value: "[0,1,-1]", paths: ["$.*"], expected: [0, 1, -1] },
+    { value: "[0,1,-1]", expected: [0, 1, -1, [0, 1, -1]] },
+    { value: "[0,1,-1]", paths: ["$*"], expected: [0, 1, -1, [0, 1, -1]] },
+    {
+      value: "[0,1,[-1, 2]]",
+      paths: ["$", "$.*"],
+      expected: [0, 1, [-1, 2], [0, 1, [-1, 2]]],
+    },
+    { value: "[0,1,-1]", paths: ["$.1"], expected: [1] },
+    {
+      value: '{ "a": { "b": 1, "c": 2 } }',
+      paths: ["$.a.*"],
+      expected: [1, 2],
+    },
+    { value: '{ "a": { "b": 1, "c": 2 } }', paths: ["$.a.c"], expected: [2] },
+    {
+      value: '{ "a": { "b": [1,2], "c": [3, 4] } }',
+      paths: ["$.a.*.*"],
+      expected: [1, 2, 3, 4],
+    },
+    {
+      value: '{ "a": { "b": [1,2], "c": [3, 4] } }',
+      paths: ["$.a.*.1"],
+      expected: [2, 4],
+    },
+    {
+      value: '{ "a": { "b": [1,2], "c": [3, 4] } }',
+      paths: ["$.a.c.*"],
+      expected: [3, 4],
+    },
+    {
+      value: '{ "a": { "b": [1,2], "c": [3, 4] } }',
+      paths: ["$.a.c.1"],
+      expected: [4],
+    },
+    {
+      value: '{ "a": [ {"b": 1}, {"c": 2} ] }',
+      paths: ["$.a.0.b"],
+      expected: [1],
+    },
+  ];
+
+  testData.forEach(({ value, paths, expected }) => {
+    test(`Using selector ${paths} should emit only selected values`, async () => {
+      let i = 0;
+
+      await runJSONParserTest(
+        new JSONParser({ paths }),
+        [value],
+        ({ value }) => {
+          expect(value).toEqual(expected[i]);
+          i += 1;
+        },
+      );
+
+      expect(i).toEqual(expected.length);
+    });
+  });
+
+  const invalidTestData = [
+    {
+      paths: ["*"],
+      expectedError: 'Invalid selector "*". Should start with "$".',
+    },
+    {
+      paths: [".*"],
+      expectedError: 'Invalid selector ".*". Should start with "$".',
+    },
+    {
+      paths: ["$..*"],
+      expectedError: 'Invalid selector "$..*". ".." syntax not supported.',
+    },
+  ];
+
+  invalidTestData.forEach(({ paths, expectedError }) => {
+    test(`fail on invalid selector ${paths}`, () => {
+      try {
+        new JSONParser({ paths });
+        fail("Error expected on invalid selector");
+      } catch (err: unknown) {
+        expect(err).toBeInstanceOf(Error);
+        expect((err as Error).message).toEqual(expectedError);
+      }
+    });
+  });
+});