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/@noble/hashes/sha1.js

@@ -0,0 +1,90 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.sha1 = void 0;
+const _sha2_js_1 = require("./_sha2.js");
+const utils_js_1 = require("./utils.js");
+// SHA1 was cryptographically broken.
+// It is still widely used in legacy apps. Don't use it for a new protocol.
+// RFC 3174
+const rotl = (word, shift) => (word << shift) | ((word >>> (32 - shift)) >>> 0);
+// Choice: a ? b : c
+const Chi = (a, b, c) => (a & b) ^ (~a & c);
+// Majority function, true if any two inpust is true
+const Maj = (a, b, c) => (a & b) ^ (a & c) ^ (b & c);
+// Initial state
+const IV = /* @__PURE__ */ new Uint32Array([
+    0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0,
+]);
+// Temporary buffer, not used to store anything between runs
+// Named this way because it matches specification.
+const SHA1_W = /* @__PURE__ */ new Uint32Array(80);
+class SHA1 extends _sha2_js_1.SHA2 {
+    constructor() {
+        super(64, 20, 8, false);
+        this.A = IV[0] | 0;
+        this.B = IV[1] | 0;
+        this.C = IV[2] | 0;
+        this.D = IV[3] | 0;
+        this.E = IV[4] | 0;
+    }
+    get() {
+        const { A, B, C, D, E } = this;
+        return [A, B, C, D, E];
+    }
+    set(A, B, C, D, E) {
+        this.A = A | 0;
+        this.B = B | 0;
+        this.C = C | 0;
+        this.D = D | 0;
+        this.E = E | 0;
+    }
+    process(view, offset) {
+        for (let i = 0; i < 16; i++, offset += 4)
+            SHA1_W[i] = view.getUint32(offset, false);
+        for (let i = 16; i < 80; i++)
+            SHA1_W[i] = rotl(SHA1_W[i - 3] ^ SHA1_W[i - 8] ^ SHA1_W[i - 14] ^ SHA1_W[i - 16], 1);
+        // Compression function main loop, 80 rounds
+        let { A, B, C, D, E } = this;
+        for (let i = 0; i < 80; i++) {
+            let F, K;
+            if (i < 20) {
+                F = Chi(B, C, D);
+                K = 0x5a827999;
+            }
+            else if (i < 40) {
+                F = B ^ C ^ D;
+                K = 0x6ed9eba1;
+            }
+            else if (i < 60) {
+                F = Maj(B, C, D);
+                K = 0x8f1bbcdc;
+            }
+            else {
+                F = B ^ C ^ D;
+                K = 0xca62c1d6;
+            }
+            const T = (rotl(A, 5) + F + E + K + SHA1_W[i]) | 0;
+            E = D;
+            D = C;
+            C = rotl(B, 30);
+            B = A;
+            A = T;
+        }
+        // Add the compressed chunk to the current hash value
+        A = (A + this.A) | 0;
+        B = (B + this.B) | 0;
+        C = (C + this.C) | 0;
+        D = (D + this.D) | 0;
+        E = (E + this.E) | 0;
+        this.set(A, B, C, D, E);
+    }
+    roundClean() {
+        SHA1_W.fill(0);
+    }
+    destroy() {
+        this.set(0, 0, 0, 0, 0);
+        this.buffer.fill(0);
+    }
+}
+exports.sha1 = (0, utils_js_1.wrapConstructor)(() => new SHA1());
+//# sourceMappingURL=sha1.js.map