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/resolve-pkg-maps/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) Hiroki Osame <hiroki.osame@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

dev/env/node_modules/resolve-pkg-maps/README.md

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+# resolve-pkg-maps
+
+Utils to resolve `package.json` subpath & conditional [`exports`](https://nodejs.org/api/packages.html#exports)/[`imports`](https://nodejs.org/api/packages.html#imports) in resolvers.
+
+Implements the [ESM resolution algorithm](https://nodejs.org/api/esm.html#resolver-algorithm-specification). Tested [against Node.js](/tests/) for accuracy.
+
+<sub>Support this project by ⭐️ starring and sharing it. [Follow me](https://github.com/privatenumber) to see what other cool projects I'm working on! ❤️</sub>
+
+## Usage
+
+### Resolving `exports`
+
+_utils/package.json_
+```json5
+{
+    // ...
+    "exports": {
+        "./reverse": {
+            "require": "./file.cjs",
+            "default": "./file.mjs"
+        }
+    },
+    // ...
+}
+```
+
+```ts
+import { resolveExports } from 'resolve-pkg-maps'
+
+const [packageName, packageSubpath] = parseRequest('utils/reverse')
+
+const resolvedPaths: string[] = resolveExports(
+    getPackageJson(packageName).exports,
+    packageSubpath,
+    ['import', ...otherConditions]
+)
+// => ['./file.mjs']
+```
+
+### Resolving `imports`
+
+_package.json_
+```json5
+{
+    // ...
+    "imports": {
+        "#supports-color": {
+            "node": "./index.js",
+            "default": "./browser.js"
+        }
+    },
+    // ...
+}
+```
+
+```ts
+import { resolveImports } from 'resolve-pkg-maps'
+
+const resolvedPaths: string[] = resolveImports(
+    getPackageJson('.').imports,
+    '#supports-color',
+    ['node', ...otherConditions]
+)
+// => ['./index.js']
+```
+
+## API
+
+### resolveExports(exports, request, conditions)
+
+Returns: `string[]`
+
+Resolves the `request` based on `exports` and `conditions`. Returns an array of paths (e.g. in case a fallback array is matched).
+
+#### exports
+
+Type:
+```ts
+type Exports = PathOrMap | readonly PathOrMap[]
+
+type PathOrMap = string | PathConditionsMap
+
+type PathConditionsMap = {
+    [condition: string]: PathConditions | null
+}
+```
+
+The [`exports` property](https://nodejs.org/api/packages.html#exports) value in `package.json`.
+
+#### request
+
+Type: `string`
+
+The package subpath to resolve. Assumes a normalized path is passed in (eg. [repeating slashes `//`](https://github.com/nodejs/node/issues/44316)).
+
+It _should not_ start with `/` or `./`.
+
+Example: if the full import path is `some-package/subpath/file`, the request is `subpath/file`.
+
+
+#### conditions
+
+Type: `readonly string[]`
+
+An array of conditions to use when resolving the request. For reference, Node.js's default conditions are [`['node', 'import']`](https://nodejs.org/api/esm.html#:~:text=defaultConditions%20is%20the%20conditional%20environment%20name%20array%2C%20%5B%22node%22%2C%20%22import%22%5D.).
+
+The order of this array does not matter; the order of condition keys in the export map is what matters instead.
+
+Not all conditions in the array need to be met to resolve the request. It just needs enough to resolve to a path.
+
+---
+
+### resolveImports(imports, request, conditions)
+
+Returns: `string[]`
+
+Resolves the `request` based on `imports` and `conditions`. Returns an array of paths (e.g. in case a fallback array is matched).
+
+#### imports
+
+Type:
+```ts
+type Imports = {
+    [condition: string]: PathOrMap | readonly PathOrMap[] | null
+}
+
+type PathOrMap = string | Imports
+```
+
+The [`imports` property](https://nodejs.org/api/packages.html#imports) value in `package.json`.
+
+
+#### request
+
+Type: `string`
+
+The request resolve. Assumes a normalized path is passed in (eg. [repeating slashes `//`](https://github.com/nodejs/node/issues/44316)).
+
+> **Note:** In Node.js, imports resolutions are limited to requests prefixed with `#`. However, this package does not enforce that requirement in case you want to add custom support for non-prefixed entries.
+
+#### conditions
+
+Type: `readonly string[]`
+
+An array of conditions to use when resolving the request. For reference, Node.js's default conditions are [`['node', 'import']`](https://nodejs.org/api/esm.html#:~:text=defaultConditions%20is%20the%20conditional%20environment%20name%20array%2C%20%5B%22node%22%2C%20%22import%22%5D.).
+
+The order of this array does not matter; the order of condition keys in the import map is what matters instead.
+
+Not all conditions in the array need to be met to resolve the request. It just needs enough to resolve to a path.
+
+---
+
+### Errors
+
+#### `ERR_PACKAGE_PATH_NOT_EXPORTED`
+ - If the request is not exported by the export map
+
+#### `ERR_PACKAGE_IMPORT_NOT_DEFINED`
+  - If the request is not defined by the import map
+
+#### `ERR_INVALID_PACKAGE_CONFIG`
+
+  - If an object contains properties that are both paths and conditions (e.g. start with and without `.`)
+  - If an object contains numeric properties 
+  
+#### `ERR_INVALID_PACKAGE_TARGET`
+  - If a resolved exports path is not a valid path (e.g. not relative or has protocol)
+  - If a resolved path includes `..` or `node_modules`
+  - If a resolved path is a type that cannot be parsed
+
+## FAQ
+
+### Why do the APIs return an array of paths?
+
+`exports`/`imports` supports passing in a [fallback array](https://github.com/jkrems/proposal-pkg-exports/#:~:text=Whenever%20there%20is,to%20new%20cases.) to provide fallback paths if the previous one is invalid:
+
+```json5
+{
+    "exports": {
+        "./feature": [
+            "./file.js",
+            "./fallback.js"
+        ]
+    }
+}
+```
+
+Node.js's implementation [picks the first valid path (without attempting to resolve it)](https://github.com/nodejs/node/issues/44282#issuecomment-1220151715) and throws an error if it can't be resolved. Node.js's fallback array is designed for [forward compatibility with features](https://github.com/jkrems/proposal-pkg-exports/#:~:text=providing%20forwards%20compatiblitiy%20for%20new%20features) (e.g. protocols) that can be immediately/inexpensively validated:
+
+```json5
+{
+    "exports": {
+        "./core-polyfill": ["std:core-module", "./core-polyfill.js"]
+    }
+}
+```
+
+However, [Webpack](https://webpack.js.org/guides/package-exports/#alternatives) and [TypeScript](https://github.com/microsoft/TypeScript/blob/71e852922888337ef51a0e48416034a94a6c34d9/src/compiler/moduleSpecifiers.ts#L695) have deviated from this behavior and attempts to resolve the next path if a path cannot be resolved.
+
+By returning an array of matched paths instead of just the first one, the user can decide which behavior to adopt.
+
+### How is it different from [`resolve.exports`](https://github.com/lukeed/resolve.exports)?
+
+`resolve.exports` only resolves `exports`, whereas this package resolves both `exports` & `imports`. This comparison will only cover resolving `exports`.
+
+- Despite it's name, `resolve.exports` handles more than just `exports`. It takes in the entire `package.json` object to handle resolving `.` and [self-references](https://nodejs.org/api/packages.html#self-referencing-a-package-using-its-name). This package only accepts `exports`/`imports` maps from `package.json` and is scoped to only resolving what's defined in the maps.
+
+- `resolve.exports` accepts the full request (e.g. `foo/bar`), whereas this package only accepts the requested subpath (e.g. `bar`).
+
+- `resolve.exports` only returns the first result in a fallback array. This package returns an array of results for the user to decide how to handle it.
+
+- `resolve.exports` supports [subpath folder mapping](https://nodejs.org/docs/latest-v16.x/api/packages.html#subpath-folder-mappings) (deprecated in Node.js v16 & removed in v17) but seems to [have a bug](https://github.com/lukeed/resolve.exports/issues/7). This package does not support subpath folder mapping because Node.js has removed it in favor of using subpath patterns.
+
+- Neither resolvers rely on a file-system
+
+This package also addresses many of the bugs in `resolve.exports`, demonstrated in [this test](/tests/exports/compare-resolve.exports.ts).

dev/env/node_modules/resolve-pkg-maps/dist/index.cjs

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+"use strict";Object.defineProperty(exports,"__esModule",{value:!0});const d=r=>r!==null&&typeof r=="object",s=(r,t)=>Object.assign(new Error(`[${r}]: ${t}`),{code:r}),g="ERR_INVALID_PACKAGE_CONFIG",E="ERR_INVALID_PACKAGE_TARGET",I="ERR_PACKAGE_PATH_NOT_EXPORTED",P="ERR_PACKAGE_IMPORT_NOT_DEFINED",R=/^\d+$/,O=/^(\.{1,2}|node_modules)$/i,u=/\/|\\/;var h=(r=>(r.Export="exports",r.Import="imports",r))(h||{});const f=(r,t,n,o,c)=>{if(t==null)return[];if(typeof t=="string"){const[e,...i]=t.split(u);if(e===".."||i.some(l=>O.test(l)))throw s(E,`Invalid "${r}" target "${t}" defined in the package config`);return[c?t.replace(/\*/g,c):t]}if(Array.isArray(t))return t.flatMap(e=>f(r,e,n,o,c));if(d(t)){for(const e of Object.keys(t)){if(R.test(e))throw s(g,"Cannot contain numeric property keys");if(e==="default"||o.includes(e))return f(r,t[e],n,o,c)}return[]}throw s(E,`Invalid "${r}" target "${t}"`)},a="*",v=(r,t)=>{const n=r.indexOf(a),o=t.indexOf(a);return n===o?t.length>r.length:o>n};function A(r,t){if(!t.includes(a)&&r.hasOwnProperty(t))return[t];let n,o;for(const c of Object.keys(r))if(c.includes(a)){const[e,i,l]=c.split(a);if(l===void 0&&t.startsWith(e)&&t.endsWith(i)){const _=t.slice(e.length,-i.length||void 0);_&&(!n||v(n,c))&&(n=c,o=_)}}return[n,o]}const p=r=>Object.keys(r).reduce((t,n)=>{const o=n===""||n[0]!==".";if(t===void 0||t===o)return o;throw s(g,'"exports" cannot contain some keys starting with "." and some not')},void 0),w=/^\w+:/,m=(r,t,n)=>{if(!r)throw new Error('"exports" is required');t=t===""?".":`./${t}`,(typeof r=="string"||Array.isArray(r)||d(r)&&p(r))&&(r={".":r});const[o,c]=A(r,t),e=f(h.Export,r[o],t,n,c);if(e.length===0)throw s(I,t==="."?'No "exports" main defined':`Package subpath '${t}' is not defined by "exports"`);for(const i of e)if(!i.startsWith("./")&&!w.test(i))throw s(E,`Invalid "exports" target "${i}" defined in the package config`);return e},T=(r,t,n)=>{if(!r)throw new Error('"imports" is required');const[o,c]=A(r,t),e=f(h.Import,r[o],t,n,c);if(e.length===0)throw s(P,`Package import specifier "${t}" is not defined in package`);return e};exports.resolveExports=m,exports.resolveImports=T;

dev/env/node_modules/resolve-pkg-maps/dist/index.d.cts

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+type PathConditionsMap = {
+    [condition: string]: PathConditions | null;
+};
+type PathOrMap = string | PathConditionsMap;
+type PathConditions = PathOrMap | readonly PathOrMap[];
+
+declare const resolveExports: (exports: PathConditions, request: string, conditions: readonly string[]) => string[];
+
+declare const resolveImports: (imports: PathConditionsMap, request: string, conditions: readonly string[]) => string[];
+
+export { PathConditions, PathConditionsMap, resolveExports, resolveImports };

dev/env/node_modules/resolve-pkg-maps/dist/index.d.mts

@@ -0,0 +1,11 @@
+type PathConditionsMap = {
+    [condition: string]: PathConditions | null;
+};
+type PathOrMap = string | PathConditionsMap;
+type PathConditions = PathOrMap | readonly PathOrMap[];
+
+declare const resolveExports: (exports: PathConditions, request: string, conditions: readonly string[]) => string[];
+
+declare const resolveImports: (imports: PathConditionsMap, request: string, conditions: readonly string[]) => string[];
+
+export { PathConditions, PathConditionsMap, resolveExports, resolveImports };

dev/env/node_modules/resolve-pkg-maps/dist/index.mjs

@@ -0,0 +1 @@
+const A=r=>r!==null&&typeof r=="object",a=(r,t)=>Object.assign(new Error(`[${r}]: ${t}`),{code:r}),_="ERR_INVALID_PACKAGE_CONFIG",E="ERR_INVALID_PACKAGE_TARGET",I="ERR_PACKAGE_PATH_NOT_EXPORTED",P="ERR_PACKAGE_IMPORT_NOT_DEFINED",R=/^\d+$/,O=/^(\.{1,2}|node_modules)$/i,w=/\/|\\/;var h=(r=>(r.Export="exports",r.Import="imports",r))(h||{});const f=(r,t,e,o,c)=>{if(t==null)return[];if(typeof t=="string"){const[n,...i]=t.split(w);if(n===".."||i.some(l=>O.test(l)))throw a(E,`Invalid "${r}" target "${t}" defined in the package config`);return[c?t.replace(/\*/g,c):t]}if(Array.isArray(t))return t.flatMap(n=>f(r,n,e,o,c));if(A(t)){for(const n of Object.keys(t)){if(R.test(n))throw a(_,"Cannot contain numeric property keys");if(n==="default"||o.includes(n))return f(r,t[n],e,o,c)}return[]}throw a(E,`Invalid "${r}" target "${t}"`)},s="*",m=(r,t)=>{const e=r.indexOf(s),o=t.indexOf(s);return e===o?t.length>r.length:o>e};function d(r,t){if(!t.includes(s)&&r.hasOwnProperty(t))return[t];let e,o;for(const c of Object.keys(r))if(c.includes(s)){const[n,i,l]=c.split(s);if(l===void 0&&t.startsWith(n)&&t.endsWith(i)){const g=t.slice(n.length,-i.length||void 0);g&&(!e||m(e,c))&&(e=c,o=g)}}return[e,o]}const p=r=>Object.keys(r).reduce((t,e)=>{const o=e===""||e[0]!==".";if(t===void 0||t===o)return o;throw a(_,'"exports" cannot contain some keys starting with "." and some not')},void 0),u=/^\w+:/,v=(r,t,e)=>{if(!r)throw new Error('"exports" is required');t=t===""?".":`./${t}`,(typeof r=="string"||Array.isArray(r)||A(r)&&p(r))&&(r={".":r});const[o,c]=d(r,t),n=f(h.Export,r[o],t,e,c);if(n.length===0)throw a(I,t==="."?'No "exports" main defined':`Package subpath '${t}' is not defined by "exports"`);for(const i of n)if(!i.startsWith("./")&&!u.test(i))throw a(E,`Invalid "exports" target "${i}" defined in the package config`);return n},T=(r,t,e)=>{if(!r)throw new Error('"imports" is required');const[o,c]=d(r,t),n=f(h.Import,r[o],t,e,c);if(n.length===0)throw a(P,`Package import specifier "${t}" is not defined in package`);return n};export{v as resolveExports,T as resolveImports};

dev/env/node_modules/resolve-pkg-maps/package.json

@@ -0,0 +1,42 @@
+{
+  "name": "resolve-pkg-maps",
+  "version": "1.0.0",
+  "description": "Resolve package.json exports & imports maps",
+  "keywords": [
+    "node.js",
+    "package.json",
+    "exports",
+    "imports"
+  ],
+  "license": "MIT",
+  "repository": "privatenumber/resolve-pkg-maps",
+  "funding": "https://github.com/privatenumber/resolve-pkg-maps?sponsor=1",
+  "author": {
+    "name": "Hiroki Osame",
+    "email": "hiroki.osame@gmail.com"
+  },
+  "type": "module",
+  "files": [
+    "dist"
+  ],
+  "main": "./dist/index.cjs",
+  "module": "./dist/index.mjs",
+  "types": "./dist/index.d.cts",
+  "exports": {
+    "require": {
+      "types": "./dist/index.d.cts",
+      "default": "./dist/index.cjs"
+    },
+    "import": {
+      "types": "./dist/index.d.mts",
+      "default": "./dist/index.mjs"
+    }
+  },
+  "imports": {
+    "#resolve-pkg-maps": {
+      "types": "./src/index.ts",
+      "development": "./src/index.ts",
+      "default": "./dist/index.mjs"
+    }
+  }
+}