chore: Add new configuration files and enhance linting integration

This commit introduces several new configuration files, including `.editorconfig`, `.oxlintrc.json`, and updates to existing files like `package.json` and `pnpm-lock.yaml`. It also enhances the linting integration across the codebase, ensuring consistent code quality and adherence to standards. Additionally, the README is updated to reflect these changes, providing clearer guidance for developers on the new configurations.

Author: Oba-One

.editorconfig

@@ -0,0 +1,42 @@
+# EditorConfig helps maintain consistent coding styles across editors
+# https://editorconfig.org
+
+root = true
+
+# Universal settings
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+# TypeScript, JavaScript, React
+[*.{ts,tsx,js,jsx,mjs,cjs}]
+indent_style = space
+indent_size = 2
+
+# Solidity
+[*.sol]
+indent_style = space
+indent_size = 4
+
+# JSON, YAML
+[*.{json,yml,yaml}]
+indent_style = space
+indent_size = 2
+
+# Markdown
+[*.md]
+trim_trailing_whitespace = false
+indent_style = space
+indent_size = 2
+
+# Shell scripts
+[*.sh]
+indent_style = space
+indent_size = 2
+
+# Makefiles
+[Makefile]
+indent_style = tab
+

.oxlintrc.json

@@ -0,0 +1,13 @@
+{
+  "rules": {
+    "typescript/no-unused-vars": "error",
+    "react/react-hooks-exhaustive-deps": "error",
+    "react/rules-of-hooks": "error",
+    "react/jsx-no-unescaped-entities": "error"
+  },
+  "ignorePatterns": [
+    "e2e/playwright-report/**",
+    "e2e/test-results/**"
+  ]
+}
+

README.md

@@ -6,7 +6,8 @@ Decentralized funding pools with smart access control. Create shared ETH/ERC20 p
 
 **Manual Install**: Node.js 18+, Git  
 **Auto-Install**: pnpm, Foundry *(installed automatically)*  
-**System**: 4GB+ RAM, 2GB storage
+**System**: 4GB+ RAM, 2GB storage  
+**Editor**: VS Code or Cursor *(recommended for inline linting)*
 
 > ⚠️ **Note on Submodules**: This repository uses git submodules for Foundry dependencies. If you encounter SSH errors during `pnpm install`, see the [Submodule/Foundry Setup Issues](#submodulefoundry-setup-issues) section for quick HTTPS workaround or SSH setup instructions.
 
@@ -37,6 +38,17 @@ Open http://localhost:3000 and explore 4 pre-seeded demo jars with Cookie Monste
 > 
 > **💡 Note**: If you don't have pnpm installed, Option 1 installs it for you. If you already have pnpm, use Option 2.
 
+### 🎨 Editor Setup (Recommended)
+
+For the best development experience with **inline linting errors** and **auto-fix on save**:
+
+1. Open workspace in VS Code or Cursor
+2. Install recommended extensions when prompted (ESLint, Prettier, Solidity)
+3. Reload window to activate linting
+4. Errors now appear inline as you code!
+
+See [docs/DEVELOPMENT.md](docs/DEVELOPMENT.md#editor-setup) for details.
+
 ## 💻 Development
 
 ```bash

biome.json

@@ -0,0 +1,84 @@
+{
+  "$schema": "https://biomejs.dev/schemas/2.2.5/schema.json",
+  "vcs": {
+    "enabled": true,
+    "clientKind": "git",
+    "useIgnoreFile": true
+  },
+  "files": {
+    "ignoreUnknown": false,
+    "includes": ["client/**/*", "e2e/**/*.ts", "client/**/*.css"]
+  },
+  "css": {
+    "formatter": {
+      "enabled": true,
+      "quoteStyle": "double"
+    },
+    "linter": {
+      "enabled": true
+    }
+  },
+  "formatter": {
+    "enabled": true,
+    "formatWithErrors": false,
+    "indentStyle": "space",
+    "indentWidth": 2,
+    "lineWidth": 80,
+    "lineEnding": "lf"
+  },
+  "linter": {
+    "enabled": true,
+    "rules": {
+      "recommended": true,
+      "correctness": {
+        "noUnusedVariables": "error",
+        "useExhaustiveDependencies": "error",
+        "useHookAtTopLevel": "error"
+      },
+      "style": {
+        "useConst": "error"
+      },
+      "suspicious": {
+        "noExplicitAny": "warn",
+        "noUnknownAtRules": "off"
+      },
+      "a11y": {
+        "recommended": true
+      }
+    }
+  },
+  "javascript": {
+    "formatter": {
+      "quoteStyle": "single",
+      "jsxQuoteStyle": "double",
+      "trailingCommas": "es5",
+      "semicolons": "always",
+      "arrowParentheses": "always",
+      "bracketSpacing": true,
+      "quoteProperties": "asNeeded"
+    }
+  },
+  "json": {
+    "formatter": {
+      "enabled": true
+    }
+  },
+  "overrides": [
+    {
+      "includes": [
+        "**/__tests__/**",
+        "**/*.test.ts",
+        "**/*.test.tsx",
+        "**/*.spec.ts",
+        "e2e/**/*.ts"
+      ],
+      "linter": {
+        "rules": {
+          "suspicious": {
+            "noExplicitAny": "off"
+          }
+        }
+      }
+    }
+  ]
+}

client/.eslintrc.json

@@ -1,11 +1,15 @@
 {
   "extends": ["next/core-web-vitals"],
+  "parserOptions": {
+    "ecmaVersion": "latest",
+    "sourceType": "module"
+  },
   "rules": {
-    "no-unused-vars": "warn",
+    "no-unused-vars": "error",
     "no-console": "warn",
-    "react/no-unescaped-entities": "warn",
-    "@next/next/no-img-element": "warn",
-    "react-hooks/exhaustive-deps": "warn",
+    "react/no-unescaped-entities": "error",
+    "@next/next/no-img-element": "error",
+    "react-hooks/exhaustive-deps": "error",
     "react-hooks/rules-of-hooks": "error"
   }
 }

client/.oxlintrc.json

@@ -0,0 +1,8 @@
+{
+  "rules": {
+    "typescript/no-unused-vars": "error",
+    "react/react-hooks-exhaustive-deps": "error",
+    "react/rules-of-hooks": "error",
+    "react/jsx-no-unescaped-entities": "error"
+  }
+}