chore: add code formatting and linting

.flake8

@@ -0,0 +1,14 @@
+[flake8]
+max-line-length = 88
+ignore = E203, E266, E501, W503
+exclude = 
+    .git,
+    __pycache__,
+    node_modules,
+    migrations,
+    app/static,
+    tests,
+    .venv,
+    .devcontainer
+per-file-ignores =
+    app.py: E402, F403

.husky/commit-msg

@@ -1 +1 @@
-npx --no-install commitlint --edit '$1'
+npx --no-install commitlint --edit "$1"

.husky/pre-commit

@@ -0,0 +1 @@
+npx lint-staged

.prettierignore

@@ -0,0 +1,16 @@
+# Ignore specific directories
+node_modules/*
+.github/*
+.vscode/*
+.git/*
+.devcontainer/*
+.husky/*
+
+# Ignore specific files
+package.json
+package-lock.json
+.gitignore
+.prettierrc.cjs
+.prettierignore
+eslint.config.mjs
+.flake8

.prettierrc.cjs

@@ -0,0 +1,23 @@
+module.exports = {
+    semi: true,
+    tabWidth: 2, 
+    useTabs: false, 
+    singleQuote: true,
+    trailingComma: 'es5',
+    bracketSpacing: true,
+    arrowParens: 'always',
+    endOfLine: 'lf',
+    printWidth: 80,
+    htmlWhitespaceSensitivity: 'ignore',
+    cssWhitespaceSensitivity: 'strict', 
+    proseWrap: 'preserve',
+    overrides: [
+      {
+        files: '*.html',
+        options: {
+          printWidth: 120,
+        },
+      },
+    ],
+  };
+

commitlint.config.js

@@ -0,0 +1 @@
+module.exports = { extends: ["@commitlint/config-conventional"] };

eslint.config.mjs

@@ -0,0 +1,59 @@
+import globals from "globals";
+import pluginJs from "@eslint/js";
+import prettier from "eslint-plugin-prettier";
+
+export default [
+  {
+    ignores: [
+      "**/node_modules/**",
+      "**/.github/**",
+      "**/.vscode/**",
+      "**/.git/**",
+      "**/.devcontainer/**",
+      "**/.husky/**",
+      "**/package.json",
+      "**/package-lock.json",
+      "**/.eslintignore",
+      "**/.prettierrc.cjs",
+      "**/migrations/**",
+      "**/tests/**",
+    ],
+  },
+  {
+    languageOptions: { globals: globals.browser },
+  },
+  pluginJs.configs.recommended,
+  {
+    files: ['**/*.js'],
+    linterOptions: {
+      noInlineConfig: true,
+    },
+    plugins: { prettier },
+    rules: {
+      "prettier/prettier": "error",
+      semi: ["error", "always"],
+      quotes: ["error", "single"],
+      "comma-dangle": ["error", "always-multiline"],
+      indent: ["error", 2],
+      "lines-around-comment": ["error", { beforeBlockComment: true }],
+      "no-unused-vars": [
+        "error",
+        { vars: "all", args: "none", ignoreRestSiblings: false },
+      ],
+      "no-extra-semi": "error",
+      "no-console": "warn",
+      "object-curly-spacing": ["error", "always"],
+      "space-in-parens": ["error", "never"],
+      camelcase: ["error", { properties: "always" }],
+      "function-call-argument-newline": ["error", "consistent"],
+    },
+  },
+  {
+    files: ['**/*.html'],
+    rules: {
+      semi: ["error", "always"],
+      quotes: ["error", "double"],
+      indent: ["error", 2],
+    },
+  },
+];