chore: initial project setup with backend, frontend, and infrastructure

Add complete NexaPantry application structure including:
- Docker Compose configuration with PostgreSQL, Redis, FastAPI backend, worker, frontend and Caddy
- Environment configuration template with database, auth, and service settings
- GitHub Actions CI workflow for backend/frontend linting, testing, auditing and Docker builds
- AGPL-3.0 license and comprehensive README with setup, development, and security documentation
- Backend

frontend/eslint.config.js

@@ -0,0 +1,23 @@
+import js from '@eslint/js';
+import reactHooks from 'eslint-plugin-react-hooks';
+import reactRefresh from 'eslint-plugin-react-refresh';
+import tseslint from 'typescript-eslint';
+
+export default tseslint.config(
+  { ignores: ['dist'] },
+  js.configs.recommended,
+  ...tseslint.configs.recommended,
+  {
+    files: ['**/*.{ts,tsx}'],
+    plugins: {
+      'react-hooks': reactHooks,
+      'react-refresh': reactRefresh
+    },
+    rules: {
+      ...reactHooks.configs.recommended.rules,
+      'react-hooks/set-state-in-effect': 'off',
+      'react-hooks/exhaustive-deps': 'warn',
+      'react-refresh/only-export-components': 'off'
+    }
+  }
+);