Bring repo up to REPO_POLICIES.md standards

- Add prettier (4-space indents) and reformat all files
- Add Makefile with test/lint/fmt/fmt-check/check/docker targets
- Add MIT LICENSE file
- Add REPO_POLICIES.md
- Fix Dockerfile: listen on 8080 with PORT env var via envsubst
- Restructure README.md with all required sections
- Set up pre-commit hook (make check)
- Update .prettierignore, .gitignore, .dockerignore

package.json

@@ -1,19 +1,20 @@
 {
-  "name": "netwatch",
-  "version": "1.0.0",
-  "description": "Real-time network latency monitor SPA",
-  "type": "module",
-  "scripts": {
-    "dev": "vite",
-    "build": "vite build",
-    "preview": "vite preview"
-  },
-  "license": "MIT",
-  "devDependencies": {
-    "@tailwindcss/vite": "^4.1.18",
-    "autoprefixer": "^10.4.23",
-    "postcss": "^8.5.6",
-    "tailwindcss": "^4.1.18",
-    "vite": "^7.3.1"
-  }
+    "name": "netwatch",
+    "version": "1.0.0",
+    "description": "Real-time network latency monitor SPA",
+    "type": "module",
+    "scripts": {
+        "dev": "vite",
+        "build": "vite build",
+        "preview": "vite preview"
+    },
+    "license": "MIT",
+    "devDependencies": {
+        "@tailwindcss/vite": "^4.1.18",
+        "autoprefixer": "^10.4.23",
+        "postcss": "^8.5.6",
+        "prettier": "^3.8.1",
+        "tailwindcss": "^4.1.18",
+        "vite": "^7.3.1"
+    }
 }