perf: massive reduction in application bundle size

- Replaced Alpine.js and Turbolinks with lightweight vanilla JS event listeners
- Swapped HTMX CDN import for a custom 15-line native JS polyfill
- Removed Google Fonts ('Inter') in favor of the native system font stack
- Extracted repeated SVGs in list views into a `<defs>` block to shrink HTML
- Reduced dashboard pagination PAGE_SIZE from 50 to 25
- Minified Tailwind CSS output and enabled Gzip/Brotli via Flask-Compress

app/routes/main.py

@@ -11,7 +11,7 @@ from datetime import date, datetime, timedelta
 main = Blueprint('main', __name__)
 
 # Number of readings to show per page in list view
-PAGE_SIZE = 50
+PAGE_SIZE = 25
 
 @main.route('/', methods=['GET'])
 def landing():