Add unit converter components and corresponding routes

[Barata-Ribeiro]

This pull request adds four new unit converter tools (Mass, Speed, Temperature, and Time) to the application, each with its own UI, conversion logic, and documentation. It also registers the new routes so they are accessible from the app's navigation. These converters allow users to easily convert between various units for each category, with user-friendly input handling and explanations for each unit.

New converters and their UIs:

• Added a Mass converter supporting conversions between tonnes, kilograms, grams, milligrams, micrograms, UK/US tons, pounds, ounces, and stones, with a detailed explanation and usage tips. (app/components/pages/converters/mass.tsx, app/routes/converters/mass.tsx) [1] [2]
• Added a Speed converter supporting kilometers per hour, miles per hour, meters per second, feet per second, knots, and Mach, with explanations for each unit. (app/components/pages/converters/speed.tsx, app/routes/converters/speed.tsx) [1] [2]
• Added a Temperature converter supporting Fahrenheit, Celsius, and Kelvin, with logic for converting between all three. (app/components/pages/converters/temperature.tsx)
• Added a Time converter supporting nanoseconds up to centuries, with logic for converting between all units. (app/components/pages/converters/time.tsx)

Routing:

• Registered the new converters in the app's route configuration so they are accessible via /mass, /speed, /temperature, and /time. (app/routes.ts)

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
utilities-webapp	Ignored		Jun 26, 2026 9:15am