build(deps): add react-router-dom

Install react-router-dom to support client-side navigation. This is a prerequisite for implementing the multi-step authentication flow and other routed features.

Additionally, this commit includes minor copy improvements to the password reset forms for better clarity.

memory-bank/techContext.md

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+# Tech Context
+
+This document describes the technologies used, development setup, technical constraints, dependencies, and tool usage patterns.
+
+## Technologies Used
+
+-   **Frontend:** React 19, Vite
+-   **Styling:** Tailwind CSS, PostCSS
+-   **Linting:** ESLint
+-   **HTTP Client:** Axios
+
+## Development Setup
+
+-   Run `npm install` to install dependencies.
+-   Run `npm run dev` to start the development server.
+
+## Technical Constraints
+
+-   Single Page Application (SPA) architecture.
+
+## Dependencies
+
+### Production
+-   `axios`: For making HTTP requests.
+-   `react`: For building the user interface.
+-   `react-dom`: For rendering React components in the DOM.
+-   `react-router-dom`: For routing.
+
+### Development
+-   `@vitejs/plugin-react`: Vite plugin for React.
+-   `autoprefixer`: PostCSS plugin to parse CSS and add vendor prefixes.
+-   `eslint`: For linting JavaScript code.
+-   `tailwindcss`: A utility-first CSS framework.
+-   `vite`: A build tool that aims to provide a faster and leaner development experience for modern web projects.
+
+## Tool Usage Patterns
+
+-   Vite is used for the development server and build process.
+-   ESLint is used for code quality and consistency.
+-   Tailwind CSS is used for styling.