feat(auth): implement user authentication and profile management

- Added authentication context and provider to manage user state.
- Created login and registration forms with validation and error handling.
- Implemented user profile component for updating user information and changing passwords.
- Introduced user settings in the database for notification preferences.
- Updated translations for authentication-related strings in English and German.
- Enhanced styles for authentication components and user profile.
- Added middleware for optional and required authentication checks.

frontend/src/i18n/en.json

@@ -58,6 +58,8 @@
     "pills": "Pills",
     "days": "Days",
     "currentPills": "Current pills",
+    "fullBlisters": "Full blisters",
+    "openBlister": "Open blister",
     "daysLeft": "Days left",
     "status": "Stock",
     "runsOut": "Runs out",
@@ -218,6 +220,35 @@
     "takenBy": "taken by",
     "markAsTaken": "Mark as taken"
   },
+  "auth": {
+    "login": "Login",
+    "logout": "Logout",
+    "register": "Create Account",
+    "createAdmin": "Create Admin Account",
+    "profile": "Profile",
+    "username": "Username",
+    "password": "Password",
+    "email": "Email",
+    "confirmPassword": "Confirm Password",
+    "currentPassword": "Current Password",
+    "newPassword": "New Password",
+    "changePassword": "Change Password",
+    "forgotPassword": "Forgot password?",
+    "sendResetLink": "Send Reset Link",
+    "resetPassword": "Reset Password",
+    "backToLogin": "Back to Login",
+    "createAccount": "Create account",
+    "alreadyHaveAccount": "Already have an account? Login",
+    "firstUserInfo": "This will be the administrator account.",
+    "usernameHint": "Letters, numbers, underscores, and hyphens only",
+    "emailHint": "For password recovery",
+    "passwordMismatch": "Passwords do not match",
+    "checkEmail": "Check your email",
+    "resetEmailSent": "If an account with this email exists, we've sent a password reset link.",
+    "passwordReset": "Password Reset",
+    "passwordResetSuccess": "Your password has been reset. Redirecting to login...",
+    "profileUpdated": "Profile updated successfully"
+  },
   "common": {
     "loading": "Loading...",
     "sending": "Sending...",
@@ -235,9 +266,16 @@
     "optional": "optional",
     "pill": "pill",
     "pills": "pills",
+    "of": "of",
+    "loose": "loose",
+    "none": "None",
     "day": "day",
     "days": "days",
+    "blister": "blister",
     "blisters": "blisters",
+    "fullBlister": "full blister",
+    "fullBlisters": "full blisters",
+    "inBlister": "in 1 blister",
     "total": "total"
   }
 }