fix: Remove unused declarations (unused_element, unused_field, unused_local_variable)

[Muneerali199]

Summary

flutter analyze reports several unused declaration warnings across both apps. Unused code is dead weight — it confuses readers and can indicate logic that was never wired up correctly.

Affected Declarations

patient app

File	Symbol	Kind
lib/presentation/activities/daily_activities_screen.dart:41	_animateProgress	unused_element (private method)
lib/provider/appointments_provider.dart:151	_formatTimeOfDay	unused_element (private method)
lib/provider/task_provider.dart:9	_apiStatus	unused_field (private field)

therapist app

File	Symbol	Kind
lib/presentation/auth/auth_screen.dart:48	isNewUser	unused_local_variable
lib/presentation/consultation/consultation_request_detail_screen.dart:375	_buildNotesSection	unused_element (private method)
lib/presentation/consultation/consultation_request_detail_screen.dart:483	_buildDetailRow	unused_element (private method)
lib/presentation/home/home_screen.dart:286	_buildConsultationRequestSection	unused_element (private method)
lib/presentation/therapy_goals/add_therapy_details_screen.dart:235	key parameter	unused_element_parameter

Steps to Reproduce

cd patient && flutter analyze
cd ../therapist && flutter analyze

Fix

• Remove unused private methods, fields, and local variables.
• For the unused key parameter: remove the optional parameter or use it correctly.