Use Root Path

[jbouder]

Description

• Use fastapi root_path for prefix.

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

[Copilot]

Pull Request Overview

This PR refactors the API path configuration to use FastAPI's root_path parameter instead of manually prefixing each router. This change simplifies router definitions by removing the need for the API_PREFIX setting at the router level, replacing it with a ROOT_PATH setting applied once at the FastAPI application initialization.

Key changes:

• Replaced API_PREFIX with ROOT_PATH in application settings
• Applied root_path parameter when initializing the FastAPI application
• Simplified all router prefix definitions to use relative paths

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
app/config.py	Renamed API_PREFIX setting to ROOT_PATH
app/main.py	Added logic to set FastAPI root_path from settings
app/health/router.py	Removed settings import and simplified router prefix
app/cases/router.py	Removed settings import and simplified router prefix
app/applicants/router.py	Simplified router prefix to use relative path
app/admin/router.py	Simplified router prefix to use relative path
README.md	Updated documentation to reference ROOT_PATH instead of API_PREFIX

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