Remove Settings and Setup pages along with their tests and related API services

- Deleted Settings.tsx and Setup.tsx pages, which included functionality for changing passwords and setting up an admin account.
- Removed associated test files for Setup page.
- Eliminated API service definitions related to proxy hosts, remote servers, import functionality, and health checks.
- Cleaned up mock data and test setup files.
- Removed configuration files for TypeScript, Vite, and Tailwind CSS.
- Deleted scripts for testing coverage, release management, Dockerfile validation, and Python compilation checks.
- Removed Sourcery pre-commit wrapper script.

tools/python_compile_check.sh

@@ -1,12 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-# Run python -m compileall quietly to catch syntax errors in the repo.
-if command -v python3 &>/dev/null; then
-    python3 -m compileall -q .
-elif command -v python &>/dev/null; then
-    python -m compileall -q .
-else
-    echo "Error: neither python3 nor python found."
-    exit 1
-fi