feat: add Settings and Setup pages for user management

- Implemented Settings page for changing user passwords with validation and feedback.
- Created Setup page for initial admin account setup with form handling and navigation.
- Added API service layer for handling requests related to proxy hosts, remote servers, and import functionality.
- Introduced mock data for testing purposes and set up testing framework with vitest.
- Configured Tailwind CSS for styling and Vite for development and build processes.
- Added scripts for Dockerfile validation, Python syntax checking, and Sourcery integration.
- Implemented release and coverage scripts for better CI/CD practices.

tools/python_compile_check.sh

@@ -0,0 +1,12 @@
+#!/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