Prefix PathoCore API host settings

[Daniel-VM]

Summary

Aligns PathoCore API host configuration names with the orchestrator naming scheme and documents the most relevant deployment variables.

Variable changes

Renamed:

• LOCAL_SERVER_IP -> PATHOCORE_API_LOCAL_SERVER_IP
• DNS_URL -> PATHOCORE_API_DNS_URL

Updated files:

• install.sh
• conf/template_install_settings.txt
• conf/docker_test_settings.txt
• conf/docker_production_settings.txt

Compatibility note:

• The old variable names are intentionally not preserved. Existing install settings must be updated before running the installer.

Documentation

Adds an Important Environment Variables README section covering:

• database settings
• public API host settings
• Keycloak settings
• access request email settings
• local admin and public endpoint settings

The examples use generic <domain> placeholders instead of concrete deployment domains.

Validation

• bash -n install.sh container_install.sh scripts/*.sh
• python -m py_compile conf/template_settings.py core/api/services/access_requests.py core/tests.py
• git diff --check