refactor: not forcing network volumes, increased default sizes (volumes and containers), locking endpoints to EU-RO-1

[deanq]

Changes

Core Features

• Datacenter locking: All ServerlessResource instances default to DataCenter.EU_RO_1
• Automatic location mapping: datacenter field automatically syncs to locations field for API compatibility
• Datacenter validation: Prevents mismatched datacenters between endpoints and network volumes
• User override capability: Users can specify different datacenters via datacenter or locations parameters

NetworkVolume Simplification

• Required naming: name field is now required instead of auto-generated
• Simplified logic: Removed complexity around tracking name origins and auto-generation
• Larger default size: Increased from 50GB to 100GB for better usability

Volume Management Changes

• Removed auto-creation: Endpoints no longer automatically create default network volumes
• Explicit volume handling: Users must explicitly provide volumes when needed
• Validation: Ensures volume and endpoint datacenters match when volumes are specified

API Improvements

• Public exports: DataCenter enum now available in public API
• Container disk size: Increased default from 10GB to 64GB

Test Plan

• All endpoints default to EU_RO_1 datacenter
• Datacenter validation prevents mismatched configurations
• No automatic volume creation when none specified
• Existing volume deployment still works correctly
• GraphQL API calls succeed without field errors
• User can override datacenter when needed

Breaking Changes

• NetworkVolume.name is now required (was optional with auto-generation)
• Endpoints no longer auto-create network volumes (must be explicitly provided)
• PodTemplate.containerDiskInGb default increased from 10GB to 64GB

Migration Guide

# Before: name was optional
volume = NetworkVolume(size=50)

# After: name is required
volume = NetworkVolume(name="my-volume", size=50)

# Before: endpoints auto-created volumes
endpoint = ServerlessResource(name="my-endpoint")
# Volume was created automatically

# After: volumes must be explicit (if needed)
volume = NetworkVolume(name="my-volume")
endpoint = ServerlessResource(name="my-endpoint", networkVolume=volume)

[pandyamarut]

/LGTM