[bojemoi_boot] refactor(boot): cleanup networks, push-images, remove toolbox service

Commit `1e8935e`

stack: remove redundant name: fields on external networks, fix telegram_net (was creating with wrong name telegram_telegram_net), remove borodino_scan_net (managed by borodino stack)
stack: remove toolbox service (moved to 99-service-tool.yml)
push-images: refactor phases 1/2/3, add cccp.sh integration for custom builds, improve source mappings (alloy, tempo, ollama, mosquitto, nuclei-api, wg-gateway, etc.), skip already-in-registry images, normalize IMAGE_REGISTRY template variable

Co-Authored-By: Claude Sonnet 4.6 noreply@anthropic.com