[fernandoescolar]

This PR delivers a broad Compose UX and architecture upgrade in cockpit-docker, moving from a dense, hard-to-scan interface to a clearer, progressive workflow while also improving reliability, security handling, and maintainability.

Main Improvements

• Container name normalization was moved to the API layer so names starting with "/" are cleaned once at source and remain consistent across the UI.
• A full Compose management flow was added, including stack discovery, lifecycle actions, service operations, file editing, diff, and history.
• Sensitive runtime environment variables for Compose actions are now handled through encrypted storage on disk (per stack),
• The previous monolithic Compose page was refactored into smaller components plus a dedicated state/actions hook for easier maintenance and future extension.
• Compose-related modules were reorganized under a compose-focused structure for cleaner ownership and clearer boundaries.

[chabad360]

Hey, thanks for this. I'll be upfront, I'm not going to merge this for two reasons:

1. This is very explicitly meant to be a fork of cockpit-podman that was basically Ctrl-R cockpit with docker, so this would be a very large departure from that.
2. I'm not maintaining this anymore, so I can't -in good conscience- merge this (tbh, I should mark this archived).