4c5d430b1a
Add network-level health probing from the controller to deployed apps. The controller probes containers over the shared Docker network and overrides stack state to "unhealthy" if the service isn't responding. Three probe types: http (any response = alive), api (validates status code and body content), tcp (port reachability). Configured per-app via healthcheck: section in .felhom.yml. Runs every minute, per-app interval defaults to 5 minutes. This replaces Docker-level healthchecks for distroless images (e.g. Vikunja) that lack shell utilities, and complements existing Docker healthchecks for other apps. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>