The .gitignore rule "state/" was unanchored, so git also ignored
apps/agent/internal/state/ — the BoltDB-backed queue persistence
package. CI build failed with:
internal/queue/queue.go:13:2: no required module provides package
github.com/backupy/backupy/apps/agent/internal/state
Anchored the rule to repo root (/state/, /var/) so it only matches
the runtime data directory, never a Go package.
