Depend on dreamdict as a published module, not a local path

The dev `replace ../dreamdict` was only ever a bridge for building against
uncommitted upstream work. It cannot survive the Docker build, whose context is
this repo alone, so it comes out now that the two dreamdict commits are pushed.

Claude-Session: https://claude.ai/code/session_016y6gyuHkQXPiEuW8RGQyua

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/coreos/go-oidc/v3 v3.20.0
 	github.com/go-chi/chi/v5 v5.3.0
 	github.com/go-jose/go-jose/v4 v4.1.4
-	github.com/prosolis/dreamdict v0.0.0-00010101000000-000000000000
+	github.com/prosolis/dreamdict v0.0.0-20260727163219-302a39d5c768
 	golang.org/x/oauth2 v0.36.0
 	modernc.org/sqlite v1.53.0
 )
@@ -22,5 +22,3 @@ require (
 	modernc.org/mathutil v1.7.1 // indirect
 	modernc.org/memory v1.11.0 // indirect
 )
-
-replace github.com/prosolis/dreamdict => ../dreamdict