issue 1860: prove the operator's list end to end (integration, compiled only)

Both bundles start whole: mesh-mail-reader against a fresh database on the real store and an added event
on a real bus, mesh-mail-web's mail-reading asks carried to the reader's own tools/call as mesh-mail-web,
with stand-ins for mail-store and a fixed judgement. A task due today shows under today, ticked through
the page it is under handled today with one handled line holding no mail text, undo returns it, and a
correction from the reading pane keeps a lesson and one corrected line, within two minutes. pgx joins
mesh-mail-web's go.mod for the test's fresh database; the lead's try runs it.

modules/mesh-mail-web/go.mod

@@ -5,6 +5,7 @@ go 1.26.0
 require (
 	git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261019062050-34392e74916c
 	github.com/coreos/go-oidc/v3 v3.21.0
+	github.com/jackc/pgx/v5 v5.11.0
 	github.com/nats-io/nats-server/v2 v2.11.17
 	github.com/nats-io/nats.go v1.54.0
 	golang.org/x/oauth2 v0.37.0
@@ -14,12 +15,17 @@ require (
 	github.com/antithesishq/antithesis-sdk-go v0.7.0-default-no-op // indirect
 	github.com/go-jose/go-jose/v4 v4.1.4 // indirect
 	github.com/google/go-tpm v0.9.8 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
+	github.com/jackc/puddle/v2 v2.2.2 // indirect
 	github.com/klauspost/compress v1.20.0 // indirect
 	github.com/minio/highwayhash v1.0.4 // indirect
 	github.com/nats-io/jwt/v2 v2.8.1 // indirect
 	github.com/nats-io/nkeys v0.4.16 // indirect
 	github.com/nats-io/nuid v1.0.1 // indirect
 	golang.org/x/crypto v0.57.0 // indirect
+	golang.org/x/sync v0.23.0 // indirect
 	golang.org/x/sys v0.48.0 // indirect
+	golang.org/x/text v0.42.0 // indirect
 	golang.org/x/time v0.15.0 // indirect
 )