feat(conga,dev): worker and scheduler reports, summer dev runs serve

- queue:work and schedule:run print a startup summary and a shutdown
  report on a terminal, log them as records otherwise, and return nil
  after a clean stop
- schedule:run --once ends with 'Ran N due entries (M failed)'
- summer dev runs bin/<app> serve with the forwarded global options,
  reports through Output, stops the old server before starting the new
  one and prints a dev report on Ctrl+C (exit 0)
- lagoon.DatabaseLabel describes a DSN without its secrets
- Long help and examples for queue:work, schedule:run, dev, docs:serve

modules/lagoon/connection.go

@@ -4,12 +4,14 @@ import (
 	"context"
 	"database/sql"
 	"fmt"
+	"strconv"
 	"strings"
 	"time"
 
 	"git.golem15.com/golem15/summercms/modules/backpack"
 	"git.golem15.com/golem15/summercms/modules/compass"
 	"git.golem15.com/golem15/summercms/modules/diary"
+	"github.com/jackc/pgx/v5/pgconn"
 	_ "github.com/jackc/pgx/v5/stdlib"
 	"gorm.io/driver/postgres"
 	"gorm.io/gorm"
@@ -122,6 +124,33 @@ func DSN(cfg *compass.Config) string {
 	return strings.TrimSpace(cfg.String("database.dsn"))
 }
 
+// DatabaseLabel describes dsn for a person without its secrets: host:port/name
+// parsed with pgconn.ParseConfig (a Unix socket directory reads "socket
+// <dir>"), never the user or password. An empty DSN is "not configured", one
+// that does not parse "configured". serve and queue:work print it in their
+// startup summaries.
+func DatabaseLabel(dsn string) string {
+	dsn = strings.TrimSpace(dsn)
+	if dsn == "" {
+		return "not configured"
+	}
+	cfg, err := pgconn.ParseConfig(dsn)
+	if err != nil || cfg.Host == "" {
+		return "configured"
+	}
+	host := cfg.Host
+	if strings.HasPrefix(host, "/") {
+		host = "socket " + host
+	} else if strings.Contains(host, ":") {
+		host = "[" + host + "]"
+	}
+	label := host + ":" + strconv.Itoa(int(cfg.Port))
+	if cfg.Database != "" {
+		label += "/" + cfg.Database
+	}
+	return label
+}
+
 // Publish stores the shared SQL pool and GORM handle on the app. Both
 // handles refer to the same *sql.DB. It then runs the callbacks queued by
 // OnDatabase and returns the first error.