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

docs/console/scaffolding.md

@@ -13,13 +13,15 @@ The `summer` tool creates and builds applications and generates the files a plug
 | Command | Purpose |
 |---------|---------|
 | `summer build` | Reads `summer.yaml`, generates `plugins.gen.go` and `main.go`, and builds the binary into `bin/`, passing the manifest's `build.tags` to `go build` as `-tags`. Run it from the application directory or any directory below it. |
-| `summer dev` | Builds the application as `summer build` does (build tags included), starts the binary, and rebuilds and restarts it whenever a Go or YAML source, `go.mod`, `go.work`, `.env` or `summer.yaml` changes. |
+| `summer dev` | Builds the application as `summer build` does (build tags included), runs `bin/<binary> serve`, and rebuilds and restarts it whenever a Go or YAML source, `go.mod`, `go.work`, `.env` or `summer.yaml` changes. A failed build keeps the running server. |
 
 ```sh
 summer build
 summer dev
 ```
 
+`summer dev` passes its global options on to `serve`: `summer dev -v` shows the per-plugin lines of the startup summary and every component's info logs, `summer dev -q` only warnings and errors. Ctrl+C stops `serve`, which prints its shutdown report, then `summer dev` prints its own report (rebuilds, failed builds, restarts, uptime) and exits 0.
+
 Do not edit `main.go` or `plugins.gen.go`: `summer build` rewrites them from the manifest.
 
 ## Creating an application