swarmctl setup status shows progress at a glance

swarmctl/README.md

@@ -240,14 +240,22 @@ and the verbs. The flow is `src/interactive.rs`; the terminal and side effects a
 
 ```console
 # swarmctl setup status
- 1  secret store initialised: done
- 2  secret store unsealed: not done (the store is sealed)
+🏗️  setup: 1/8 steps done  █░░░░░░░░░
+
+✅   1  secret store initialised
+👉   2  secret store unsealed                    the store is sealed
+      ↳ setup.md § 1: `bao operator unseal`
  ...
+
 next: step 2, setup.md § 1: `bao operator unseal`
 ```
 
-One line per step of [`docs/1-getting-started/setup.md`](../docs/1-getting-started/setup.md),
-`done`, `not done` or `unknown (<why>)`, and a pointer to the first step left.
+A header with the count and a bar, then one line per step of
+[`docs/1-getting-started/setup.md`](../docs/1-getting-started/setup.md): `✅` done,
+`⬜` not done, `❓` unknown with the reason. The first step left is marked `👉` with its hint, and
+the last line is that hint, or `🎉 setup complete`. The count and bar cover the steps the host can
+observe; failed checks show as `❓ N unknown` in the header. On a terminal, `checking <what>…`
+shows on stderr while the checks run, and colour is on unless `NO_COLOR` is set; piped output is plain.
 Read-only, and it needs no token. Where each step is read from:
 
 | steps | read from                                                                                                                                                                                        |