connectors: quieter chips, 3-line descriptions, single access-grant surface

Row descriptions clamp at three lines instead of one. Metadata chips
(scope/type/auth) lose the loud accents — only status chips keep colour —
and the auth chip speaks human ("Requires an API key") instead of the
raw enum, via a shared authLabel().

Drop the access-grant section from the connector detail page: the Users
page modal already grants both global and per-user connectors, so
"who has what" now has a single surface.

web/components/shared/connector-common.js

@@ -34,6 +34,17 @@ export function statusText(status) {
   }[status] ?? status;
 }
 
+/// The auth requirement as a human phrase ("Requires an API key"), never the raw
+/// enum — `api_key` on a chip told the reader nothing.
+export function authLabel(kind) {
+  return {
+    api_key: t('connectors.chip.auth.api_key'),
+    oauth:   t('connectors.chip.auth.oauth'),
+    qr:      t('connectors.chip.auth.qr'),
+    ssh_key: t('connectors.chip.auth.ssh_key'),
+  }[kind] ?? kind;
+}
+
 /// The one place that decides what a connector's state *is*, from whichever runtime
 /// rows exist for it.
 ///