A warmer, friendlier admin: first pass

- The INBUXA palette on warm surfaces, softer cards, buttons and inputs, and
  self-hosted Inter and Space Grotesk.
- Each section's icon sits on a colored tile, colored by what the section is
  about.
- The sidebar gets a guide line for sub-pages and a labeled Management /
  Settings / Account switch, and folds to a rail of tiles (remembered).
- Every page has a header with its section's tile.
- Fields and pages with no label of their own are spelled out in words
  (defaultCertificateId becomes Default certificate ID).
- The dashboard greets you, and its stat cards wear colored tiles.
- Unavailable live numbers are a calm note, not an error.
- The cat appears in empty lists and while loading.
- Chart colors work again: they were hex values wrapped in hsl().

src/i18n/en.json

@@ -61,7 +61,8 @@
     "preset7d": "Last 7 days",
     "preset90d": "Last 90 days",
     "title": "Dashboard",
-    "to": "To"
+    "to": "To",
+    "liveUnavailable": "Live numbers aren't available on this server yet. The rest of the dashboard still works."
   },
   "deliveryTrace": {
     "attemptCount_one": "{{count}} attempt",
@@ -282,7 +283,8 @@
     "showing": "Showing {{from}}-{{to}} of {{total}} {{name}}",
     "showingItems": "Showing {{count}} items",
     "sort": "Sort",
-    "unknownError": "Unknown error"
+    "unknownError": "Unknown error",
+    "emptyTitle": "Nothing here yet"
   },
   "login": {
     "continue": "Continue",
@@ -382,5 +384,11 @@
   "source": {
     "download": "Source code of this version ({{id}}), AGPL-3.0",
     "menu": "Source code (AGPL-3.0)"
+  },
+  "greeting": {
+    "morning": "Good morning",
+    "afternoon": "Good afternoon",
+    "evening": "Good evening",
+    "subtitle": "Here's how your mail server is doing."
   }
 }