feat(web): Modul-Identitaet mit App-Kacheln und deutschen Kategorienamen

Jedes Modul bekommt Farbe und Symbol (tender-radar Ocker, dkv-fleet
Petrol, cert-manager Violett, domaincheck Blau, proxmox Rotorange,
unbekannte stabil per Hash). Kategorien in Alltagssprache; dazu die
Texte fuer die neue Anmeldeseite.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

apps/web/src/messages/en.json

@@ -32,7 +32,8 @@
       "networkError": "Connection error. Please try again."
     },
     "branding": {
-      "tagline": "Modular workflow platform for your organization"
+      "tagline": "Modular workflow platform for your organization",
+      "claim": "Your tools in one place."
     },
     "desktopDownload": {
       "windows": "Download desktop app (Windows)",
@@ -68,7 +69,8 @@
       "wrongCurrentPassword": "The current password is incorrect.",
       "networkError": "Connection error. Please try again.",
       "passwordMismatch": "Passwords do not match."
-    }
+    },
+    "loginSubtitle": "Sign in with your user account."
   },
   "header": {
     "search": "Search...",
@@ -1306,5 +1308,12 @@
     "confirm": "Got it",
     "close": "Close window",
     "contentLabel": "Changes"
+  },
+  "moduleCategories": {
+    "domain-tools": "Domains",
+    "security-tools": "Security",
+    "fleet": "Fleet",
+    "infrastructure": "Infrastructure",
+    "procurement": "Procurement"
   }
 }