Move SealShare onto Livewire Material

Replaces maryUI and daisyUI with nonameweb/livewire-material: the Vibrant
indigo scheme, a system/light/dark theme under sealshare-theme, one top
app bar with the account menu, the upload drop zone and link-ready
moments, M3 fields, dialogs instead of wire:confirm, snackbars instead of
flashed messages, a sortable admin table, and the starter-kit cleanup.
Docker builds assets after Composer; CI drops the Flux step.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01V9NnLxnPp8vaaurb3Z1MFy

composer.json

@@ -15,7 +15,7 @@
         "laravel/octane": "^2.13",
         "laravel/tinker": "^3.0",
         "livewire/livewire": "^4.0",
-        "robsontenorio/mary": "^2.7"
+        "nonameweb/livewire-material": "^1.0"
     },
     "require-dev": {
         "fakerphp/faker": "^1.23",
@@ -26,6 +26,7 @@
         "mockery/mockery": "^1.6",
         "nunomaduro/collision": "^8.6",
         "pestphp/pest": "^5.1",
+        "pestphp/pest-plugin-browser": "^5.0",
         "pestphp/pest-plugin-laravel": "^5.0"
     },
     "autoload": {
@@ -99,5 +100,11 @@
         }
     },
     "minimum-stability": "stable",
-    "prefer-stable": true
+    "prefer-stable": true,
+    "repositories": {
+        "livewire-material": {
+            "type": "vcs",
+            "url": "https://gitea.nonameweb.ch/noNameWEB/livewire-material.git"
+        }
+    }
 }