Add Linux App Store Web Portal with Kubernetes deployment

- React-style static web portal with Tailwind CSS
- OS detection (Debian/Ubuntu, Fedora, Arch, Generic)
- Dynamic install commands (apt://, appstream://, flatpak)
- 9 pre-configured applications
- Kubernetes: 2 replicas, LoadBalancer service, Nginx ingress
- GitLab Container Registry (git.giaco.net/capitano/webapplinux)
- Namespace: linuxwebapp
- Added Dockerfile, nginx.conf, deploy.sh, docker-compose.yml
- Updated README.md with deployment instructions

frontend/apps.json

@@ -0,0 +1,112 @@
+{
+  "apps": [
+    {
+      "id": "vlc",
+      "name": "VLC Media Player",
+      "description": "The most complete media player ever created. Play all your favorite media formats.",
+      "icon": "fa-film",
+      "colors": "from-purple-500 to-indigo-600",
+      "packages": {
+        "apt": "vlc",
+        "appstream": "org.videolan.VLC",
+        "flatpak": "https://flathub.org-repo/vlc.flatpakref"
+      }
+    },
+    {
+      "id": "gimp",
+      "name": "GIMP",
+      "description": "GNU Image Manipulation Program - professional-grade photo editing tool.",
+      "icon": "fa-image",
+      "colors": "from-blue-500 to-cyan-600",
+      "packages": {
+        "apt": "gimp",
+        "appstream": "org.gimp.GIMP",
+        "flatpak": "https://flathub.org-repo/gimp.flatpakref"
+      }
+    },
+    {
+      "id": "vscode",
+      "name": "VS Code",
+      "description": "Visual Studio Code - the code editor redefined for modern development.",
+      "icon": "fa-code",
+      "colors": "from-blue-600 to-blue-800",
+      "packages": {
+        "apt": "code",
+        "appstream": "com.visualstudio.code",
+        "flatpak": "https://flathub.org-repo/code.flatpakref"
+      }
+    },
+    {
+      "id": "thunderbird",
+      "name": "Thunderbird",
+      "description": "Email client that puts control back in your hands with powerful features.",
+      "icon": "fa-envelope",
+      "colors": "from-orange-500 to-red-600",
+      "packages": {
+        "apt": "thunderbird",
+        "appstream": "org.mozilla.thunderbird",
+        "flatpak": "https://flathub.org-repo/thunderbird.flatpakref"
+      }
+    },
+    {
+      "id": "libreoffice",
+      "name": "LibreOffice",
+      "description": "The-free-and-open-source productivity suite for documents, spreadsheets, and presentations.",
+      "icon": "fa-file-alt",
+      "colors": "from-teal-500 to-green-600",
+      "packages": {
+        "apt": "libreoffice",
+        "appstream": "org.libreoffice.LibreOffice",
+        "flatpak": "https://flathub.org-repo/libreoffice.flatpakref"
+      }
+    },
+    {
+      "id": "firefox",
+      "name": "Firefox",
+      "description": "The web browser built for privacy, speed, and customization.",
+      "icon": "fa-globe",
+      "colors": "from-orange-600 to-red-700",
+      "packages": {
+        "apt": "firefox",
+        "appstream": "org.mozilla.firefox",
+        "flatpak": "https://flathub.org-repo/firefox.flatpakref"
+      }
+    },
+    {
+      "id": "inkscape",
+      "name": "Inkscape",
+      "description": "Professional vector graphics editor for illustrations, diagrams, and logos.",
+      "icon": "fa-pen-nib",
+      "colors": "from-blue-400 to-indigo-500",
+      "packages": {
+        "apt": "inkscape",
+        "appstream": "org.inkscape.Inkscape",
+        "flatpak": "https://flathub.org-repo/inkscape.flatpakref"
+      }
+    },
+    {
+      "id": "discord",
+      "name": "Discord",
+      "description": "All-in-one voice and text chat for gamers and communities.",
+      "icon": "fa-comments",
+      "colors": "from-indigo-500 to-purple-600",
+      "packages": {
+        "apt": "discord",
+        "appstream": "com.discordapp.Discord",
+        "flatpak": "https://flathub.org-repo/discord.flatpakref"
+      }
+    },
+    {
+      "id": "github-desktop",
+      "name": "GitHub Desktop",
+      "description": "Simple collaboration from your desktop - git made easy.",
+      "icon": "fa-github",
+      "colors": "from-gray-600 to-gray-800",
+      "packages": {
+        "apt": "github-desktop",
+        "appstream": "com.githubDesktop.githubDesktop",
+        "flatpak": "https://flathub.org-repo/github-desktop.flatpakref"
+      }
+    }
+  ]
+}