Terminal: Das prompt, dprompt and dbanner (0.9.1)

- das-shell 0.1.0: the Das two-line bash prompt by default (replaces the
  PS1 of Void's skel .bashrc once), dprompt (Textual prompt builder with
  presets and live preview) and dbanner (SSH login banner editor: canvas
  tools, fields with values, widgets, das-banner service for cached ones,
  Das OS logo and tryzub pictures). Python tests in make test.
- das-server 0.3.0 depends on das-shell; the server installer mentions
  dprompt and dbanner; the desktop image includes it.
- run-qemu.sh forwards the guest's SSH to localhost:2222.
- Hardware fixes: Ventoy menu icon, boot menu titles "Das OS <version>".

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

srcpkgs/das-shell/files/share/banner/presets/ukraine.json

@@ -0,0 +1,191 @@
+{
+  "name": "ukraine",
+  "title": {
+    "uk": "Тризуб: малий герб України і дані сервера",
+    "en": "Tryzub: Ukrainian coat of arms and server facts"
+  },
+  "local": false,
+  "vars": {
+    "url": ""
+  },
+  "fields": [
+    {
+      "x": 26,
+      "y": 1,
+      "width": 54,
+      "align": "left",
+      "text": "{hostname}",
+      "style": "e",
+      "font": "small"
+    },
+    {
+      "x": 26,
+      "y": 6,
+      "width": 54,
+      "align": "left",
+      "text": "[[Слава Україні!|Glory to Ukraine!]]",
+      "style": "f"
+    },
+    {
+      "x": 26,
+      "y": 8,
+      "width": 9,
+      "align": "left",
+      "text": "IP",
+      "style": "f"
+    },
+    {
+      "x": 35,
+      "y": 8,
+      "width": 45,
+      "align": "left",
+      "text": "{ip}",
+      "style": "a"
+    },
+    {
+      "x": 26,
+      "y": 9,
+      "width": 9,
+      "align": "left",
+      "text": "[[Сайт|Site]]",
+      "style": "f"
+    },
+    {
+      "x": 35,
+      "y": 9,
+      "width": 45,
+      "align": "left",
+      "text": "{url}",
+      "style": "a"
+    },
+    {
+      "x": 26,
+      "y": 10,
+      "width": 9,
+      "align": "left",
+      "text": "[[Працює|Uptime]]",
+      "style": "f"
+    },
+    {
+      "x": 35,
+      "y": 10,
+      "width": 45,
+      "align": "left",
+      "text": "{uptime}",
+      "style": "a"
+    },
+    {
+      "x": 26,
+      "y": 11,
+      "width": 9,
+      "align": "left",
+      "text": "[[Пам'ять|Memory]]",
+      "style": "f"
+    },
+    {
+      "x": 35,
+      "y": 11,
+      "width": 45,
+      "align": "left",
+      "text": "{mem}",
+      "style": "a"
+    },
+    {
+      "x": 26,
+      "y": 12,
+      "width": 9,
+      "align": "left",
+      "text": "[[ОС|OS]]",
+      "style": "f"
+    },
+    {
+      "x": 35,
+      "y": 12,
+      "width": 45,
+      "align": "left",
+      "text": "{os}",
+      "style": "a"
+    }
+  ],
+  "widgets_position": "below",
+  "widgets": [
+    {
+      "type": "builtin",
+      "name": "disks"
+    },
+    {
+      "type": "builtin",
+      "name": "services"
+    }
+  ],
+  "styles": {
+    "a": {
+      "fg": "bright_yellow",
+      "bg": null,
+      "bold": false
+    },
+    "b": {
+      "fg": "blue",
+      "bg": "bright_yellow",
+      "bold": false
+    },
+    "c": {
+      "fg": "bright_yellow",
+      "bg": "blue",
+      "bold": false
+    },
+    "d": {
+      "fg": "blue",
+      "bg": null,
+      "bold": false
+    },
+    "e": {
+      "fg": "bright_yellow",
+      "bg": null,
+      "bold": true
+    },
+    "f": {
+      "fg": "bright_blue",
+      "bg": null,
+      "bold": true
+    }
+  },
+  "lines": [
+    "██████████████████████",
+    "██████████████████████",
+    "████▀████████████▀████",
+    "████▀█▀████████▀█▀████",
+    "██████████████████████",
+    "███████▀██████▀███████",
+    "██████████████████████",
+    "█████▀█▀█▀██▀█▀█▀█████",
+    "██████▀█▀████▀█▀██████",
+    "██████▀███▀▀███▀██████",
+    "████▀▀▀██▀██▀██▀▀▀████",
+    "███▀▀▀▀▀█▀██▀█▀▀▀▀▀███",
+    " ▀██████▀████▀██████▀",
+    "   ▀▀▀████▀▀████▀▀▀",
+    "        ▀▀██▀▀"
+  ],
+  "style_map": [
+    "dddddddddddddddddddddd",
+    "ddddddddddaadddddddddd",
+    "dddabdddddaadddddbaddd",
+    "dddacabdddaadddbacaddd",
+    "dddaddadddaadddaddaddd",
+    "dddaddabddaaddbaddaddd",
+    "dddaddaaddaaddaaddaddd",
+    "dddadbacdbaabdcabdaddd",
+    "dddaaabdbaddabdbaaaddd",
+    "dddaddcaaabbaaacddaddd",
+    "dddabbbaabaabaabbbaddd",
+    "dddcccccacaacacccccddd",
+    " dddddddcaaaacddddddd",
+    "   dddddddccddddddd",
+    "        dddddd"
+  ],
+  "canvas": {
+    "width": 80,
+    "height": 15
+  }
+}