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/blocks.json

@@ -0,0 +1,248 @@
+{
+  "name": "blocks",
+  "title": {
+    "uk": "Логотип Das OS і відомості про систему",
+    "en": "Das OS logo and system facts"
+  },
+  "local": false,
+  "vars": {
+    "url": ""
+  },
+  "fields": [
+    {
+      "x": 26,
+      "y": 0,
+      "width": 50,
+      "align": "left",
+      "text": "{user}@{hostname}",
+      "style": "j"
+    },
+    {
+      "x": 26,
+      "y": 1,
+      "width": 50,
+      "align": "left",
+      "text": "──────────────────────────────",
+      "style": "i"
+    },
+    {
+      "x": 26,
+      "y": 2,
+      "width": 9,
+      "align": "left",
+      "text": "[[ОС|OS]]",
+      "style": "k"
+    },
+    {
+      "x": 35,
+      "y": 2,
+      "width": 41,
+      "align": "left",
+      "text": "{os}",
+      "style": "l"
+    },
+    {
+      "x": 26,
+      "y": 3,
+      "width": 9,
+      "align": "left",
+      "text": "[[Ядро|Kernel]]",
+      "style": "k"
+    },
+    {
+      "x": 35,
+      "y": 3,
+      "width": 41,
+      "align": "left",
+      "text": "{kernel}",
+      "style": "l"
+    },
+    {
+      "x": 26,
+      "y": 4,
+      "width": 9,
+      "align": "left",
+      "text": "[[Працює|Uptime]]",
+      "style": "k"
+    },
+    {
+      "x": 35,
+      "y": 4,
+      "width": 41,
+      "align": "left",
+      "text": "{uptime}",
+      "style": "l"
+    },
+    {
+      "x": 26,
+      "y": 5,
+      "width": 9,
+      "align": "left",
+      "text": "CPU",
+      "style": "k"
+    },
+    {
+      "x": 35,
+      "y": 5,
+      "width": 41,
+      "align": "left",
+      "text": "{cpu}",
+      "style": "l"
+    },
+    {
+      "x": 26,
+      "y": 6,
+      "width": 9,
+      "align": "left",
+      "text": "[[Пам'ять|Memory]]",
+      "style": "k"
+    },
+    {
+      "x": 35,
+      "y": 6,
+      "width": 41,
+      "align": "left",
+      "text": "{mem}",
+      "style": "l"
+    },
+    {
+      "x": 26,
+      "y": 7,
+      "width": 9,
+      "align": "left",
+      "text": "IP",
+      "style": "k"
+    },
+    {
+      "x": 35,
+      "y": 7,
+      "width": 41,
+      "align": "left",
+      "text": "{ips}",
+      "style": "l"
+    },
+    {
+      "x": 26,
+      "y": 8,
+      "width": 9,
+      "align": "left",
+      "text": "[[Вхід|Users]]",
+      "style": "k"
+    },
+    {
+      "x": 35,
+      "y": 8,
+      "width": 41,
+      "align": "left",
+      "text": "{users}",
+      "style": "l"
+    },
+    {
+      "x": 26,
+      "y": 10,
+      "width": 50,
+      "align": "left",
+      "text": "{url}",
+      "style": "g"
+    }
+  ],
+  "widgets_position": "below",
+  "widgets": [
+    {
+      "type": "builtin",
+      "name": "disks"
+    }
+  ],
+  "styles": {
+    "a": {
+      "fg": "bright_yellow",
+      "bg": null,
+      "bold": false
+    },
+    "b": {
+      "fg": "blue",
+      "bg": "bright_yellow",
+      "bold": false
+    },
+    "c": {
+      "fg": "bright_blue",
+      "bg": "bright_yellow",
+      "bold": false
+    },
+    "d": {
+      "fg": "bright_blue",
+      "bg": "yellow",
+      "bold": false
+    },
+    "e": {
+      "fg": "bright_yellow",
+      "bg": "bright_blue",
+      "bold": false
+    },
+    "f": {
+      "fg": "yellow",
+      "bg": "bright_blue",
+      "bold": false
+    },
+    "g": {
+      "fg": "yellow",
+      "bg": null,
+      "bold": false
+    },
+    "h": {
+      "fg": "bright_yellow",
+      "bg": "blue",
+      "bold": false
+    },
+    "i": {
+      "fg": "bright_blue",
+      "bg": null,
+      "bold": false
+    },
+    "j": {
+      "fg": "bright_cyan",
+      "bg": null,
+      "bold": true
+    },
+    "k": {
+      "fg": "bright_blue",
+      "bg": null,
+      "bold": true
+    },
+    "l": {
+      "fg": "white",
+      "bg": null,
+      "bold": false
+    }
+  },
+  "lines": [
+    "",
+    "           ██",
+    "     ▄▄   ▄▀▀▄   ▄▄",
+    "     ▀█▀▀██████▀▀█▀",
+    "      █▀▀██████▀▀█",
+    "  ▄▄▄▀▀▀▀▀▀▀▀▀▀▀▀▀▀▄▄▄",
+    "  ▀▀█▀▀▀▀▀▀▀▀▀▀▀▀▀▀█▀▀",
+    "      █▀▀██████▀▀█",
+    "     ▄█▀▀██████▀▀█▄",
+    "     ▀▀   ▀▀▀▀   ▀▀",
+    "           ██"
+  ],
+  "style_map": [
+    "",
+    "           ii",
+    "     aa   iddi   aa",
+    "     aahhaiggiahhaa",
+    "      abbaaiiaabba",
+    "  iiidddeeecceeedddiii",
+    "  iiifffccceecccfffiii",
+    "      ahhaaiiaahha",
+    "     aabbaiggiabbaa",
+    "     aa   iffi   aa",
+    "           ii"
+  ],
+  "canvas": {
+    "width": 76,
+    "height": 12
+  }
+}