Add Discord-native hybrid front-end for Jarvis (bot + bridge)

Transform isair/jarvis into a Discord-controlled voice assistant running on
the Ubuntu VNC desktop, keeping the mature ~39k-line Python brain intact.

- bot/ (Node + bun, discord.js): /자비스 slash commands (ephemeral),
  voice channel join + voice receive/playback, pluggable VNC screen broadcast
  (selfbot live / noVNC / screenshot)
- bridge/ (Python, Flask): wraps jarvis STT + run_reply_engine + Piper TTS
  behind a thin localhost HTTP API
- .env.example, scripts/ (start_bridge/start_bot/dev), README rewrite,
  docs/language-comparison.md and docs/vnc-xfce-setup.md

Language decision: hybrid (Python brain + Node/bun Discord layer) because
Discord blocks bot video; native screen broadcast only works via a Node
selfbot library.

.claude/launch.json

@@ -0,0 +1,29 @@
+{
+  "version": "0.0.1",
+  "configurations": [
+    {
+      "name": "Desktop App",
+      "runtimeExecutable": "python",
+      "runtimeArgs": ["scripts/launch.py", "run_desktop_app"],
+      "port": 5050
+    },
+    {
+      "name": "Desktop App (Voice Debug)",
+      "runtimeExecutable": "python",
+      "runtimeArgs": ["scripts/launch.py", "run_desktop_app", "--voice-debug"],
+      "port": 5050
+    },
+    {
+      "name": "Evals",
+      "runtimeExecutable": "python",
+      "runtimeArgs": ["scripts/launch.py", "run_evals"],
+      "port": null
+    },
+    {
+      "name": "Build Installer",
+      "runtimeExecutable": "python",
+      "runtimeArgs": ["scripts/launch.py", "build_installer"],
+      "port": null
+    }
+  ]
+}