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.

LICENSE

@@ -0,0 +1,37 @@
+Jarvis AI Assistant License
+
+Copyright (c) 2025 Baris Sencan
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to use,
+copy, modify, merge, publish, and distribute the Software for non-commercial
+purposes, subject to the following conditions:
+
+NON-COMMERCIAL USE:
+You may use, copy, modify, merge, publish, and distribute the Software for
+personal, educational, research, or other non-commercial purposes without
+charge, provided that:
+
+1. The above copyright notice and this permission notice appear in all copies.
+2. You do not sell, rent, lease, or otherwise commercialise the Software.
+3. Any derivative works are also licensed under these same terms.
+
+COMMERCIAL USE:
+Commercial use of the Software requires a separate commercial license from
+the copyright holder. Commercial use includes, but is not limited to:
+
+- Using the Software in a commercial product or service
+- Using the Software to provide paid services
+- Distributing the Software as part of a commercial offering
+- Using the Software in any revenue-generating activity
+
+To obtain a commercial license, please contact: [baris@writeme.com]
+
+DISCLAIMER:
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.