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.

tests/test_config_mcps.py

@@ -0,0 +1,36 @@
+import pytest
+from jarvis.config import get_default_config, load_settings
+
+
+@pytest.mark.unit
+def test_default_config_has_empty_mcps():
+    cfg = get_default_config()
+    assert isinstance(cfg.get("mcps"), dict)
+    assert cfg["mcps"] == {}
+
+
+@pytest.mark.unit
+def test_load_settings_normalizes_mcps(monkeypatch, tmp_path):
+    # Write a minimal config that overrides mcps with a list of dicts using name field
+    cfg_path = tmp_path / "config.json"
+    cfg_path.write_text(
+        """
+        {
+          "mcps": [
+            {"name": "fs", "transport": "stdio", "command": "npx", "args": ["-y", "@modelcontextprotocol/server-filesystem", "~"], "env": {}}
+          ],
+          "ollama_base_url": "http://localhost",
+          "ollama_embed_model": "x",
+          "ollama_chat_model": "y"
+        }
+        """,
+        encoding="utf-8",
+    )
+
+    # Point loader to our temporary config
+    monkeypatch.setenv("JARVIS_CONFIG_PATH", str(cfg_path))
+    s = load_settings()
+    assert isinstance(s.mcps, dict)
+    assert "fs" in s.mcps
+    assert s.mcps["fs"]["transport"] == "stdio"
+