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_splash_screen.py

@@ -0,0 +1,78 @@
+"""
+Tests for splash_screen.py functionality.
+
+Tests the splash screen component used during application startup.
+Note: These tests use headless mode where possible.
+"""
+
+import pytest
+from unittest.mock import patch, MagicMock
+import sys
+
+
+class TestSplashScreenImport:
+    """Tests for splash screen module import."""
+
+    def test_can_import_module(self):
+        """splash_screen module should be importable."""
+        from desktop_app import splash_screen
+        assert splash_screen is not None
+
+    def test_splash_screen_class_exists(self):
+        """SplashScreen class should be defined."""
+        from desktop_app.splash_screen import SplashScreen
+        assert SplashScreen is not None
+
+    def test_animated_orb_class_exists(self):
+        """AnimatedOrb class should be defined."""
+        from desktop_app.splash_screen import AnimatedOrb
+        assert AnimatedOrb is not None
+
+
+class TestSplashScreenFunctionality:
+    """Tests for splash screen functionality."""
+
+    def test_splash_screen_instantiation(self, qapp):
+        """SplashScreen should instantiate without error."""
+        from desktop_app.splash_screen import SplashScreen
+        splash = SplashScreen()
+        assert splash is not None
+        splash.close()
+
+    def test_splash_screen_set_status(self, qapp):
+        """SplashScreen should allow setting status text."""
+        from desktop_app.splash_screen import SplashScreen
+        splash = SplashScreen()
+        splash.set_status("Test status message")
+        assert splash._status_label.text() == "Test status message"
+        splash.close()
+
+    def test_splash_screen_close_splash(self, qapp):
+        """SplashScreen close_splash should stop animation and close."""
+        from desktop_app.splash_screen import SplashScreen
+        splash = SplashScreen()
+        splash.show()
+        splash.close_splash()
+        # Orb animation should be stopped
+        assert not splash._orb._timer.isActive()
+
+    def test_animated_orb_instantiation(self, qapp):
+        """AnimatedOrb should instantiate and start animation."""
+        from desktop_app.splash_screen import AnimatedOrb
+        orb = AnimatedOrb()
+        assert orb is not None
+        assert orb._timer.isActive()
+        orb.stop()
+        assert not orb._timer.isActive()
+
+
+class TestSplashScreenColors:
+    """Tests for splash screen theme colors."""
+
+    def test_uses_theme_colors(self):
+        """SplashScreen should use colors from themes module."""
+        from desktop_app.splash_screen import COLORS
+        from desktop_app.themes import COLORS as THEME_COLORS
+
+        # Should be using the same color constants
+        assert COLORS == THEME_COLORS