feat: Enhance speech and AI configuration with advanced environment settings

- Update `.env.example` with comprehensive speech and AI configuration options
- Modify Docker Compose speech configuration for more flexible audio and ASR settings
- Enhance Dockerfile to support Python virtual environment and speech dependencies
- Refactor environment loading to use Bun's file system utilities
- Improve device listing tool with more detailed device statistics
- Add support for multiple AI models and dynamic configuration

docker/speech/asound.conf

@@ -0,0 +1,35 @@
+pcm.!default {
+    type pulse
+    fallback "sysdefault"
+    hint {
+        show on
+        description "Default ALSA Output (currently PulseAudio Sound Server)"
+    }
+}
+
+ctl.!default {
+    type pulse
+    fallback "sysdefault"
+}
+
+# Use PulseAudio by default
+pcm.pulse {
+    type pulse
+}
+
+ctl.pulse {
+    type pulse
+}
+
+# Explicit device for recording
+pcm.microphone {
+    type hw
+    card 0
+    device 0
+}
+
+# Default capture device
+pcm.!default {
+    type pulse
+    hint.description "Default Audio Device"
+}