P1-R3: Initial project infrastructure

- Project directory structure: docs/, src/, build/, recipes/, scripts/, wiki/
- README.md with project overview and status
- .editorconfig for consistent code style
- .gitignore for Python, C/C++, kernel, and build artifacts
- docs/research/: system research report + base OS decision
- docs/audio-stack-config.md: audio stack configuration notes
- config/: JACK, ALSA, CPU performance configs
- Preserved research from P1-R1 and P1-R2 tasks

config/cpu-performance.service

@@ -0,0 +1,11 @@
+[Unit]
+Description=Set CPU governor to performance
+After=multi-user.target
+
+[Service]
+Type=oneshot
+ExecStart=/bin/sh -c 'echo performance | tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor'
+RemainAfterExit=yes
+
+[Install]
+WantedBy=multi-user.target