Fix netboot initialization and add documentation tooling

- Add CLAUDE.md with project architecture and build documentation
- Add verify-image.sh script to validate generated netboot images
- Fix boot.ipxe kernel parameters:
  - Add boot=netboot to invoke custom initramfs script
  - Add console=tty0 for VGA output alongside serial console
  - Fix earlyprintk serial specification
- Remove dead symlink creation in build-image.sh (http/latest pointed to non-existent directory)

The boot=netboot parameter is critical - without it, initramfs falls back to local boot
and fails with /dev/root errors. The console changes enable viewing boot messages on
monitor instead of only serial port.

build-image.sh

@@ -257,7 +257,6 @@ ln -sfn $VERSION $IMAGE_DIR/latest
 # Copy to HTTP directory
 echo "Deploying to HTTP directory..."
 rsync -av $IMAGE_DIR/$VERSION/ $HTTP_DIR/
-ln -sfn $VERSION $HTTP_DIR/latest
 
 # Fix permissions for web server access
 echo "Setting permissions for HTTP serving..."