The build-agents Makefile target was only building host agent binaries,
which meant development builds were missing the architecture-specific
docker agent binaries (pulse-docker-agent-linux-{amd64,arm64,armv7}).
This caused the install script to fail on ARM platforms like Raspberry Pi
because the download endpoint would fall back to the default amd64 binary,
resulting in "Exec format error" when trying to run on ARM.
Related to #633
- Build host agent binaries for all platforms (linux/darwin/windows, amd64/arm64/armv7) in Docker
- Add Makefile target for building agent binaries locally
- Add startup validation to check for missing agent binaries
- Improve download endpoint error messages with troubleshooting guidance
- Enhance host details drawer layout with better organization and visual hierarchy
- Update base images to rolling versions (node:20-alpine, golang:1.24-alpine, alpine:3.20)