Add docker agent builds to Makefile build-agents target

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

Author: rcourtman

Makefile

@@ -69,15 +69,21 @@ format-backend:
 format-frontend:
 	npm --prefix $(FRONTEND_DIR) run format
 
-# Build all host agent binaries for all platforms
+# Build all agent binaries for all platforms
 build-agents:
-	@echo "Building host agent binaries for all platforms..."
+	@echo "Building agent binaries for all platforms..."
 	@mkdir -p bin
-	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -trimpath -o bin/pulse-host-agent-linux-amd64 ./cmd/pulse-host-agent
-	CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build -ldflags="-s -w" -trimpath -o bin/pulse-host-agent-linux-arm64 ./cmd/pulse-host-agent
-	CGO_ENABLED=0 GOOS=linux GOARCH=arm GOARM=7 go build -ldflags="-s -w" -trimpath -o bin/pulse-host-agent-linux-armv7 ./cmd/pulse-host-agent
-	CGO_ENABLED=0 GOOS=darwin GOARCH=amd64 go build -ldflags="-s -w" -trimpath -o bin/pulse-host-agent-darwin-amd64 ./cmd/pulse-host-agent
-	CGO_ENABLED=0 GOOS=darwin GOARCH=arm64 go build -ldflags="-s -w" -trimpath -o bin/pulse-host-agent-darwin-arm64 ./cmd/pulse-host-agent
+	@VERSION=$$(cat VERSION | tr -d '\n') && \
+	echo "Building docker agent binaries (version: v$$VERSION)..." && \
+	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="-s -w -X github.com/rcourtman/pulse-go-rewrite/internal/dockeragent.Version=v$$VERSION" -trimpath -o bin/pulse-docker-agent-linux-amd64 ./cmd/pulse-docker-agent && \
+	CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build -ldflags="-s -w -X github.com/rcourtman/pulse-go-rewrite/internal/dockeragent.Version=v$$VERSION" -trimpath -o bin/pulse-docker-agent-linux-arm64 ./cmd/pulse-docker-agent && \
+	CGO_ENABLED=0 GOOS=linux GOARCH=arm GOARM=7 go build -ldflags="-s -w -X github.com/rcourtman/pulse-go-rewrite/internal/dockeragent.Version=v$$VERSION" -trimpath -o bin/pulse-docker-agent-linux-armv7 ./cmd/pulse-docker-agent && \
+	echo "Building host agent binaries..." && \
+	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -trimpath -o bin/pulse-host-agent-linux-amd64 ./cmd/pulse-host-agent && \
+	CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build -ldflags="-s -w" -trimpath -o bin/pulse-host-agent-linux-arm64 ./cmd/pulse-host-agent && \
+	CGO_ENABLED=0 GOOS=linux GOARCH=arm GOARM=7 go build -ldflags="-s -w" -trimpath -o bin/pulse-host-agent-linux-armv7 ./cmd/pulse-host-agent && \
+	CGO_ENABLED=0 GOOS=darwin GOARCH=amd64 go build -ldflags="-s -w" -trimpath -o bin/pulse-host-agent-darwin-amd64 ./cmd/pulse-host-agent && \
+	CGO_ENABLED=0 GOOS=darwin GOARCH=arm64 go build -ldflags="-s -w" -trimpath -o bin/pulse-host-agent-darwin-arm64 ./cmd/pulse-host-agent && \
 	CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build -ldflags="-s -w" -trimpath -o bin/pulse-host-agent-windows-amd64.exe ./cmd/pulse-host-agent
 	@ln -sf pulse-host-agent-windows-amd64.exe bin/pulse-host-agent-windows-amd64
-	@echo "✓ All host agent binaries built in bin/"
+	@echo "✓ All agent binaries built in bin/"