panel public release

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

pkg/version/version.go

@@ -0,0 +1,20 @@
+// Package version holds the single build-time version string shared by
+// every panel binary (controller, agent, panelctl).
+//
+// It defaults to "dev" and is injected at build time via:
+//
+//	go build -ldflags "-X github.com/dbledeez/panel/pkg/version.Version=v1.2.3"
+//
+// The Makefile at the repo root and the install scripts (install.sh /
+// install.ps1) wire this automatically from `git describe` or $PANEL_VERSION.
+package version
+
+// Version is the panel build version. Overridden by -ldflags -X; "dev"
+// in ad-hoc `go build` / `go run` builds.
+var Version = "dev"
+
+// UserAgent returns the canonical User-Agent header value for outbound
+// HTTP requests made by panel binaries.
+func UserAgent() string {
+	return "panel/" + Version + " (+https://github.com/dbledeez/panel)"
+}