enhance: test on Windows and fix what it found (#1348)

Adds a weekly and on-demand workflow that runs the cross-compiled tests on Windows Server 2025 Core in a [dockur/windows](https://github.com/dockur/windows) QEMU VM, and fixes the Windows bugs it found in host and UNC paths, env handling, shell quoting, post-task scripts, health checks, checkout, action symlinks, step summaries, Git client certificates and docker mode from a Windows host.

Host-mode steps now emit UTF-8, `bash` falls back to Git's bash instead of the WSL launcher, the runner can run as a native Windows service, steps can keep background helpers with `RUNNER_TRACKING_ID`, and Windows arm64 binaries are released.

Fixes: https://gitea.com/gitea/runner/issues/1339
Fixes: https://gitea.com/gitea/runner/issues/637
Fixes: https://gitea.com/gitea/runner/issues/1172
Fixes: https://gitea.com/gitea/runner/issues/347
Reviewed-on: https://gitea.com/gitea/runner/pulls/1348
Reviewed-by: bircni <[email protected]>

internal/app/cmd/cmd.go

@@ -46,7 +46,11 @@ func Execute(ctx context.Context) {
 		Use:   "daemon",
 		Short: "Run as a runner daemon",
 		Args:  cobra.MaximumNArgs(0),
-		RunE:  runDaemon(ctx, &daemArgs, &configFile),
+		RunE: func(command *cobra.Command, args []string) error {
+			return runService(ctx, func(ctx context.Context) error {
+				return runDaemon(ctx, &daemArgs, &configFile)(command, args)
+			})
+		},
 	}
 	daemonCmd.Flags().BoolVar(&daemArgs.Once, "once", false, "Run one job then exit")
 	daemonCmd.Flags().StringVar(&daemArgs.Labels, "labels", os.Getenv("GITEA_RUNNER_LABELS"), "Runner labels, comma separated. Overrides the labels of an already registered runner")