v0.3.0-5: fix UID/GID to 125, wait for user manager and podman socket

- Fix gitea-runner UID/GID to 125 for stable user@125.service unit name
- Use BindsTo= for gitea-runner-podman.service dependency
- Wait for user@125.service and Podman socket before runner starts
- Add ExecStartPre socket wait loop (60s timeout)
- Ship commented-out limits.conf drop-in for resource caps

gitea-act_runner@.service

@@ -1,7 +1,8 @@
 [Unit]
 Description=Act runner is a runner for Gitea
-After=network.target gitea-runner-podman.service
-Requires=gitea-runner-podman.service
+After=network.target gitea-runner-podman.service user@125.service
+Wants=user@125.service
+BindsTo=gitea-runner-podman.service
 ConditionPathExists=/var/lib/gitea/runners/%i/.runner
 StartLimitIntervalSec=60
 StartLimitBurst=3
@@ -15,6 +16,8 @@ StateDirectoryMode=0750
 WorkingDirectory=/var/lib/gitea/runners/%i
 Environment=HOME=/var/lib/gitea/runners/%i
 
+# Wait for podman to actually create its socket before starting
+ExecStartPre=/bin/sh -c 'for i in $(seq 1 60); do [ -S /run/gitea-runner/podman/podman.sock ] && exit 0; sleep 1; done; echo "podman socket never appeared" >&2; exit 1'
 ExecStart=/usr/bin/gitea-act-runner daemon -c /etc/gitea/runners/%i.yaml
 
 Restart=on-failure