fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip]

6d224861 came from a --no-checkout worktree whose empty index made the
commit drop every file except two. This restores 05b50d2b's full tree and
correctly adds stacks/stem95su/gdrive-sync.tf + the service-catalog stem95su
entry. Forward-only (parent=6d224861, no force-push); [ci skip] since the
live infra was never applied from the broken commit.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

scripts/fan-control.service

@@ -0,0 +1,21 @@
+[Unit]
+Description=Presence-aware IPMI fan controller (Dell R730, garage)
+Documentation=https://github.com/ViktorBarzin/infra/blob/master/scripts/fan-control.sh
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+EnvironmentFile=-/etc/fan-control.env
+ExecStart=/usr/local/bin/fan-control
+# Belt-and-suspenders: whatever happens to the daemon, hand the fans back to
+# the iDRAC's own automatic curve so the box is never stuck in manual mode.
+ExecStopPost=/usr/bin/ipmitool raw 0x30 0x30 0x01 0x01
+Restart=on-failure
+RestartSec=10
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=fan-control
+
+[Install]
+WantedBy=multi-user.target