Add Panama system health diagnostics

tests/quickshell/fixtures/doctor/bin/systemd-inhibit

@@ -0,0 +1,10 @@
+#!/usr/bin/bash
+
+set -euo pipefail
+
+uid="$(/usr/bin/id -u)"
+printf 'Panama %s fixture-user 4101 systemd-inhibit sleep:idle Caffeine block\n' "$uid"
+if [[ "${PANAMA_DOCTOR_FIXTURE_CAFFEINE:-single}" == "duplicate" ]]; then
+    printf 'Panama %s fixture-user 4102 systemd-inhibit sleep:idle Caffeine block\n' "$uid"
+fi
+printf 'Other %s fixture-secret-token AA:BB:CC:DD:EE:FF fixture clipboard body ignore ignore\n' "$uid"