fix: pin clean-system to OS podman binary

Justfile

@@ -17,6 +17,7 @@ test:
     bats tests/test_ujust.bats
     bats tests/test_ublue_fastfetch.bats
     bats tests/test_motd_integration.bats
+    bats tests/test_clean_system_podman_path.bats
     bats tests/test_ublue_image_info.bats
     bats tests/test_profile_d.bats
     bats tests/test_dynamic_wallpaper.bats

system_files/shared/usr/share/ublue-os/just/default.just

@@ -30,12 +30,12 @@ clean-system:
     #!/usr/bin/bash
     if gum confirm "Prune all Podman images and volumes?"; then
         echo "Images that would be pruned:"
-        podman image ls --filter dangling=true --format "{{{{.Repository}}}}:{{{{.Tag}}}}  {{{{.ID}}}}" 2>/dev/null | head -20
+        /usr/bin/podman image ls --filter dangling=true --format "{{{{.Repository}}}}:{{{{.Tag}}}}  {{{{.ID}}}}" 2>/dev/null | head -20
         echo "Volumes that would be pruned:"
-        podman volume ls --filter dangling=true --quiet 2>/dev/null | head -20
+        /usr/bin/podman volume ls --filter dangling=true --quiet 2>/dev/null | head -20
         if gum confirm "Proceed with pruning Podman images and volumes?"; then
-            podman image prune -af
-            podman volume prune -f
+            /usr/bin/podman image prune -af
+            /usr/bin/podman volume prune -f
         fi
     fi
 

tests/test_clean_system_podman_path.bats

@@ -0,0 +1,33 @@
+#!/usr/bin/env bats
+
+DEFAULT_JUST="${BATS_TEST_DIRNAME}/../system_files/shared/usr/share/ublue-os/just/default.just"
+
+_clean_system_recipe() {
+    awk '
+        /^clean-system:/ { in_recipe=1; next }
+        in_recipe && $0 !~ /^    / && $0 !~ /^$/ { exit }
+        in_recipe && $0 ~ /^    / { print }
+    ' "${DEFAULT_JUST}"
+}
+
+@test "clean-system: uses OS-managed Podman binary" {
+    local recipe
+    recipe="$(_clean_system_recipe)"
+
+    run grep -Fq "/usr/bin/podman image ls" <<< "${recipe}"
+    [ "${status}" -eq 0 ]
+    run grep -Fq "/usr/bin/podman volume ls" <<< "${recipe}"
+    [ "${status}" -eq 0 ]
+    run grep -Fq "/usr/bin/podman image prune -af" <<< "${recipe}"
+    [ "${status}" -eq 0 ]
+    run grep -Fq "/usr/bin/podman volume prune -f" <<< "${recipe}"
+    [ "${status}" -eq 0 ]
+}
+
+@test "clean-system: does not use unqualified podman" {
+    local recipe
+    recipe="$(_clean_system_recipe)"
+
+    run grep -Eq '(^|[[:space:]])podman[[:space:]]' <<< "${recipe}"
+    [ "${status}" -ne 0 ]
+}