feat(services): add .ignore list for distro-default noise

systemd-units/.ignore is a user-maintainable list of units to suppress
from 'just services-drift' uncurated output. Starts with three systemd
presets that are harmless noise: remote-fs.target,
systemd-network-generator.service, systemd-userdbd.socket.

The dotfile is outside the *.txt glob so services / services-enable
don't accidentally pick it up.

2 files changed, 13 insertions, 1 deletions

diff --git a/justfile b/justfile
index ede837f..26058db 100644
--- a/justfile
+++ b/justfile
@@ -167,10 +167,15 @@ services-drift:
     tmp=$(mktemp -d); trap 'rm -rf "$tmp"' EXIT
     cat systemd-units/*.txt 2>/dev/null \
         | grep -v '^\s*#' | grep -v '^\s*$' | sort -u > "$tmp/curated"
+    if [ -f systemd-units/.ignore ]; then
+        grep -v '^\s*#' systemd-units/.ignore | grep -v '^\s*$' | sort -u > "$tmp/ignore"
+    else
+        : > "$tmp/ignore"
+    fi
     systemctl list-unit-files --state=enabled --no-legend 2>/dev/null \
         | awk '{print $1}' | grep -vE '@\.' | sort -u > "$tmp/enabled"
     comm -23 "$tmp/curated" "$tmp/enabled" | sed 's/^/  not-enabled: /'
-    comm -13 "$tmp/curated" "$tmp/enabled" | sed 's/^/  uncurated:   /'
+    comm -13 "$tmp/curated" "$tmp/enabled" | comm -23 - "$tmp/ignore" | sed 's/^/  uncurated:   /'
 
 
 # ═══════════════════════════════════════════════════════════════════
diff --git a/systemd-units/.ignore b/systemd-units/.ignore
new file mode 100644
index 0000000..2e2f56a
--- /dev/null
+++ b/systemd-units/.ignore
@@ -0,0 +1,7 @@
+# Systemd units to suppress from 'just services-drift' uncurated output.
+# Typically distro defaults enabled by systemd presets that are neither
+# worth curating nor worth disabling. One unit per line, # comments OK.
+
+remote-fs.target
+systemd-network-generator.service
+systemd-userdbd.socket