docs: finalize roadmap entries for flake updates and offline resilience

features/scripts/utils/nomarchy-update-available

@@ -21,9 +21,37 @@ if ! ping -c 1 -W 2 1.1.1.1 >/dev/null 2>&1; then
     exit 0
 fi
 
-# Get current status
-CURRENT_REV=$(nix flake metadata "$REPO_DIR" --json | jq -r '.lock.nodes.root.inputs.nixpkgs')
-# This check is relatively expensive, so Waybar runs it with a high interval (21600s = 6h).
+# Get the current locked revision for Nomarchy
+LOCKED_REV=$(jq -r '.nodes.nomarchy.locked.rev // empty' "$REPO_DIR/flake.lock" 2>/dev/null)
 
-# Just return an icon if we are in a system that can be updated.
-echo ""
+if [ -z "$LOCKED_REV" ]; then
+    # Could be named something else or missing, fallback to generic icon
+    echo ""
+    exit 0
+fi
+
+# Check if we are pinned in flake.nix
+if grep -q "rev=" "$REPO_DIR/flake.nix" 2>/dev/null; then
+    # We are pinned. An update implies unpinning and upgrading.
+    # We can just show the icon to encourage the user to update and unpin.
+    echo ""
+    exit 0
+fi
+
+# Get remote latest revision
+REMOTE_URL="https://git.bemagri.xyz/bernardo/Nomarchy.git"
+# Fast-fail check with git ls-remote (usually takes < 1s if online)
+LATEST_REV=$(git ls-remote "$REMOTE_URL" HEAD 2>/dev/null | awk '{print $1}')
+
+if [ -z "$LATEST_REV" ]; then
+    # Couldn't reach remote
+    exit 0
+fi
+
+# Compare revisions
+if [ "$LOCKED_REV" != "$LATEST_REV" ]; then
+    echo ""
+else
+    # No updates available
+    echo ""
+fi