syncthing: add yncthing-resolve-conflicts script

modules/nixos/syncthing/syncthing-resolve-conflicts.sh

@@ -0,0 +1,28 @@
+DRY_RUN=true
+
+if [[ "${1:-}" == "--apply" ]]; then
+    DRY_RUN=false
+    echo "--- RUNNING IN LIVE MODE: Files will be renamed ---"
+else
+    echo "--- RUNNING IN DRY-RUN MODE: No changes will be made ---"
+    echo "--- Use 'syncthing-resolve-conflicts --apply' to perform the rename ---"
+fi
+
+find . -type f -name "*sync-conflict*" ! -name "*.db" -print0 | while IFS= read -r -d '' file; do
+    new=$(echo "$file" | sed -E 's/\.sync-conflict-[0-9]{8}-[0-9]{6}-[A-Z0-9]+//')
+
+    if [[ "$file" != "$new" ]]; then
+        if [ "$DRY_RUN" = true ]; then
+            echo "[DRY-RUN] Would rename: '$file' -> '$new'"
+        else
+            if [[ -f "$new" ]]; then
+                echo "[SKIP] Target already exists: '$new'"
+            else
+                echo "Renaming: '$file' -> '$new'"
+                mv "$file" "$new"
+            fi
+        fi
+    fi
+done
+
+echo "--- Done ---"