chore(release): v1.9.8 — compact mobile filter bars + AdminDatePicker everywhere

Combines the undeployed v1.9.7 (compact 2-up filter bars) with the date-field
unification (all date fields via AdminDatePicker + mode-aware placeholder).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "app-ts",
-  "version": "1.9.7",
+  "version": "1.9.8",
   "description": "",
   "main": "dist/server.js",
   "scripts": {