kanata-cmd: Add deprecation notice

* The kanata package now includes both the GUI and TUI, so there
  is no need for a separate kanata-cmd package.
* Relates to #15529, #17831.

Author: z-Fng

bucket/kanata-cmd.json

@@ -1,13 +1,10 @@
 {
+    "##": "Deprecate this manifest after 2026-09-01.",
     "version": "1.9.0",
-    "description": "A software keyboard remapper, compiled with cmd support.",
+    "description": "A software keyboard remapper, compiled with cmd support (Deprecated, please use `extras/kanata` instead).",
     "homepage": "https://github.com/jtroo/kanata",
     "license": "LGPL-3.0-only",
-    "notes": [
-        "This version of Kanata is compiled with cmd support.",
-        "More info about security concerns and cmd support here: https://github.com/jtroo/kanata/blob/main/docs/config.adoc#danger-enable-cmd",
-        "Configuration Guide: https://github.com/jtroo/kanata/blob/main/docs/config.adoc"
-    ],
+    "notes": "This manifest is deprecated and scheduled for removal on 2026-09-01. Please use `extras/kanata` instead.",
     "architecture": {
         "64bit": {
             "url": "https://github.com/jtroo/kanata/releases/download/v1.9.0/kanata_cmd_allowed.exe#/kanata-cmd.exe",