Update slash-command help and add Feb 27 changelog entries

client/public/changelog.json

@@ -3,6 +3,8 @@
     {
       "date": "February 27, 2026",
       "items": [
+        "Added chat actions with /me.",
+        "Added /version and /up commands for server status.",
         "Added user roles/permissions system.",
         "Clock item type now is an actual talking clock with optional alarm and top of hour announcement."
       ]

client/public/help.json

@@ -42,7 +42,7 @@
         },
         {
           "keys": "Slash commands",
-          "description": "In chat, use /me <action>, /up for uptime, /version for server version, and /reboot [message] if allowed"
+          "description": "In chat, use /me <action>, /up for uptime, and /version for server version"
         },
         {
           "keys": "Comma / Period",