feat(catalog): wire up Icons collector (TOC + router); fix MysticScrollProbe nil crash

CoaExporter/Core.lua

@@ -378,7 +378,7 @@ CoaExporter commands:
 
 /coae export all|talents|spellbook|gear|enchants
 /coae export mdgear|mdenchants|mdspellbook|md (full wiki)
-/coae catalog all|skills|talents
+/coae catalog all|skills|talents|icons
 /coae catalog dispels [class]|passives [class]|status
 /coae scrolls scan|export|reset|status
 /coae sv on|off    (SavedVariables for character export)
@@ -408,7 +408,7 @@ local function HandleCatalog(rest)
     local sub, arg = rest:match("^(%S+)%s*(.*)$")
     sub = sub or rest
 
-    if sub == "all" or sub == "skills" or sub == "talents" then
+    if sub == "all" or sub == "skills" or sub == "talents" or sub == "icons" then
         if not AE.Catalog or not AE.Catalog.Run then
             DEFAULT_CHAT_FRAME:AddMessage("CoaExporter: catalog module not loaded")
             return
@@ -432,7 +432,7 @@ local function HandleCatalog(rest)
             tostring(meta.lastScanAt or "never"), tostring(meta.filter or "-"),
             nSkills, nDispels, nPassives, nTalents))
     else
-        DEFAULT_CHAT_FRAME:AddMessage("CoaExporter: /coae catalog [all|skills|talents|dispels|passives|status]")
+        DEFAULT_CHAT_FRAME:AddMessage("CoaExporter: /coae catalog [all|skills|talents|icons|dispels|passives|status]")
     end
 end