pfUI.events was a bare CallbackRegistry for pfUI's custom events. Build it
from ClassicAPI's EventRegistry instead, so the same object also takes game
events through RegisterFrameEventAndCallback, sharing one frame for all of
them.
Move the frames that existed only to listen for a few events onto it:
libspell, focus, pixelperfect, innervatecall, loothistory, unusable,
equipmentmanager (bank + window refresh), the actionbar grid, updatenotify,
turtle-wow's steady shot, nampower's spell queue, superwow's group tracking
and unitxp's notifications, plus newitem and mapreveal, which used the
global EventRegistry. Handlers take their payload as arguments instead of
the event/arg globals, and the per-frame PLAYER_LOGOUT teardown goes away,
since the registry unregisters its frame on logout.
libspell.GetSpellInfo now returns the spell ID at position 9 and caches
it with SafePack and unpack.
The action bar tracks self.spellID for macro-cast spells and shows the
tooltip with GameTooltip:SetSpellByID. Gather the slot, book type, and
spell ID from one GetSpellInfo call instead of a separate GetSpellIndex
lookup.
Clear existing spell cache tables with table.wipe instead of creating new tables when LEARNED_SPELL_IN_TAB fires. This preserves existing table references (spellmaxrank, spellindex, spellinfo), avoiding stale references and potential bugs while being slightly more efficient. Change applied in libs/libspell.lua.
GetSpellInfo internals now delegate to ClassicAPI's GetSpellInfo for the
DBC metadata read instead of scraping castTime/range out of the tooltip.
Drops the libtipscan dependency from libspell and the regex-based parsing
of SPELL_CAST_TIME_SEC/MIN/SPELL_RANGE. Same 8-value return shape so all
call sites (libtotem, libpredict, libcast, actionbar) continue working.
Brues