Integrate with the mods actually installed beside us

New integrations.lua, loaded pcall-wrapped at the end of main.lua;
every integration gates on its target's global so a missing mod is
silence. Both targets load before us by priority.

JokerDisplay: each known joker's display definition gains a live
'(2 combos)' counter in JD's own parenthetical reminder style --
the same partner count the hover tooltip names -- by appending a
dynamic element to reminder_text (created when absent) and wrapping
calc_function to fill card.joker_display_values. The wrapper pcalls
the original calc and blanks the text when the new jd_combos config
toggle is off, so it flips mid-run in both directions.

Too Many Jokers: registers the SEARCH_FIELD_FUNCS hook its api.md
documents, indexing every joker under its tag labels on both sides,
so the collection search finds jokers by 'money', 'Hearts',
'held-card retriggers'. Unknown centers stay nil.

The smoke scenario now asserts the JokerDisplay patch against the
real mod: 13/13 in-game.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

test.lua

@@ -111,6 +111,19 @@ UIBox = function(args) return {def = args and args.definition, remove = function
 create_option_cycle = function() return {n = 'R', config = {}, nodes = {}} end
 localize = function() error('no localization outside the game') end
 
+-- Cross-mod integration stubs, present BEFORE main.lua loads (both real mods
+-- load before this one: JokerDisplay at priority -1e9, TMJ at -1000). One
+-- JokerDisplay definition of each shape: with a reminder_text row and without.
+JokerDisplay = {Definitions = {
+    j_baron = {text = {{text = 'x'}},
+        calc_function = function(card)
+            card.joker_display_values = card.joker_display_values or {}
+            card.joker_display_values.orig_ran = true
+        end},
+    j_mime = {text = {{text = 'x'}}, reminder_text = {{text = '(hand)'}}},
+}}
+TMJ = {SEARCH_FIELD_FUNCS = {}}
+
 local data = dofile('synergies.lua')
 dofile('main.lua')
 
@@ -673,6 +686,46 @@ JCA.register_pair('j_mod_test', 'j_baron', 'test blurb')
 eq(JCA.score('j_mod_test', 'j_baron') - before, 4, 'JCA.register_pair adds the +4 pair bonus')
 JCA.db.j_mod_test = nil -- keep the UI section on vanilla data only
 
+--------------------------------------------------------------------------------
+section('Integrations: JokerDisplay counter and TMJ search')
+--------------------------------------------------------------------------------
+
+-- JokerDisplay: every known joker with a definition gains the counter, in
+-- both definition shapes.
+eq(JCA.integrations.jokerdisplay, 2, 'both stub JokerDisplay definitions were patched')
+ok(JokerDisplay.Definitions.j_baron.reminder_text,
+    'a definition without reminder_text gains one for the counter')
+eq(#JokerDisplay.Definitions.j_mime.reminder_text, 3,
+    'an existing reminder_text grows by separator + counter')
+
+-- The wrapped calc_function fills the live count and keeps the original.
+field('j_baron', 'j_mime')
+local jd_card = G.jokers.cards[1]
+jd_card.joker_display_values = {}
+JokerDisplay.Definitions.j_baron.calc_function(jd_card)
+eq(jd_card.joker_display_values.jca_combos, '(1 combo)',
+    'the counter shows the live board partner count')
+ok(jd_card.joker_display_values.orig_ran,
+    'and the original calc_function still runs first')
+
+JCA.config.jd_combos = false
+JokerDisplay.Definitions.j_baron.calc_function(jd_card)
+eq(jd_card.joker_display_values.jca_combos, '',
+    'the config toggle blanks the counter mid-run')
+JCA.config.jd_combos = true
+
+-- Too Many Jokers: the search hook indexes jokers by tag labels and stays
+-- silent on centers the database does not know.
+eq(JCA.integrations.toomanyjokers, 1, 'the TMJ search hook registered')
+local tmj_fields = TMJ.SEARCH_FIELD_FUNCS[1]({key = 'j_baron'})
+local tmj_hit = false
+for _, f in ipairs(tmj_fields) do
+    if f == 'held-card retriggers' then tmj_hit = true end
+end
+ok(tmj_hit, 'TMJ search finds Baron under its tag labels')
+eq(TMJ.SEARCH_FIELD_FUNCS[1]({key = 'j_totally_modded'}), nil,
+    'an unknown center returns nil, not an error')
+
 --------------------------------------------------------------------------------
 section('UI: catalog pages build and animate')
 --------------------------------------------------------------------------------