Add ModEquivalencies dump script for Foulborn pairing investigation

Export script that dumps ModEquivalencies.dat rows to check if
MutatedUnique mod pairings are stored there. If they are, we can
automate Foulborn original↔mutation mod pairing instead of
maintaining a manual table.

Author: EtherealCarnivore

src/Export/Scripts/dumpModEquivalencies.lua

@@ -0,0 +1,46 @@
+-- Dump ModEquivalencies rows to check if Foulborn (MutatedUnique) pairings exist
+-- Run from the Export tool: loads dat files, prints matching rows
+
+local found = 0
+local total = 0
+
+print("=== ModEquivalencies Dump ===")
+print("")
+
+-- First pass: dump ALL rows that involve MutatedUnique mods
+print("--- Rows containing MutatedUnique mods ---")
+for row in dat("ModEquivalencies"):Rows() do
+	total = total + 1
+	local id = row.Id or ""
+	local m0 = row.ModsKey0 and row.ModsKey0.Id or "(nil)"
+	local m1 = row.ModsKey1 and row.ModsKey1.Id or "(nil)"
+	local m2 = row.ModsKey2 and row.ModsKey2.Id or "(nil)"
+
+	if m0:match("MutatedUnique") or m1:match("MutatedUnique") or m2:match("MutatedUnique")
+		or id:match("MutatedUnique") or id:match("Foulborn") or id:match("Mutated") then
+		found = found + 1
+		print(string.format("Row: Id=%s", id))
+		print(string.format("  ModsKey0: %s", m0))
+		print(string.format("  ModsKey1: %s", m1))
+		print(string.format("  ModsKey2: %s", m2))
+		print("")
+	end
+end
+
+print(string.format("--- Found %d matching rows out of %d total ---", found, total))
+print("")
+
+-- Second pass: dump a sample of ALL rows (first 20) so we can see the general structure
+print("--- Sample of first 20 rows (any type) ---")
+local count = 0
+for row in dat("ModEquivalencies"):Rows() do
+	count = count + 1
+	if count > 20 then break end
+	local id = row.Id or ""
+	local m0 = row.ModsKey0 and row.ModsKey0.Id or "(nil)"
+	local m1 = row.ModsKey1 and row.ModsKey1.Id or "(nil)"
+	local m2 = row.ModsKey2 and row.ModsKey2.Id or "(nil)"
+	print(string.format("  [%d] Id=%s | M0=%s | M1=%s | M2=%s", count, id, m0, m1, m2))
+end
+print("")
+print("Done.")