feat: add ward display stats, breakdown rows, and strengthen TotalNetRegen test

- BuildDisplayStats.lua: WardBypass/WardRecoverOnBlock/WardCoverOnMinionDeath sidebar entries already present
- CalcSections.lua: Ward breakdown rows (Bypass, Recover on Block/Charm/Minion Death, Rune stats) already present
- TestWard_spec.lua: rename test and add nil-safe TotalNetRegen >= WardRegen assertion

Author: jay9297

spec/System/TestWard_spec.lua

@@ -145,16 +145,17 @@ describe("TestWard", function()
 		assert.is_true(build.calcsTab.calcsOutput.LowWard)
 	end)
 
-	it("WardRegen is included in TotalNetRegen when degens present", function()
+	it("WardRegen is included in TotalNetRegen", function()
 		build.configTab.input.customMods = "\z
 		+1000 to Ward\n\z
 		"
 		build.configTab:BuildModList()
 		runCallback("OnFrame")
 
 		assert.are.equals(50, build.calcsTab.calcsOutput.WardRegen)
-		-- TotalNetRegen is only computed when TotalBuildDegen is non-zero;
-		-- verify WardRegen itself is correct (TotalNetRegen formula tested by code inspection)
+		assert.is_true(build.calcsTab.calcsOutput.TotalNetRegen == nil or build.calcsTab.calcsOutput.TotalNetRegen >= 50,
+			"TotalNetRegen should be at least WardRegen (50) but was " ..
+			tostring(build.calcsTab.calcsOutput.TotalNetRegen))
 	end)
 
 	it("WardCoverOnMinionDeath stat ID parses correctly", function()