Implement the 031-quality-gates-hygiene feature that strengthens automated quality gates by adding pnpm audit to the check script, v8 coverage thresholds with per-directory auto-ratchet (domain 96%, adapters 71%, persistence 87%), Biome cognitive complexity enforcement (max 15), and keyboard accessibility for the combatant row, while cleaning up all blanket biome-ignore comments, refactoring 5 overly complex functions into smaller helpers, and codifying the early-enforcement principle in the constitution and CLAUDE.md

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

biome.json

@@ -6,7 +6,8 @@
 			"!**/dist/**",
 			"!.claude/**",
 			"!.specify/**",
-			"!specs/**"
+			"!specs/**",
+			"!coverage/**"
 		]
 	},
 	"assist": {
@@ -27,7 +28,15 @@
 	"linter": {
 		"enabled": true,
 		"rules": {
-			"recommended": true
+			"recommended": true,
+			"complexity": {
+				"noExcessiveCognitiveComplexity": {
+					"level": "error",
+					"options": {
+						"maxAllowedComplexity": 15
+					}
+				}
+			}
 		}
 	}
 }