Answer the architecture pass: the config that owns the contract, and what each runtime leg buys

tsconfig.build.json

@@ -1,9 +1,29 @@
 {
-  "extends": "./tsconfig.json",
   "compilerOptions": {
     "lib": ["ES2022"],
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
     "target": "ES2022",
-    "types": []
+    "types": [],
+
+    "allowImportingTsExtensions": true,
+    "erasableSyntaxOnly": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "verbatimModuleSyntax": true,
+
+    "strict": true,
+    "exactOptionalPropertyTypes": true,
+    "noFallthroughCasesInSwitch": true,
+    "noImplicitOverride": true,
+    "noImplicitReturns": true,
+    "noUncheckedIndexedAccess": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+
+    "forceConsistentCasingInFileNames": true,
+    "skipLibCheck": true
   },
-  "exclude": ["src/**/*.test.ts"]
+  "exclude": ["src/**/*.test.ts"],
+  "include": ["src"]
 }