chore(vendor): import pi 0.85.1

Imported as a linear vendor commit so forge rebases do not replay the upstream root tree.

git-subtree-dir: third_party/pi

git-subtree-split: d981de1229ef899957bbe968bc8dcda02a21f477

third_party/pi/packages/ai/tsconfig.build.json

@@ -0,0 +1,11 @@
+{
+	"extends": "../../tsconfig.base.json",
+	"compilerOptions": {
+		"outDir": "./dist",
+		"rootDir": "./src",
+		"module": "NodeNext",
+		"moduleResolution": "NodeNext"
+	},
+	"include": ["src/**/*.ts"],
+	"exclude": ["node_modules", "dist", "**/*.d.ts", "src/**/*.d.ts"]
+}