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/agent/src/harness/tools/index.ts

@@ -0,0 +1,23 @@
+export {
+	type BashExecution,
+	type BashPrepare,
+	type BashToolDetails,
+	type BashToolInput,
+	type BashToolOptions,
+	createBashTool,
+} from "./bash.ts";
+export {
+	createEditTool,
+	type EditToolDetails,
+	type EditToolInput,
+} from "./edit.ts";
+export {
+	createReadTool,
+	type ReadImageProcessor,
+	type ReadImageProcessorResult,
+	type ReadToolDetails,
+	type ReadToolInput,
+	type ReadToolOptions,
+} from "./read.ts";
+export type { ExecutionToolContext } from "./tool-context.ts";
+export { createWriteTool, type WriteToolInput } from "./write.ts";