chore: initialize my-pi extension bundle

pi-rtk-optimizer/src/record-utils.ts

@@ -0,0 +1,50 @@
+export function toRecord(value: unknown): Record<string, unknown> {
+	if (!value || typeof value !== "object" || Array.isArray(value)) {
+		return {};
+	}
+	return value as Record<string, unknown>;
+}
+
+export interface TextContentBlock {
+	type: string;
+	text?: string;
+	[key: string]: unknown;
+}
+
+/**
+ * Narrows an unknown tool-result content block to a text block carrying a
+ * string `text` payload. Shared by the compactor and the streaming sanitizer
+ * so both walk content blocks with one consistent guard.
+ */
+export function isTextContentBlock(block: unknown): block is TextContentBlock & { text: string } {
+	if (!block || typeof block !== "object" || Array.isArray(block)) {
+		return false;
+	}
+	const contentBlock = block as TextContentBlock;
+	return contentBlock.type === "text" && typeof contentBlock.text === "string";
+}
+
+/**
+ * Walks tool-result content blocks, invoking `transform` for each text block.
+ * Returns the mapped content and whether any text block changed. Non-text
+ * blocks pass through untouched. Shared by the compactor and the streaming
+ * sanitizer so both walk content with one consistent loop.
+ */
+export function mapTextContentBlocks(
+	content: unknown[],
+	transform: (block: TextContentBlock & { text: string }) => string | null,
+): { changed: boolean; mapped: unknown[] } {
+	let changed = false;
+	const mapped = content.map((block) => {
+		if (!isTextContentBlock(block)) {
+			return block;
+		}
+		const nextText = transform(block);
+		if (nextText === null || nextText === block.text) {
+			return block;
+		}
+		changed = true;
+		return { ...block, text: nextText };
+	});
+	return { changed, mapped };
+}