chore: initialize my-pi extension bundle

pi-rtk-optimizer/src/command-rewriter.ts

@@ -0,0 +1,48 @@
+import { resolveRtkRewrite, type RtkRewriteProviderOptions } from "./rtk-rewrite-provider.js";
+import { splitLeadingEnvAssignments } from "./shell-env-prefix.js";
+import type { ExtensionAPI } from "@earendil-works/pi-coding-agent";
+import type { RtkIntegrationConfig } from "./types.js";
+
+export interface RewriteDecision {
+	changed: boolean;
+	originalCommand: string;
+	rewrittenCommand: string;
+	reason: "ok" | "empty" | "already_rtk" | "no_match";
+	warning?: string;
+}
+
+export async function computeRewriteDecision(
+	command: string,
+	_config: RtkIntegrationConfig,
+	pi: ExtensionAPI,
+	rewriteOptions: RtkRewriteProviderOptions = {},
+): Promise<RewriteDecision> {
+	if (!command || !command.trim()) {
+		return { changed: false, originalCommand: command, rewrittenCommand: command, reason: "empty" };
+	}
+
+	const trimmedStart = command.trimStart();
+	const effectiveCommand = splitLeadingEnvAssignments(trimmedStart).command.trimStart();
+	if (effectiveCommand === "rtk" || effectiveCommand.startsWith("rtk ")) {
+		return { changed: false, originalCommand: command, rewrittenCommand: command, reason: "already_rtk" };
+	}
+
+	const result = await resolveRtkRewrite(pi, command, rewriteOptions);
+
+	if (result.changed && result.rewrittenCommand) {
+		return {
+			changed: true,
+			originalCommand: command,
+			rewrittenCommand: result.rewrittenCommand,
+			reason: "ok",
+		};
+	}
+
+	return {
+		changed: false,
+		originalCommand: command,
+		rewrittenCommand: command,
+		reason: "no_match",
+		warning: result.error,
+	};
+}