chore: initialize my-pi extension bundle

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

@@ -0,0 +1,49 @@
+import type { AutocompleteItem } from "@earendil-works/pi-tui";
+
+interface CompletionDefinition {
+	name: string;
+	description: string;
+}
+
+const TOP_LEVEL_SUBCOMMANDS: CompletionDefinition[] = [
+	{ name: "show", description: "Show current RTK config + runtime summary" },
+	{ name: "path", description: "Show RTK config file path" },
+	{ name: "verify", description: "Check whether rtk binary is available" },
+	{ name: "stats", description: "Show output compaction metrics" },
+	{ name: "clear-stats", description: "Clear output compaction metrics" },
+	{ name: "reset", description: "Reset RTK settings to defaults" },
+	{ name: "help", description: "Show usage help" },
+];
+
+function startsWithFilter(value: string, prefix: string): boolean {
+	if (!prefix) {
+		return true;
+	}
+	return value.startsWith(prefix);
+}
+
+function mapCompletions(values: CompletionDefinition[]): AutocompleteItem[] {
+	return values.map((entry) => ({
+		value: entry.name,
+		label: entry.name,
+		description: entry.description,
+	}));
+}
+
+export function getRtkArgumentCompletions(argumentPrefix: string): AutocompleteItem[] | null {
+	const normalized = argumentPrefix.trimStart().toLowerCase();
+	if (!normalized) {
+		return mapCompletions(TOP_LEVEL_SUBCOMMANDS);
+	}
+
+	if (normalized.includes(" ")) {
+		return null;
+	}
+
+	const filtered = TOP_LEVEL_SUBCOMMANDS.filter((entry) => startsWithFilter(entry.name, normalized));
+	if (filtered.length === 0) {
+		return null;
+	}
+
+	return mapCompletions(filtered);
+}