compat with claude skills + hooks support

pi/files/agent/extensions/skills-resolution.ts

@@ -0,0 +1,60 @@
+import { existsSync, statSync } from "node:fs";
+import { dirname, join, resolve } from "node:path";
+import type { ExtensionAPI } from "@mariozechner/pi-coding-agent";
+
+function isDirectory(path: string): boolean {
+	try {
+		return statSync(path).isDirectory();
+	} catch {
+		return false;
+	}
+}
+
+function walkUpDirectories(startDir: string, stopDir?: string): string[] {
+	const directories: string[] = [];
+	const hasStopDir = stopDir !== undefined;
+
+	let current = resolve(startDir);
+	let parent = dirname(current);
+	let reachedStopDir = hasStopDir && current === stopDir;
+	let reachedFilesystemRoot = parent === current;
+
+	directories.push(current);
+	while (!reachedStopDir && !reachedFilesystemRoot) {
+		current = parent;
+		parent = dirname(current);
+		reachedStopDir = hasStopDir && current === stopDir;
+		reachedFilesystemRoot = parent === current;
+		directories.push(current);
+	}
+
+	return directories;
+}
+
+function findNearestGitRoot(startDir: string): string | undefined {
+	for (const directory of walkUpDirectories(startDir)) {
+		if (existsSync(join(directory, ".git"))) {
+			return directory;
+		}
+	}
+	return undefined;
+}
+
+function findClaudeSkillDirs(cwd: string): string[] {
+	const gitRoot = findNearestGitRoot(cwd);
+
+	return walkUpDirectories(cwd, gitRoot)
+		.map((directory) => join(directory, ".claude", "skills"))
+		.filter(isDirectory);
+}
+
+export default function(pi: ExtensionAPI) {
+	pi.on("resources_discover", (event) => {
+		const skillPaths = findClaudeSkillDirs(event.cwd);
+		if (skillPaths.length === 0) {
+			return;
+		}
+
+		return { skillPaths };
+	});
+}