feat(coding-agent): ResourceLoader, package management, and /reload command (#645)

- Add ResourceLoader interface and DefaultResourceLoader implementation
- Add PackageManager for npm/git extension sources with install/remove/update
- Add session.reload() and session.bindExtensions() APIs
- Add /reload command in interactive mode
- Add CLI flags: --skill, --theme, --prompt-template, --no-themes, --no-prompt-templates
- Add pi install/remove/update commands for extension management
- Refactor settings.json to use arrays for skills, prompts, themes
- Remove legacy SkillsSettings source flags and filters
- Update SDK examples and documentation for ResourceLoader pattern
- Add theme registration and loadThemeFromPath for dynamic themes
- Add getShellEnv to include bin dir in PATH for bash commands

packages/coding-agent/src/core/auth-storage.ts

@@ -18,8 +18,9 @@ import {
 	type OAuthProvider,
 } from "@mariozechner/pi-ai";
 import { chmodSync, existsSync, mkdirSync, readFileSync, writeFileSync } from "fs";
-import { dirname } from "path";
+import { dirname, join } from "path";
 import lockfile from "proper-lockfile";
+import { getAgentDir } from "../config.js";
 
 export type ApiKeyCredential = {
 	type: "api_key";
@@ -42,7 +43,7 @@ export class AuthStorage {
 	private runtimeOverrides: Map<string, string> = new Map();
 	private fallbackResolver?: (provider: string) => string | undefined;
 
-	constructor(private authPath: string) {
+	constructor(private authPath: string = join(getAgentDir(), "auth.json")) {
 		this.reload();
 	}