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/tools/bash.ts

@@ -5,7 +5,7 @@ import { join } from "node:path";
 import type { AgentTool } from "@mariozechner/pi-agent-core";
 import { Type } from "@sinclair/typebox";
 import { spawn } from "child_process";
-import { getShellConfig, killProcessTree } from "../../utils/shell.js";
+import { getShellConfig, getShellEnv, killProcessTree } from "../../utils/shell.js";
 import { DEFAULT_MAX_BYTES, DEFAULT_MAX_LINES, formatSize, type TruncationResult, truncateTail } from "./truncate.js";
 
 /**
@@ -65,6 +65,7 @@ const defaultBashOperations: BashOperations = {
 			const child = spawn(shell, [...args, command], {
 				cwd,
 				detached: true,
+				env: getShellEnv(),
 				stdio: ["ignore", "pipe", "pipe"],
 			});