Commit 5d5ee224a825

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+/**
+ * Subagent Commands - Slash commands for common subagent workflows
+ * 
+ * Provides easy-to-use slash commands that invoke the subagent tool:
+ * - /scout <query> - Fast reconnaissance with scout agent
+ * - /implement <query> - Full workflow: scout → planner → worker
+ * - /scout-and-plan <query> - Planning workflow: scout → planner
+ * - /review-code <query> - Review workflow: scout → reviewer
+ */
+
+import type { ExtensionAPI } from "@mariozechner/pi-coding-agent";
+
+export default function (pi: ExtensionAPI) {
+	// /scout - Quick reconnaissance
+	pi.registerCommand("scout", {
+		description: "Quick codebase reconnaissance with scout agent",
+		handler: async (args, ctx) => {
+			if (!args.trim()) {
+				ctx.ui.notify("Usage: /scout <query>", "error");
+				return;
+			}
+
+			// Send a message that will cause the AI to use the subagent tool
+			ctx.ui.notify("Dispatching scout agent...", "info");
+			pi.sendUserMessage(`Use the subagent tool to run the scout agent with this task: ${args}`);
+		},
+	});
+
+	// /implement - Full workflow
+	pi.registerCommand("implement", {
+		description: "Full implementation workflow: scout → planner → worker",
+		handler: async (args, ctx) => {
+			if (!args.trim()) {
+				ctx.ui.notify("Usage: /implement <query>", "error");
+				return;
+			}
+
+			ctx.ui.notify("Starting implementation workflow...", "info");
+			pi.sendUserMessage(
+				`Use the subagent tool with chain mode to implement: ${args}\n\n` +
+				`Chain:\n` +
+				`1. scout agent: find all code relevant to: ${args}\n` +
+				`2. planner agent: create implementation plan using {previous}\n` +
+				`3. worker agent: implement the plan from {previous}`
+			);
+		},
+	});
+
+	// /scout-and-plan - Planning workflow
+	pi.registerCommand("scout-and-plan", {
+		description: "Planning workflow: scout → planner (no implementation)",
+		handler: async (args, ctx) => {
+			if (!args.trim()) {
+				ctx.ui.notify("Usage: /scout-and-plan <query>", "error");
+				return;
+			}
+
+			ctx.ui.notify("Starting planning workflow...", "info");
+			pi.sendUserMessage(
+				`Use the subagent tool with chain mode for planning: ${args}\n\n` +
+				`Chain:\n` +
+				`1. scout agent: find all code relevant to: ${args}\n` +
+				`2. planner agent: create implementation plan using {previous}`
+			);
+		},
+	});
+
+	// /review-code - Review workflow
+	pi.registerCommand("review-code", {
+		description: "Code review workflow: scout → reviewer",
+		handler: async (args, ctx) => {
+			if (!args.trim()) {
+				ctx.ui.notify("Usage: /review-code <query>", "error");
+				return;
+			}
+
+			ctx.ui.notify("Starting code review...", "info");
+			pi.sendUserMessage(
+				`Use the subagent tool with chain mode to review: ${args}\n\n` +
+				`Chain:\n` +
+				`1. scout agent: find all code relevant to: ${args}\n` +
+				`2. reviewer agent: review the code from {previous}`
+			);
+		},
+	});
+
+	// /subagent-help - Show available agents
+	pi.registerCommand("subagent-help", {
+		description: "Show available subagents and usage",
+		handler: async (_args, ctx) => {
+			const help = `
+# Subagent Extension Help
+
+## Available Slash Commands
+
+- \`/scout <query>\` - Quick reconnaissance (uses Haiku, fast & cheap)
+- \`/implement <query>\` - Full workflow: scout → planner → worker
+- \`/scout-and-plan <query>\` - Planning only: scout → planner
+- \`/review-code <query>\` - Code review: scout → reviewer
+
+## Available Agents
+
+- **scout** (Haiku) - Fast recon, returns compressed context
+- **planner** (Sonnet) - Creates implementation plans
+- **reviewer** (Sonnet) - Code review
+- **worker** (Sonnet) - General purpose, full capabilities
+
+## Direct Tool Usage
+
+You can also ask the AI to use the subagent tool directly:
+
+**Single agent:**
+> Use scout to find all authentication code
+
+**Parallel:**
+> Run scouts in parallel: find DB schemas, find API endpoints
+
+**Chain:**
+> Chain: scout finds auth code, then planner suggests improvements
+
+## Examples
+
+\`\`\`
+/scout find all Tekton Task definitions
+/implement add Redis caching to session store
+/scout-and-plan refactor authentication module
+/review-code check security in auth handlers
+\`\`\`
+
+## Agent Details
+
+Location: ~/.pi/agent/agents/*.md
+`;
+			ctx.ui.notify("Subagent help displayed", "info");
+			console.log(help);
+		},
+	});
+}