feat: add canonical typed tool outputs

packages/core/agent-loop/tests/tool-order.spec.ts

@@ -12,7 +12,7 @@ import LlmService from '@deepseek-ai/dsh-llm'
 import SessionStore, { SessionId, foldRequestHeader } from '@deepseek-ai/dsh-session'
 import SystemPrompt, { TOOL_ORDER_REST } from '@deepseek-ai/dsh-system-prompt'
 import type { Config as SystemPromptConfig } from '@deepseek-ai/dsh-system-prompt'
-import ToolRegistry, { defineTool } from '@deepseek-ai/dsh-tools'
+import ToolRegistry, { defineContentToolFixture } from '@deepseek-ai/dsh-tools'
 import AgentRegistry, { type Agent } from '@deepseek-ai/dsh-agent'
 
 import AgentLoop from '@deepseek-ai/dsh-agent-loop'
@@ -42,7 +42,7 @@ function waitForIdle(ctx: Context, agent: Agent): Promise<void> {
 }
 
 function registerNamed(ctx: Context, name: string) {
-  ctx.tools.register(defineTool({
+  ctx.tools.register(defineContentToolFixture({
     name,
     description: `the ${name} tool`,
     parameters: {},