feat(agent): add controlled task execution

src/routes/chatStream.ts

@@ -3,6 +3,7 @@ import type { Event as OpencodeEvent, Part } from "@opencode-ai/sdk/v2";
 import { writeLlmRequestAuditLog } from "../audit/llmRequestAudit.js";
 import { type SupportedModel } from "../chat/models.js";
 import { config } from "../config.js";
+import { executionPlanSchema } from "./executionPlan.js";
 import { logger } from "../logger.js";
 import {
   type PermissionReply,
@@ -115,6 +116,15 @@ const toRuntimeModel = (model?: SupportedModel) => {
   };
 };
 
+const parseToolOutput = (output: unknown): unknown => {
+  if (typeof output !== "string") return output;
+  try {
+    return JSON.parse(output);
+  } catch {
+    return null;
+  }
+};
+
 const emitFallbackMessage = async (
   runtime: OpencodeRuntimeAdapter,
   sessionId: string,
@@ -715,6 +725,17 @@ export const streamPromptResponse = async ({
           });
         }
         if (part.type === "tool") {
+          if (part.tool === "publish_execution_plan" && part.state.status === "completed" && !emittedToolParts.has(part.id)) {
+            const plan = executionPlanSchema.safeParse(part.state.input);
+            const output = parseToolOutput(part.state.output);
+            const serverPublished = output && typeof output === "object" &&
+              typeof (output as Record<string, unknown>).plan_revision === "number";
+            if (plan.success) write("execution_plan", {
+              ...plan.data,
+              session_id: clientSessionId,
+              ...(serverPublished ? { server_published: true } : {}),
+            });
+          }
           if (!firstToolEventLogged) {
             firstToolEventLogged = true;
             logDevelopmentDebug("first tool event received", {
@@ -792,7 +813,7 @@ export const streamPromptResponse = async ({
           });
           if (
             !emittedToolParts.has(part.id) &&
-            (hasToolParams(toolParams) || isToolFinalState)
+            (part.tool === "publish_execution_plan" ? isToolFinalState : (hasToolParams(toolParams) || isToolFinalState))
           ) {
             emittedToolParts.add(part.id);
             toolCallCount += 1;