fix: plan tasks after initial exploration

tests/prompt.test.ts

@@ -10,15 +10,17 @@ import {
 } from "../src/prompt.ts";
 import { TaskState } from "../src/state.ts";
 
-test("keeps task guidance short while requiring planning before large work", () => {
+test("keeps task guidance short with planning after exploration", () => {
   assert.equal(TASK_PROMPT_GUIDELINES.length, 2);
   const prompt = TASK_PROMPT_GUIDELINES.join("\n");
-  assert.match(prompt, /large, multi-stage work/);
-  assert.match(prompt, /set_tasks before exploration as the only first-batch tool/);
-  assert.match(prompt, /append with force false by default/);
-  assert.match(prompt, /Start one task in-progress; skip smaller work/);
-  assert.match(prompt, /Use update_task when tracked work starts, blocks, or finishes/);
-  assert.ok(prompt.split(/\s+/).length < 60);
+  assert.match(prompt, /work with 3\+ distinct steps/);
+  assert.match(prompt, /explore enough to understand the scope/);
+  assert.match(prompt, /then call set_tasks before implementation/);
+  assert.match(prompt, /otherwise skip tracking/);
+  assert.match(prompt, /Start one task in-progress/);
+  assert.match(prompt, /update_task when tasks start, block, or finish/);
+  assert.match(prompt, /keep statuses accurate before the final response/);
+  assert.ok(prompt.split(/\s+/).length < 40);
 });
 
 test("uses a compact one-shot recovery reminder without embedding task data", () => {