refactor(todo): drop priority field — keep the tool simple

Backend removed priority from TodoItem; FE parser + renderer updated to
match (status-only: pending/in_progress/completed/cancelled).

3 files changed, 16 insertions, 53 deletions

diff --git a/src/features/surface-host/logic/todo.test.ts b/src/features/surface-host/logic/todo.test.ts
index d310345..225ecde 100644
--- a/src/features/surface-host/logic/todo.test.ts
+++ b/src/features/surface-host/logic/todo.test.ts
@@ -1,26 +1,25 @@
 import { describe, expect, it } from "vitest";
 import { parseTodoPayload, type TodoItem } from "./todo";
 
-const item = (
-	content: string,
-	status: TodoItem["status"] = "pending",
-	priority: TodoItem["priority"] = "medium",
-): TodoItem => ({ content, status, priority });
+const item = (content: string, status: TodoItem["status"] = "pending"): TodoItem => ({
+	content,
+	status,
+});
 
 describe("parseTodoPayload", () => {
 	it("parses a well-formed payload with items", () => {
 		const data = parseTodoPayload({
 			todos: [
-				item("Write tests", "in_progress", "high"),
-				item("Ship it", "pending", "medium"),
-				item("Read docs", "completed", "low"),
+				item("Write tests", "in_progress"),
+				item("Ship it", "pending"),
+				item("Read docs", "completed"),
 			],
 		});
 		expect(data).toEqual({
 			todos: [
-				item("Write tests", "in_progress", "high"),
-				item("Ship it", "pending", "medium"),
-				item("Read docs", "completed", "low"),
+				item("Write tests", "in_progress"),
+				item("Ship it", "pending"),
+				item("Read docs", "completed"),
 			],
 		});
 	});
@@ -30,9 +29,7 @@ describe("parseTodoPayload", () => {
 	});
 
 	it("preserves item order", () => {
-		const data = parseTodoPayload({
-			todos: [item("a"), item("b"), item("c")],
-		});
+		const data = parseTodoPayload({ todos: [item("a"), item("b"), item("c")] });
 		expect(data?.todos.map((t) => t.content)).toEqual(["a", "b", "c"]);
 	});
 
@@ -53,17 +50,6 @@ describe("parseTodoPayload", () => {
 		]);
 	});
 
-	it("accepts all three priority values", () => {
-		const data = parseTodoPayload({
-			todos: [
-				item("h", "pending", "high"),
-				item("m", "pending", "medium"),
-				item("l", "pending", "low"),
-			],
-		});
-		expect(data?.todos.map((t) => t.priority)).toEqual(["high", "medium", "low"]);
-	});
-
 	it.each([
 		["null", null],
 		["a number", 7],
@@ -71,15 +57,10 @@ describe("parseTodoPayload", () => {
 		["missing todos key", { foo: [] }],
 		["todos not an array", { todos: "x" }],
 		["entry not an object", { todos: ["x"] }],
-		["entry missing content", { todos: [{ status: "pending", priority: "low" }] }],
-		[
-			"entry with non-string content",
-			{ todos: [{ content: 1, status: "pending", priority: "low" }] },
-		],
-		["entry missing status", { todos: [{ content: "x", priority: "low" }] }],
+		["entry missing content", { todos: [{ status: "pending" }] }],
+		["entry with non-string content", { todos: [{ content: 1, status: "pending" }] }],
+		["entry missing status", { todos: [{ content: "x" }] }],
 		["entry with invalid status", { todos: [item("x", "done" as never)] }],
-		["entry missing priority", { todos: [{ content: "x", status: "pending" }] }],
-		["entry with invalid priority", { todos: [item("x", "pending", "urgent" as never)] }],
 	])("returns null for invalid payload: %s", (_label, payload) => {
 		expect(parseTodoPayload(payload)).toBeNull();
 	});
diff --git a/src/features/surface-host/logic/todo.ts b/src/features/surface-host/logic/todo.ts
index b8e027b..e442e78 100644
--- a/src/features/surface-host/logic/todo.ts
+++ b/src/features/surface-host/logic/todo.ts
@@ -14,12 +14,10 @@
  * (the model hasn't created a list / cleared it); the caller hides the panel.
  */
 export type TodoStatus = "pending" | "in_progress" | "completed" | "cancelled";
-export type TodoPriority = "high" | "medium" | "low";
 
 export interface TodoItem {
 	readonly content: string;
 	readonly status: TodoStatus;
-	readonly priority: TodoPriority;
 }
 
 export interface TodoData {
@@ -27,18 +25,11 @@ export interface TodoData {
 }
 
 const STATUSES = new Set<string>(["pending", "in_progress", "completed", "cancelled"]);
-const PRIORITIES = new Set<string>(["high", "medium", "low"]);
 
 function isTodoItem(v: unknown): v is TodoItem {
 	if (typeof v !== "object" || v === null) return false;
 	const o = v as Record<string, unknown>;
-	return (
-		typeof o.content === "string" &&
-		typeof o.status === "string" &&
-		STATUSES.has(o.status) &&
-		typeof o.priority === "string" &&
-		PRIORITIES.has(o.priority)
-	);
+	return typeof o.content === "string" && typeof o.status === "string" && STATUSES.has(o.status);
 }
 
 export function parseTodoPayload(payload: unknown): TodoData | null {
diff --git a/src/features/surface-host/ui/TodoList.svelte b/src/features/surface-host/ui/TodoList.svelte
index ca49f34..b7b2183 100644
--- a/src/features/surface-host/ui/TodoList.svelte
+++ b/src/features/surface-host/ui/TodoList.svelte
@@ -1,15 +1,9 @@
 <script lang="ts">
-	import { parseTodoPayload, type TodoPriority, type TodoStatus } from "../logic/todo";
+	import { parseTodoPayload } from "../logic/todo";
 
 	let { payload }: { readonly payload: unknown } = $props();
 
 	const data = $derived(parseTodoPayload(payload));
-
-	const priorityDot: Record<TodoPriority, string> = {
-		high: "bg-error",
-		medium: "bg-warning",
-		low: "bg-base-content/30",
-	};
 </script>
 
 {#if data !== null && data.todos.length > 0}
@@ -61,9 +55,6 @@
 				>
 					{todo.content}
 				</span>
-
-				<!-- Priority dot -->
-				<span class="mt-1 h-2 w-2 shrink-0 rounded-full {priorityDot[todo.priority]}"></span>
 			</li>
 		{/each}
 	</ul>