fix: convert MCP tool schemas from JSON Schema to Zod for SDK v1.29.0

The MCP SDK v1.29.0 changed server.tool() to require Zod schemas
(raw shapes) instead of plain JSON Schema objects. The old format
triggered "expected a Zod schema or ToolAnnotations" errors.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/server/mcp/tools/items.ts

@@ -1,3 +1,4 @@
+import { z } from "zod";
 import type { db as prodDb } from "../../../db/index.ts";
 import {
 	createItem,
@@ -29,24 +30,14 @@ export const itemToolDefinitions = [
 		description:
 			"List all items in the gear collection, optionally filtered by category.",
 		inputSchema: {
-			type: "object" as const,
-			properties: {
-				categoryId: {
-					type: "number",
-					description: "Filter items by category ID",
-				},
-			},
+			categoryId: z.number().optional().describe("Filter items by category ID"),
 		},
 	},
 	{
 		name: "get_item",
 		description: "Get a single item by its ID, including all details.",
 		inputSchema: {
-			type: "object" as const,
-			properties: {
-				id: { type: "number", description: "The item ID" },
-			},
-			required: ["id"],
+			id: z.number().describe("The item ID"),
 		},
 	},
 	{
@@ -54,60 +45,48 @@ export const itemToolDefinitions = [
 		description:
 			"Add a new item to the gear collection. Use this for items you've already decided on. For items you're still researching, use create_thread instead.",
 		inputSchema: {
-			type: "object" as const,
-			properties: {
-				name: { type: "string", description: "Item name" },
-				categoryId: { type: "number", description: "Category ID" },
-				weightGrams: { type: "number", description: "Weight in grams" },
-				priceCents: { type: "number", description: "Price in cents" },
-				notes: { type: "string", description: "Notes about the item" },
-				productUrl: { type: "string", description: "URL to the product page" },
-				imageFilename: {
-					type: "string",
-					description: "Filename of an uploaded image",
-				},
-				imageSourceUrl: {
-					type: "string",
-					description: "Original URL the image was fetched from",
-				},
-			},
-			required: ["name", "categoryId"],
+			name: z.string().describe("Item name"),
+			categoryId: z.number().describe("Category ID"),
+			weightGrams: z.number().optional().describe("Weight in grams"),
+			priceCents: z.number().optional().describe("Price in cents"),
+			notes: z.string().optional().describe("Notes about the item"),
+			productUrl: z.string().optional().describe("URL to the product page"),
+			imageFilename: z
+				.string()
+				.optional()
+				.describe("Filename of an uploaded image"),
+			imageSourceUrl: z
+				.string()
+				.optional()
+				.describe("Original URL the image was fetched from"),
 		},
 	},
 	{
 		name: "update_item",
 		description: "Update an existing item's fields.",
 		inputSchema: {
-			type: "object" as const,
-			properties: {
-				id: { type: "number", description: "The item ID to update" },
-				name: { type: "string", description: "Item name" },
-				categoryId: { type: "number", description: "Category ID" },
-				weightGrams: { type: "number", description: "Weight in grams" },
-				priceCents: { type: "number", description: "Price in cents" },
-				notes: { type: "string", description: "Notes about the item" },
-				productUrl: { type: "string", description: "URL to the product page" },
-				imageFilename: {
-					type: "string",
-					description: "Filename of an uploaded image",
-				},
-				imageSourceUrl: {
-					type: "string",
-					description: "Original URL the image was fetched from",
-				},
-			},
-			required: ["id"],
+			id: z.number().describe("The item ID to update"),
+			name: z.string().optional().describe("Item name"),
+			categoryId: z.number().optional().describe("Category ID"),
+			weightGrams: z.number().optional().describe("Weight in grams"),
+			priceCents: z.number().optional().describe("Price in cents"),
+			notes: z.string().optional().describe("Notes about the item"),
+			productUrl: z.string().optional().describe("URL to the product page"),
+			imageFilename: z
+				.string()
+				.optional()
+				.describe("Filename of an uploaded image"),
+			imageSourceUrl: z
+				.string()
+				.optional()
+				.describe("Original URL the image was fetched from"),
 		},
 	},
 	{
 		name: "delete_item",
 		description: "Delete an item from the gear collection by ID.",
 		inputSchema: {
-			type: "object" as const,
-			properties: {
-				id: { type: "number", description: "The item ID to delete" },
-			},
-			required: ["id"],
+			id: z.number().describe("The item ID to delete"),
 		},
 	},
 ];