fix: tsgo 型チェックエラーを解消（CI 修正）

- lib/slackMock.ts: MockInstance<Procedure> に call signature がなく TS2349 → unknown 経由でキャスト
- shogi/index.ts: ShogiDbRow 型を定義して transitionResults に明示注釈、post() の reply_broadcast を if-else に分岐
- globals.d.ts: japanese / word2vec の declare module を追加
- npm: @types/node-emoji @types/download @types/byline を devDependencies に追加
- 多数のファイルから不要になった @ts-expect-error ディレクティブを除去

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QnnBaVcma8bcEZRCtWZwsU

Author: hakatashi

achievements/index_production.ts

@@ -6,7 +6,6 @@ import {WebClient} from '@slack/web-api';
 import {Mutex} from 'async-mutex';
 import {stripIndent} from 'common-tags';
 import type {CollectionReference} from 'firebase-admin/firestore';
-// @ts-expect-error: Not typed
 import japanese from 'japanese';
 import {countBy, throttle, groupBy, get as getter, chunk, uniq} from 'lodash';
 import moment from 'moment';

character-quiz/index.ts

@@ -8,7 +8,6 @@ import {Mutex} from 'async-mutex';
 import axios from 'axios';
 import cloudinary from 'cloudinary';
 import type {CommonTransformationOptions} from 'cloudinary';
-// @ts-expect-error: Missing types
 import {hiraganize} from 'japanese';
 import {random, sample, range} from 'lodash';
 import {increment} from '../achievements';

globals.d.ts

@@ -12,3 +12,19 @@ declare module "mp3-duration" {
   function mp3Duration(buffer: Buffer): Promise<number>;
   export = mp3Duration;
 }
+
+declare module "japanese" {
+  export function hiraganize(str: string): string;
+  export function romanize(str: string, config?: Record<string, string>): string;
+}
+
+declare module "word2vec" {
+  interface Model {
+    getVector(word: string): {values: number[]} | null;
+    similarity(word1: string, word2: string): number;
+    mostSimilar(word: string, n?: number): Array<{word: string; similarity: number}>;
+  }
+  function loadModel(file: string, callback: (err: Error | null, model: Model) => void): void;
+  export {loadModel};
+  export default {loadModel};
+}

hayaoshi/util.ts

@@ -4,7 +4,6 @@ import {load as cheerioLoad} from 'cheerio';
 import {google, sheets_v4} from 'googleapis';
 import {decode as decodeHtmlEntities} from 'html-entities';
 import iconv from 'iconv-lite';
-// @ts-expect-error
 import {hiraganize} from 'japanese';
 import {random, sample, range} from 'lodash';
 import scrapeIt from 'scrape-it';

kirafan/quiz.ts

@@ -6,8 +6,6 @@ import axios from 'axios';
 import { random, sample } from 'lodash';
 import { ChatPostMessageArguments, GenericMessageEvent } from '@slack/web-api';
 import cloudinary, { UploadApiResponse } from 'cloudinary';
-// eslint-disable-next-line @typescript-eslint/ban-ts-comment
-// @ts-expect-error
 import { hiraganize } from 'japanese';
 import { increment } from '../achievements';
 import { ChannelLimitedBot } from '../lib/channelLimitedBot';

lib/candidateWords.ts

@@ -1,9 +1,7 @@
 import fs from 'fs';
 import path from 'path';
 import {promisify} from 'util';
-// @ts-expect-error: untyped
 import download from 'download';
-// @ts-expect-error: untyped
 import {hiraganize} from 'japanese';
 import {shuffle} from 'lodash';
 

lib/loadFont.ts

@@ -1,5 +1,4 @@
 import * as opentype from 'opentype.js';
-// @ts-expect-error
 import download from 'download';
 import path from 'path';
 import fs from 'fs';

lib/slackMock.ts

@@ -41,7 +41,7 @@ const createWebClient = (
 				const path = stack.join('.');
 				const methodName = last(stack);
 				if (registeredMocks.has(path)) {
-					return registeredMocks.get(path)(...args);
+					return (registeredMocks.get(path) as unknown as (...args: any[]) => any)(...args);
 				}
 				if (isMockMethodCall(methodName)) {
 					const mock = vi.fn();

package-lock.json

@@ -161,6 +161,9 @@
   },
   "devDependencies": {
     "@hakatashi/eslint-config": "^1.19.0",
+    "@types/byline": "^4.2.36",
+    "@types/download": "^8.0.5",
+    "@types/node-emoji": "^1.8.2",
     "@typescript-eslint/eslint-plugin": "^6.0.0",
     "@typescript-eslint/parser": "^6.0.0",
     "@typescript/native-preview": "^7.0.0-dev.20260612.1",