[shogi] Introduce ChannelLimitedBot & support #tsgbot-games channel

[Copilot]

The shogi bot was hardcoded to CHANNEL_SANDBOX and had no support for CHANNEL_GAMES or the cross-channel progress notification system introduced in #1099.

Changes

shogi/index.js

• Converts the top-level function export to ShogiBot extends ChannelLimitedBot
• wakeWordRegex covers all start patterns: 将棋, N手詰め, N手以上詰め, N手必勝将棋
• postMessage() overridden to preserve icon_url behavior (base class uses icon_emoji)
• state.channel tracks active game channel; state.gameMessageTs tracks the initial board post ts for progress message lifecycle
• onWakeWord() handles game initialization and returns the initial post's ts (plugs into the progress message system)
• onMessageEvent() calls super first (wake word + channel redirect), then handles thread commands (もう一回, 正着手, piece moves, resign, 盤面)
• end() calls deleteProgressMessage(state.gameMessageTs) to clean up the "進行中のゲーム" notification in #sandbox on game end

class ShogiBot extends ChannelLimitedBot {
    constructor(slackClients) {
        super(slackClients);
        this.username = 'shogi';
        this.wakeWordRegex = /^(?:将棋|\d+手(?:詰め|必勝将棋)|\d+手以上(?:詰め|必勝将棋))$/;
        // ...
    }

    async onWakeWord(message, channel) {
        // sets state.channel = channel, posts initial board, returns result.ts
    }
}
module.exports = (slackClients) => new ShogiBot(slackClients);

shogi/index.test.js

• Adds jest.mock('../lib/slackUtils') (required by ChannelLimitedBot)
• Switches test channel env var from CHANNEL_SANDBOX to CHANNEL_GAMES

Original prompt

---

This section details on the original issue you should resolve

<issue_title>[shogi] #tsgbot-games 対応 & ChannelLimitedBotクラスを導入</issue_title>
<issue_description>Issue #1099 の対応の一環として、 shogi BOTの改修を行う。

Slackの #tsgbot-games チャンネルからの起動に対応できるようにする。また、 lib/channelLimitedBot.ts で定義されたChannelLimitedBotクラスを利用し、起動チャンネルの指定と進行中のゲームの通知を導入する。

改修にあたっては、すでに行われた以下の3つのBOTの同様の修正の修正内容を必ず参照し、これらのスタイルを可能な限り踏襲する。

なお、対象のBOTがJavaScriptで書かれている場合は、今回の改修でTypeScriptに書き換える必要はない。このプロジェクトではJavaScriptとTypeScriptを混在させることができる。また、そのほか改修に関係ない改良を加える必要はない。

anime bot

• Pull Request: Refactor anime bot to use ChannelLimitedBot for #tsgbot-games support #1138
• diff: https://github.com/tsg-ut/slackbot/pull/1138.diff
• Main file: anime/index.js

character-quiz bot

• Pull Request: character-quiz: ChannelLimetedBotクラスを使用するよう修正 #1122
• diff: https://github.com/tsg-ut/slackbot/pull/1122.diff
• Main file: character-quiz/index.ts

achievement-quiz bot

• Pull Request: Refactor achievement-quiz to use ChannelLimitedBot for #tsgbot-games support #1124
• diff: https://github.com/tsg-ut/slackbot/pull/1124.diff
• Main file: achievement-quiz/index.ts</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes [shogi] #tsgbot-games 対応 & ChannelLimitedBotクラスを導入 #1176

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[sonarqubecloud]

Quality Gate failed

Failed conditions
9.2% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud