feat(telegram): wire replyToMode config, add forum topic support, fix messaging tool duplicates

Changes:
- Default replyToMode from "off" to "first" for better threading UX
- Add messageThreadId and replyToMessageId params for forum topic support
- Add messaging tool duplicate detection to suppress redundant block replies
- Add sendMessage action to telegram tool schema
- Add @grammyjs/types devDependency for proper TypeScript typing
- Remove @ts-nocheck and fix all type errors in send.ts
- Add comprehensive docs/telegram.md documentation
- Add PR-326-REVIEW.md with John Carmack-level code review

Test coverage:
- normalizeTextForComparison: 5 cases
- isMessagingToolDuplicate: 7 cases
- sendMessageTelegram thread params: 5 cases
- handleTelegramAction sendMessage: 4 cases
- Forum topic isolation: 4 cases

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/telegram/bot.ts

@@ -205,7 +205,7 @@ export function createTelegramBot(opts: TelegramBotOptions) {
       (entry) => entry === username || entry === `@${username}`,
     );
   };
-  const replyToMode = opts.replyToMode ?? cfg.telegram?.replyToMode ?? "off";
+  const replyToMode = opts.replyToMode ?? cfg.telegram?.replyToMode ?? "first";
   const streamMode = resolveTelegramStreamMode(cfg);
   const nativeEnabled = cfg.commands?.native === true;
   const nativeDisabledExplicit = cfg.commands?.native === false;