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>

CHANGELOG.md

@@ -31,6 +31,8 @@
 - WhatsApp: add self-phone mode (no pairing replies for outbound DMs) and onboarding prompt for personal vs separate numbers (auto allowlist + response prefix for personal).
 - Discord: include all inbound attachments in `MediaPaths`/`MediaUrls` (back-compat `MediaPath`/`MediaUrl` still first).
 - Sandbox: add `agent.sandbox.workspaceAccess` (`none`/`ro`/`rw`) to control agent workspace visibility inside the container; `ro` hard-disables `write`/`edit`.
+- Telegram: default `replyToMode` to `"first"`, add forum topic reply threading for tool sends, and update Telegram docs. Thanks @mneves75 for PR #326.
+- Agent: suppress duplicate messaging tool confirmations and honor per-provider reply threading in auto-replies. Thanks @mneves75 for PR #326.
 - Routing: allow per-agent sandbox overrides (including `workspaceAccess` and `sandbox.tools`) plus per-agent tool policies in multi-agent configs. Thanks @pasogott for PR #380.
 - Sandbox: allow per-agent `routing.agents.<agentId>.sandbox.{docker,browser,prune}.*` overrides for multi-agent gateways (ignored when `scope: "shared"`).
 - Tools: make per-agent tool policies override global defaults and run bash synchronously when `process` is disallowed.