hermes - 💡(How to fix) Fix Telegram: render todo tool updates as in-place checklist

Problem

Telegram gateway does not visibly render todo tool updates as an in-place editable checklist in the topic. During dogfood from Telegram, todo tool calls updated internal state but no checklist appeared in the topic, so users cannot track long work like the TUI task list.

Evidence

• User expected in-topic task list while planning agent-dispatcher #25.
• Two todo tool calls from the Telegram session produced no visible message in the topic.
• Searching gateway code shows generic tool progress and Telegram edit support, but no todo result renderer / send_or_update_status path for todo results.

Proposed design

Add a Telegram gateway status renderer for todo tool completion:

• On todo tool completion, parse returned JSON {todos, summary}.
• Render a compact checklist:
  • [ ] pending
  • [~] in_progress
  • [x] completed
  • [-] cancelled
• Send once and then edit the same Telegram status message for subsequent todo updates in the same run/session/topic.
• Scope status keys by platform/chat/thread/session/run so different topics do not overwrite each other.
• Keep final assistant replies as normal new messages.
• Fail closed: if parsing fails, keep existing generic tool progress behavior and log debug/warning without breaking the turn.

Acceptance criteria

• Unit test: first todo completion sends one checklist status message.
• Unit test: second todo completion edits the same message, not a new one.
• Unit test: topic/thread/session isolation.
• Unit test: final assistant reply still sends as normal message.
• Telegram dogfood in a real topic confirms the checklist appears and updates in place.
• No unrelated cron/kanban/dashboard changes included.