OpenClaw: Rosie/Lenny Telegram host aliases and claimable work

[mfethe1]

What to build

Add a single-Telegram-service routing path where @rosie and @lenny explicitly target host aliases, while untagged actionable Telegram messages become claimable work that exactly one eligible host can claim and execute.

Acceptance criteria

• Explicit @rosie and @lenny messages route through Fleet Controller host alias resolution.
• Untagged actionable Telegram messages can be claimed by one eligible host.
• Rosie and Lenny cannot start simultaneous Agent Runs for the same message.
• Existing command-ref signing, delivery records, and task leases remain the authoritative execution fences.

Blocked by

None - can start immediately.