add status indicators for MCP and external service initialization #698
Description
Part of #694
Operations
| ID | Location | Operation | Est. Latency |
|---|---|---|---|
| SPIN-009 | zeph-mcp/src/lib.rs init |
MCP server connections | 1-10s |
| SPIN-010 | zeph-a2a/src/client.rs discover |
A2A agent discovery | 0.5-5s |
| SPIN-021 | zeph-channels/src/telegram.rs init |
Telegram bot setup | 1-5s |
Priority: P1
All are startup operations. MCP init can be particularly slow with multiple servers.