(bug) Update TUI tab labels to match Web

[BobDickinson]

Summary

Align the TUI’s monitoring tab labels with the web Inspector so Protocol, Network, and Console mean the same thing in both UIs.

Background

Web monitoring tabs use Protocol (JSON-RPC history), Network (HTTP fetch), and Console (stdio stderr). The TUI used Messages, HTTP Requests, and Logging for those same streams — and “Logging” was especially confusing because web’s Logs tab is MCP logging/* notifications (which the TUI does not have).

Changes

• Rename TUI tab labels:
  • Messages → Protocol
  • HTTP Requests → Network
  • Logging → Console
• Update pane headers and clients/tui/README.md to match.
• Reassign accelerators so each is a letter in the tab name, unique, and preferably early in the word:
  • Protocol → p (frees p from Prompts)
  • Network → n
  • Console → o (c remains Connect)
  • Prompts → m (prompts)
• Underline the accelerator letter in the tab bar even when it is mid-word (e.g. Prompts, Console).
  Internal tab ids (messages / requests / logging) are left unchanged for this pass.

Out of scope

• Adding a TUI equivalent of web’s MCP Logs tab (feature gap, not a rename).
• Renaming internal tab ids / focus keys.

Acceptance

• TUI tab bar shows Protocol / Network / Console with web-aligned meaning
• Accelerators unique, each a letter in its label; Connect (c) still works
• README documents the renamed tabs
• npm run ci green