Reduce transcript noise from consecutive tool calls

[ShaanNarendran]

Problem

Tool-heavy turns fill the transcript with individual tool-call panels. Even with compact output enabled, a sequence of reads or searches can dominate the visible conversation and make assistant messages difficult to follow.

The existing Ctrl+O display modes are not obvious to a new user, and compact mode still renders every call separately.

Desired outcome

• Keep tool activity compact by default.
• Group or summarize consecutive tool calls where practical.
• Show enough information to communicate progress, such as tool name, target, status, and call count.
• Let users expand a group or individual call to inspect full inputs and results.
• Make the expansion control discoverable in the interface.

Compatibility and security impact

This should be a TUI presentation change only. Canonical tool-call and tool-result events must remain complete and unchanged.

Issue tracking

Axl issue mirror: #33 | GitHub #33