Collapsed Read/Search summaries no longer show file names or patterns

Description

Previously, collapsed tool output would show the actual file path or search pattern being operated on. For example:

• Read src/utils/config.ts (ctrl+o to expand)
• Searched for *.tsx (ctrl+o to expand)

Now it just shows a generic summary like:

• Read 1 file (ctrl+o to expand)
• Searched 3 files (ctrl+o to expand)

Why this matters

The old behavior was significantly more useful for following along with what Claude is doing without having to expand every single tool result. When Claude is performing multiple reads and searches in sequence, being able to see at a glance which files were read or what patterns were searched makes it much easier to understand the agent's reasoning and progress.

With the current behavior, you have to press ctrl+o on every collapsed result to see what actually happened, which breaks the flow of watching Claude work.

Expected behavior

Collapsed read/search summaries should show the file name, path, or glob pattern — not just a count. For example:

• Read src/utils/config.ts (single file)
• Read 3 files: src/a.ts, src/b.ts, src/c.ts (multiple files, space permitting)
• Searched for "handleError" in *.ts

Environment

• OS: macOS
• Claude Code version: latest (2.x)