[UI/UX] Non-Technical Activity View: Collapsed Traces, Intent Highlighting, and Hover Inspection

Problem Statement

Non-technical stakeholders and developers monitoring agent activity in VS Code find the chat panel cluttered. Technical labels (e.g. Bash) obscure the high-level functional intent, making progress tracking difficult.

Detailed Feature Request

1. Default Collapsed Traces

• Collapse IN and OUT execution blocks by default to keep the chat history focused on intent for each bash.

2. Improved Visual Hierarchy

• Highlight Functional Intent: Emphasize human-readable descriptions (e.g. "Inspect the failing search assertion") in a bold highlight color (#e5c07b).
• Dim Technical Labels: Subdue utility badges like Bash so they do not draw immediate visual focus.

3. Hover-to-Inspect Command Details

• Hide the underlying shell input line during normal reading, still having it as optionally uncollapsible.
• Show the IN bash command dynamically via an inline expansion or tooltip when hovering over the action description.

No files or tests are named. Start by locating the chat panel's activity rendering and the existing IN/OUT execution blocks; compare how action descriptions, Bash labels, and command details are displayed. Done means traces are collapsed by default, intent is visually prominent, technical labels are subdued, and command details remain available on hover or expansion.