Add option to keep plan mode inline instead of opening a new editor tab

Problem

After updating to v2.1.71, entering plan mode in the VS Code extension (AntiGravity fork) now opens the plan as a separate editor tab. Previously, the plan was displayed inline within the chat panel.

This is disorienting because:

• The plan opens in a new tab, pulling focus away from the conversation
• With multiple Claude instances open, plan tabs from different sessions get mixed together — it's confusing which plan belongs to which conversation
• It mirrors the tab-heavy UX of other AI IDEs (like Gemini in AntiGravity) which many users find uncomfortable
• There's no setting to disable this behavior and keep plans inline

Current behavior

• claudeCode.preferredLocation: "panel" opens Claude as an editor tab (described as "Panel (New Tab)")
• claudeCode.preferredLocation: "sidebar" keeps it in the sidebar but limits you to a single instance
• In both modes, plan mode opens a separate .md file in a new editor tab

Requested behavior

Add a setting (e.g. claudeCode.inlinePlanMode: true) that keeps the plan inside the chat panel — as a collapsible section or inline block — instead of opening it as a separate editor tab.

Environment

• Extension version: 2.1.71
• IDE: AntiGravity (VS Code fork)
• OS: Windows 11

🤖 Generated with Claude Code