Welcome screen suggests creating CLAUDE.md even when one already exists

Description

The VS Code extension welcome screen shows a static tip suggesting users create a CLAUDE.md file, even when one already exists in the project root.

Expected behavior

The welcome screen should check for an existing CLAUDE.md (at project root, user-level, or subdirectories) before suggesting the user create one. If one exists, either skip the tip or show a different message (e.g., "CLAUDE.md loaded").

Current behavior

Every new chat window shows the same onboarding tips regardless of project state. This is confusing because it implies the file is missing when it isn't.

Environment

• Claude Code VS Code extension
• Windows 11
• Project with existing CLAUDE.md at repo root