Add a setting to hide the usage-limit warning banner in the chat UI

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

The Claude Code VS Code extension shows a non-dismissible banner above the chat input once usage is high (e.g. "You've used 81% of your weekly limit · resets in 2d · View usage"). I track my session/weekly usage with my own status-bar tool, so the banner is redundant and consumes vertical space in the chat panel. There's currently no setting, env var, or slash command to disable it.

Proposed Solution

A config option to suppress the usage-limit banner — e.g. a settings.json key (claude-code.hideUsageWarnings) or an env var (CLAUDE_CODE_DISABLE_USAGE_BANNER), defaulting to off so current behavior is unchanged.

Alternative Solutions

Checked the VS Code extension settings, settings.json reference, and env-var list — nothing suppresses the banner. Nearest toggles (CLAUDE_CODE_DISABLE_FEEDBACK_SURVEY, CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC) are unrelated.

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

Environment

Claude Code: VS Code extension
OS: Windows 11