Docs: Add All Environment Variables from Changelog and Docs to Settings Page

Title: Docs: Add All Environment Variables from Changelog and Docs to Settings Page

Labels: documentation, good first issue

Description

First off, thank you for creating such a powerful and configurable tool.

I've noticed that many useful environment variables are mentioned in the changelog and across various documentation pages, but they haven't been consolidated into the main environment variable table on the official settings page (en/docs/claude-code/settings).

This makes it difficult for users to discover and utilize the full range of configuration options without parsing the entire changelog or stumbling upon them in other articles. Centralizing this information would greatly improve discoverability and the overall user experience.

Missing Environment Variables

Based on a review of the changelog and documentation, the current list on the settings page is missing numerous variables. Here are some of the most critical omissions, grouped by functionality:

• General & Debugging:
• ANTHROPIC_LOG: Mentioned on the bedrock-vertex-proxies page for debugging (export ANTHROPIC_LOG=debug) and in the changelog for v0.2.125.
• DISABLE_INTERLEAVED_THINKING: Introduced in changelog v1.0.1 to allow users to opt-out of the interleaved thinking UI.

• Model Control:
• ANTHROPIC_DEFAULT_SONNET_MODEL: Introduced in changelog v1.0.88 to control the sonnet model alias.
• ANTHROPIC_DEFAULT_OPUS_MODEL: Introduced in changelog v1.0.88 to control the opus and opusplan model aliases.

• Cloud Provider Integration (Critical Omissions):
• AWS_REGION: Described as a required variable on the amazon-bedrock setup page, but is absent from the central list.
• CLOUD_ML_REGION: Required for Vertex AI setup, but not listed.
• ANTHROPIC_VERTEX_PROJECT_ID: Also required for Vertex AI, but not listed.
• DISABLE_PROMPT_CACHING: A key performance flag mentioned for both Bedrock and Vertex, but missing from the table.

• Gateway & Proxy Integration:
• ANTHROPIC_BASE_URL: Critical for configuring LLM Gateways, as shown on the llm-gateway page.
• ANTHROPIC_BEDROCK_BASE_URL / ANTHROPIC_VERTEX_BASE_URL: Provider-specific versions for gateways are also missing.

• Monitoring & Telemetry:
• CLAUDE_CODE_ENABLE_TELEMETRY: The primary switch for enabling OpenTelemetry is not documented in the main table.
• The monitoring-usage page documents an entire suite of OTEL_* variables for fine-grained control, none of which are on the central settings page.

• IDE & Shell Configuration:
• CLAUDE_CODE_AUTO_CONNECT_IDE: Introduced in changelog v1.0.61 for disabling automatic IDE connection.
• CLAUDE_CODE_SHELL_PREFIX: Introduced in changelog v1.0.61 for wrapping shell commands.
• CLAUDE_CODE_GIT_BASH_PATH: An important variable for Windows users, mentioned on the setup page.

Proposed Solution

1. Conduct a thorough review of the changelog and all documentation pages to compile a complete, canonical list of all supported environment variables.
2. Update the main table on the /en/docs/claude-code/settings page to include all of these missing variables.
3. Ensure each variable has a clear and concise description of its purpose and, where applicable, a link to the relevant guide (e.g., Monitoring, Bedrock Setup).

Having a single, comprehensive list of all supported environment variables would be a fantastic resource for both new and advanced users.

Thanks for your consideration.