[bug] Deprecated LLM model (claude-sonnet-4-20250514) in Phase 0

[KANA-33]

Where

• Phase: 00-setup-and-tooling / 04-apis-and-keys
• Files / URLs:
  • phases/00-setup-and-tooling/04-apis-and-keys/code
  • phases/00-setup-and-tooling/04-apis-and-keys/docs

What's wrong

The codebase currently specifies 'claude-sonnet-4-20250514' as the default LLM model. This model is now deprecated and is scheduled to reach its end-of-life on June 15th, 2026. The configuration needs to be updated to a newer, supported Anthropic model to prevent upcoming failures.

Reproduce

1. Navigate to the 04-apis-and-keys phase directory.
2. Run either of the first API call test scripts
3. Observe the deprecation warning returned in the console/logs.

Environment

• OS: Windows 11 (WSL - Ubuntu 24.04)
• Python / Typescript
• Local

Screenshot or logs

The model 'claude-sonnet-4-20250514' is deprecated and will reach end-of-life on June 15th, 2026. Please migrate to a newer model. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.