2026-02-15-claude-encrypted-thinking-fix.md

Fix encrypted thinking messages in Claude models

• Date: 2026-02-15
• Type: fix
• Scope: claude4_5, base_client, types, tests
• PR: #74

中文版

What changed

• Encrypted (redacted) thinking blocks from Claude must be preserved in history and sent back to the server unchanged; the client no longer drops them (#74).

Backfilled when the changelog was reorganized by release version; see the git history of the release range for full context.