Instructor v1.15.3

Instructor releases published Instructor v1.15.3. This automated release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: What's Changed fix(templating): skip non-text Parts in GENAI/VertexAI mode by @jxnl in https://github.com/567-labs/instructor/pull/2259 chore(deps): bump the poetry group across 1 directory with 6 updates by @dependabot bot in https://github.com/567-labs/instructor/pull/2258 fix: preserve descriptions in responses tools mode by @jxnl in https://github.com/567-labs/instructor/pull/2261 test: cover partial streaming for PEP 604 unions by @jxnl in https://github.com/567-labs/instructor/pull/2262 build(docs): use uv for pages deploy by @jxnl in https://github.com/567-labs/instructor/pull/2266 fix(streaming): surface reasoning summary events in RESPONSES TOOLS mode by @ayushh0110 in https://github.com/567-labs/instructor/pull/2299 fix(logging): redact api key and sensitive keys in handle response model debug log by @xodn348 in https://github.com/567-labs/instructor/pull/2297 fix(anthropic):…

• Review the official Instructor releases release notes before upgrading.
• Check compatibility, migration, and security notes against your current agent stack.
• Run focused regression tests before production rollout.