Tom Boucher 6d24b597a0 feat(sdk): reduce context prompt sizes with truncation and cache-friendly ordering (#1615) ...

* chore: add v1.31.0 npm known-issue notice to issue template config

Adds a top-priority contact link to the issue template chooser so users
are redirected to the Discussions announcement before opening a duplicate
issue about v1.31.0 not being on npm.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* feat(sdk): reduce context prompt sizes with truncation and cache-friendly ordering (#1614)

- Reorder prompt assembly in PromptFactory to place stable content (role,
  workflow, phase instructions) before variable content (.planning/ files),
  enabling Anthropic prompt caching at 0.1x input cost on cache hits
- Add markdown-aware truncation for oversized context files (headings +
  first paragraphs preserved, rest omitted with line counts)
- Add ROADMAP.md milestone extraction to inject only the current milestone
  instead of the full roadmap
- Export truncation utilities from SDK public API
- 60 new + updated tests covering truncation, milestone extraction,
  cache-friendly ordering, and ContextEngine integration

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

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Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-04-03 14:07:04 -04:00

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