[jb-thery]

Promotes the validated develop tree (merge of #217) to main for v6.4.0.

Release highlights:

• get nothing instead of noise for questions your sources cannot answer: on three real bases,
  58 of 90 off-topic and 24 of 90 near-domain questions are refused, up from 41 and 1, with
  every answer still in place
• trust weak-evidence flags again: correct answers flagged as weak fall from 43 to 14
• see how Ragmir compares: on its own repository the answering file reaches the top 3 for 76% of
  developer questions, against 56% for a LangChain.js pipeline and 70% for MiniSearch BM25
• reach GitHub and npm from the landing hero, and every page from a sectioned mobile drawer

Release details:

• Retrieval: each Transformers index stores a noise floor measured from 24 off-topic probe
  questions; only passages nearer than it count as strong vector matches, a search whose first
  five results are all weak answers nothing, and mxbai flags weak evidence below 30% of the
  question's words instead of 50%
• Diagnostics: retired configs throw CONFIG_MIGRATION_REQUIRED, rgr doctor asks for storage
  compaction on fragmented indexes and for an ingest when no floor is stored, and searches no
  longer print LanceDB deprecation warnings
• Benchmarks: pnpm bench:competitors compares Ragmir with LangChain.js, Orama, and
  MiniSearch with identical files, questions, embedding model, and vectors
• Code health: Knip gates validation, duplicated percentile, JSON Lines, run-state, and error
  page code now has one implementation, and dead code is removed
• Landing: GitHub and npm hero buttons, a drawer of card rows with Documentation and Project
  sections, and one shared list of project links across the hero, drawer, and footer
• Documentation: configuration, migration, API, CLI, agent integration, troubleshooting, the
  agent skill, llms.txt, contributor guides, and both READMEs

Verification:

• pass pnpm validate with Biome, Knip, 556 Core tests and 27 landing tests with coverage gates,
  API, CLI, MCP and public-surface smoke checks, builds, publint, and release checks
• pass the pull request checks: Quality gate, Linux x64, macOS ARM64 and Windows x64
  portability on Node 22, Commitlint, and CodeQL TypeScript analysis
• measure 6.3.1 against this release on three real bases with 260 answerable, 90 off-topic, and
  90 near-domain questions: no false refusal and unchanged warm search latency
• verify the staging landing in English and French at 375 px and 1440 px in a browser

[github-actions]

🎉 This PR is included in version 6.4.0 🎉

The release is available on:

• v6.4.0
• GitHub release

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