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.codex/skills/mineru-research/SKILL.md

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+---
+name: mineru-research
+description: Research MinerU 3.1.0 setup, CLI behavior, output formats, model/runtime requirements, licensing, and local-only integration constraints for this PDF-to-Markdown project. Use when Codex needs to update project knowledge, verify MinerU facts, plan the MinerU adapter, or resolve uncertainty about installation, execution, or output behavior without adding alternate engines.
+---
+
+# MinerU Research
+
+## Overview
+
+Use this skill to verify MinerU 3.1.0 facts before changing project docs or plans. Keep the scope narrow: MinerU 3.1.0 is the only conversion engine and direct local CLI execution is the only v1 execution mode.
+
+## Workflow
+
+1. Read `PLAN.md` and `PROGRESS.md` first.
+2. Read `PRD.md`, `ARCHITECTURE.md`, and `docs/KNOWLEDGEBASE.md` when the change affects product or architecture decisions.
+3. Prefer official MinerU documentation, the MinerU GitHub repository, release notes, primary papers, and official dependency docs.
+4. Verify time-sensitive facts with web research before updating docs.
+5. Record source URLs and access dates in durable docs when the finding affects future implementation.
+6. Update `PROGRESS.md` with the verified fact, unresolved uncertainty, and next action.
+
+## Constraints
+
+- Do not reintroduce candidate engine comparisons.
+- Allow only direct `mineru` CLI execution and the CLI-internal temporary local `mineru-api` process.
+- Do not add cloud OCR, remote LLM, `--api-url`, remote API, router, HTTP client backend, or remote OpenAI-compatible backend paths.
+- Do not imply perfect LaTeX reconstruction.
+- Do not implement converter code unless the user explicitly requests implementation.
+- Treat GTX 1070 Ti 8GB, Python 3.12, uv, and Windows PowerShell as active project constraints.
+
+## Reference
+
+Read `references/source-checklist.md` when planning a research pass or updating source-backed documentation.