add pdftomd

.codex/commands/run-mineru-research.md

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+---
+description: Research current MinerU 3.1.0 facts for local integration planning
+argument-hint: [research-question]
+allowed-tools: [Read, Glob, Grep, Bash, WebFetch, Edit]
+---
+
+# /run-mineru-research
+
+Research MinerU 3.1.0 facts that affect this project's documentation or future implementation.
+
+## Arguments
+
+The user invoked this command with: $ARGUMENTS
+
+## Workflow
+
+1. Read `PLAN.md`, `PROGRESS.md`, `ARCHITECTURE.md`, and `docs/KNOWLEDGEBASE.md`.
+2. Use official MinerU documentation, the MinerU GitHub repository, primary papers, and official dependency documentation.
+3. Verify facts that can change: install commands, supported Python/CUDA versions, CLI flags, output formats, model download behavior, and licenses.
+4. Record sources with URLs and access dates when updating docs.
+5. Keep findings scoped to MinerU 3.1.0; do not add candidate-engine comparisons.
+6. Update `PROGRESS.md` with what was verified and what remains uncertain.
+
+## Guardrails
+
+- Allow only direct `mineru` CLI execution and the CLI-internal temporary local `mineru-api` process.
+- Do not add cloud OCR, hosted LLM, `--api-url`, remote API, router, HTTP client backend, or remote OpenAI-compatible backend paths.
+- Do not turn research notes into implementation code.
+- If official sources conflict, stop and ask for a decision instead of guessing.