simplex-mergelisted

<!-- Source: https://github.com/xxthunder/xxthunder-agentic-skills/tree/develop/plugins/xxthunder-paperless-skills/skills/simplex-merge --> # Simplex Scanner PDF Merge Post-processing skill: interleave two already-scanned PDFs (fronts + reversed backs) into one correctly ordered document. This skill does **not** drive the scanner — if the user wants to *start* scanning, hand off to `naps2-scan`. When scanning double-sided documents with a single-sided (simplex) scanner, you end up with two files: - **Odd pages** (front sides, often named "ungerade") — in correct order - **Even pages** (back sides, often named "gerade") — in **reverse** order, because the user flips the stack to scan the backs, so the last even page is scanned first ## When to Use - The user already has **two existing PDF files** in the working directory that look like front/back halves of a double-sided document. - Filenames contain `ungerade`/`gerade`, `odd`/`even`, or `front`/`back`. - The user explicitly asks to "merge these", "interleave these PDFs", "combine odd and even", or similar. ## When NOT to Use - The user wants to **start a new scan** (phrases like "scan this", "let's scan", "scan another", "digitize") — use the `naps2-scan` skill instead. This skill will not produce scans. - The user has only one PDF file — no merge needed. - The user has more than two scan PDFs — this skill pairs exactly one odd file with one even file. ## Prerequisites - **`uv` on PATH** — the skill's merge script un