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iacore 894d769051 refactor(skills): align MPI skills with Agent Skills best practices

The skill metadata had drifted: every SKILL.md name field lacked the
mpi- prefix, contradicting the directory names and the Agent Skills
specification. Descriptions were also missing negative triggers, making
it easy for the agent to load the wrong skill.

Rewrote the pdf-to-docx skill to follow progressive disclosure: the main
SKILL.md dropped from 318 lines to 80, with detailed code examples moved
to on-demand references. Added uv run instructions and /// script PEP 723
metadata so dependencies are declared inline and installed automatically.
Fixed the pptx skill's script paths and added CLI usage messages to both
pptx scripts and the normalize script.

Removed the empty self-review directory that was superseded by the unified
translation-review skill.

2026-07-14 23:18:55 +08:00

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PDF Inspection Guide

Before converting a PDF, dump its text spans to understand fonts, sizes, bullets, and structure.

Dump spans

python3 << 'PY'
import pymupdf
doc = pymupdf.open("input.pdf")
for pi in range(len(doc)):
    page = doc[pi]
    blocks = page.get_text("dict")["blocks"]
    for block in blocks:
        if block["type"] != 0: continue
        for line in block["lines"]:
            for span in line["spans"]:
                bbox = span["bbox"]
                flags = span["flags"]
                attrs = []
                if flags & 2**1: attrs.append("I")
                if flags & 2**4: attrs.append("B")
                print(f"  Y={bbox[1]:.0f} [{span['size']:.1f}pt {'+'.join(attrs) or '-'}] {span['font']} | {span['text']}")
PY

What to identify

Fonts used — map PDF font names to DOCX font names.
Bullet mechanism — Wingdings glyphs, Unicode bullets, or something else.
Header hierarchy — which font size marks section vs. sub-section headers.
Numbered lists — delimiter style: 1), 1., 1）, 一、.
Images — check page.get_images() on each page.
Special sections — tables, verses, attribution lines, page numbers, forms.

Page numbers

Page-number fonts are usually small and repeated on every page. Add them to skip_fonts in the config so they do not leak into body text.

Attribution lines

Lines like ——节选自... often use a different font or indentation. The converter breaks paragraphs on these; verify the break point after conversion.

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