Doc Handler - 文档处理

# Doc Handler - 文档处理

读取和编辑 Word、PDF、Excel 文档。使用 python-docx、pdfplumber、openpyxl

## Discovery Metadata
- Category: `oracles`
- Framework: `ClawHub`
- Tags: `doc`, `excel`, `pdf`, `word`, `handler`, `python-docx`, `pdfplumber`, `openpyxl`

## Agent Execution Policy

This listing is **discovery metadata only**. Canonical instructions are maintained by ClawHub.

### Before Executing Actions

1. **Fetch canonical instructions** from: https://clawhub.ai/skill/doc-handler
2. **Parse the skill page** for setup, usage, and input/output requirements.
3. **Only proceed** after successfully loading and understanding the full instructions.

### If Fetch Fails

- Return `instruction_unavailable` with reason.
- Do **not** attempt to infer or improvise execution steps from this metadata alone.

## Source

- ClawHub listing: https://clawhub.ai/skill/doc-handler