docs: sync Chinese README quick start

[Drincann]

PR Type

Documentation

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Description

• Refresh Chinese README wording

• Update quick-start wallet examples

• Add QR-related command examples

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Diagram Walkthrough

flowchart LR
  A["Chinese README"] -- "updates wording" --> B["CLI overview"]
  A -- "refreshes examples" --> C["Quick start"]
  C -- "adds" --> D["QR receive/sign flows"]

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File Walkthrough

	Relevant files
Documentation	README_zh.md Refresh Chinese quick-start documentation examples              README_zh.md Refines the Chinese project summary wording. Updates wallet creation syntax to bitcold wallet create wallet_0. Refreshes account display and signing examples with wallet_0@account_0:0. Adds --qr signing output and receive-address QR examples. +13/-8

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[github-actions]

PR Reviewer Guide 🔍

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⏱️ Estimated effort to review: 1 🔵⚪⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ No major issues detected

[github-actions]

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