fix: dependency of curl and jq for fast-sync

[wgr523]

add a single sentence in README

Summary by CodeRabbit

• Documentation
  • Updated Docker setup instructions to include installing curl and jq for fast synchronization.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 0707e984-f2bd-47b5-866f-b4824cec40b7

📥 Commits

Reviewing files that changed from the base of the PR and between 825bc02 and 4c47364.

📒 Files selected for processing (1)

• README.md

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📝 Walkthrough

Walkthrough

Changes

Docker setup

Layer / File(s)	Summary
Document fast-sync dependencies README.md	The Docker setup requirements now include curl and jq, with an apt installation command.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Suggested reviewers: benjamin202410

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies the documented curl and jq dependencies for fast-sync.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fixfastsync-20260806

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