Add comprehensive IP reputation and safety guidelines for proxy usage

[Copilot]

This PR addresses concerns about maintaining IP reputation and safety while using the proxy scraper checker tool.

Overview

Users expressed concerns about potential risks when running the tool, including:

• Inadvertently accessing honeypots or monitoring systems
• Triggering detection systems with aggressive request patterns
• Maintaining clean IP reputation while testing proxies

Changes Made

📚 Enhanced Documentation

• Added comprehensive safety section to README.md covering:
  • Potential risks (honeypots, rate limiting, IP reputation damage)
  • Best practices (VPN usage, conservative settings, trusted sources)
  • Legal and ethical considerations
  • Recommended configuration changes

⚠️ Configuration Safety Warnings

• Enhanced config.toml with safety warnings and explanations
• Added context for potentially risky settings like high concurrency
• Provided guidance on timeout values and proxy source selection

🛡️ Runtime Safety Alerts

• Added intelligent warnings that display when:
  • Using high concurrent checks (≥1000) that may trigger detection
  • Using aggressive timeouts (<3s) that appear suspicious
  • Using many public proxy sources (>10) that may include honeypots
• General safety tips about VPN usage displayed on startup

🔧 Safer Configuration Template

• Created config-safe.toml with conservative defaults:
  • Reduced concurrent checks: 50 (vs 4096 default)
  • Increased timeouts: 10s (vs 5s default)
  • Fewer proxy sources: 6 (vs 18 default)
  • Lower max proxies per source: 1000 (vs 100000 default)

Example Output

Default configuration triggers appropriate warnings:

⚠️  HIGH CONCURRENCY WARNING: 4096 concurrent checks may trigger detection systems!
Consider reducing max_concurrent_checks to 50-100 for safer operation.
⚠️  PROXY SOURCE WARNING: Using 18 public proxy sources.
Public sources may include honeypots or monitoring systems.
💡 SAFETY TIP: Use a VPN when running this tool to protect your IP reputation.

Safer configuration shows only general tips:

💡 SAFETY TIP: Use a VPN when running this tool to protect your IP reputation.
💡 For detailed safety guidelines, see the README.md file.

Impact

• No breaking changes - all existing functionality preserved
• Educational - users are now informed about potential risks
• Configurable - users can choose their own risk tolerance
• Practical - provides actionable guidance for safer operation

Users concerned about IP reputation can now use the tool confidently with appropriate safeguards in place.

Fixes #694.

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💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

[matecsaj]

Thank you!