docs: add Claude Code PII firewall terminal visual

[sidmohan0]

What changed

• adds datafog-terminal.webp, a clean code-and-terminal screenshot of DataFog’s Claude Code PII firewall
• shows .claude/settings.json registering datafog-hook
• shows a real PreToolUse payload denied after detecting credit-card, email, and phone data without echoing matched values

Why

Provide a documentation-ready visual that communicates DataFog’s current offline PII-firewall focus through a concrete developer workflow rather than a generic demo or marketing concept.

Validation

• ran the shown hook path against the local datafog-python package
• verified the deny response and entity counts against benchmarks/payloads/hook_pretooluse.json
• visually checked the complete settings JSON and terminal transcript
• validated the final asset with webpinfo: lossless WebP, 1536×1024, one frame, no decoding errors

[CLAassistant]

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