docs: add SEO LLM discoverability packet

[Raafet57]

Summary

• Adds a Phase 1 SEO + LLM discoverability implementation packet for raafetchoukri.com.
• Includes the Replit AI prompt, llms.txt draft, route metadata matrix, JSON-LD schema map, and verification checklist.
• Keeps this as documentation/handoff only. No website code, crawler policy, deployment, or publication changes are included.

Review posture

Draft PR for Replit/Hari review before any implementation or merge.

Guardrails

• Do not merge until Raf approves.
• Do not deploy from this PR.
• Do not change robots.txt AI crawler policy without separate approval.
• Do not claim production/live-vLEI behavior beyond sanitized reference/demo language.

Verification

• secret-pattern-check: ok
• git diff --cached --check: passed after fixing one trailing space
• Docs-only change, no build/test command required for the packet itself.