Add 'Read Chapter 1 free' link to README

[NirDiamant]

Adds a tracked 'Read Chapter 1 free' link under the book CTA, funneling repo readers into the sampling -> buy flow.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Documentation
  • Updated README with a new promotional offer for free "Chapter 1" access in the hero section.

[coderabbitai]

Wondering what really moved? Review this PR in Change Stack to inspect semantic changes, definitions, and references.

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ℹ️ Recent review info

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Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 04e6ebce-6c56-498f-b5fe-bbd2e1e633d6

📥 Commits

Reviewing files that changed from the base of the PR and between 1133d45 and 1871158.

📒 Files selected for processing (1)

• README.md

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📝 Walkthrough

Walkthrough

This PR adds a marketing call-to-action link to the README hero section. A centered line prompting readers to "Read Chapter 1 free" with a tracking URL is placed directly beneath the existing "New here?" navigation prompt.

Changes

Hero Section Marketing

Layer / File(s)	Summary
Free chapter CTA README.md	A marketing link offering free Chapter 1 access is added to the hero section beneath the existing "New here?" call-to-action.

Possibly related PRs

• NirDiamant/Agent_Memory_Techniques#3: Also updates README.md to add a hero section CTA marketing line beneath existing book navigation prompts.

Poem

🐰 A carrot link now gleams so bright,
"Read Chapter One!" the hero cries,
Below the prompt, a tracking sight,
To draw in curious seeking eyes,
Come hop along, let pages fly!

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🎯 1 (Trivial) | ⏱️ ~2 minutes

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch add-free-chapter-cta

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