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The slide titled "Tool Calling" / "How the Harness Reaches the World" was added to the deck after the GDG Kolachi event on Apr 25, 2026, so it doesn't belong in the historical record of what was actually presented. Reverting the GDG deck to as-presented state. The slide is preserved in the new claude-code-best-practice fork (which is the canonical living reference owned by presentation-claude-code), so no content is lost overall — this is a deliberate divergence between the two decks. Slide had no data-level, so the journey bar is structurally unaffected. Renumbered slides 15..53 → 14..52 via sentinel-replacement. Final count: 52. Co-Authored-By: Claude <noreply@anthropic.com>