Schedule faction-systems article for 2026-06-23

[Davidslv]

Summary

• Adds a new blog post: "How Enemies Tell the Player Apart from Other Enemies" — a write-up of faction systems vs direct-reference architecture in roguelikes, with Ruby/ECS examples drawn from Vanilla Roguelike.
• Scheduled for 2026-06-23, slotting in after the existing Modular Rails Tuesday cadence ends on 2026-06-16, so the modular-rails launch series keeps the foreground.
• Categories: ruby game-development. Tags: roguelike ruby game-development ECS AI architecture faction-system.

Notes for review

• The closing footer cross-links to the Vanilla Roguelike repo and the /books/vanilla-roguelike/ web edition — drop or rework if that feels off.
• Title kept the original "How Enemies Tell the Player Apart from Other Enemies" framing; an alternative would be a punchier "Faction systems in roguelikes" — frontmatter + filename rename if preferred.
• Reschedule is a one-line frontmatter edit + filename rename if you want it earlier or later.

Test plan

• bundle exec jekyll serve and confirm the post renders cleanly (frontmatter, fenced Ruby blocks, headings, internal links).
• Verify it does not appear on the homepage until the publish date (it's future-dated).
• Spot-check categories/tags pages pick it up.