feat: add Prettier with go-template and toml plugins, format all files

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

content/posts/2026-05-08-the-warlords-hour/index.md

@@ -1,9 +1,9 @@
 ---
-title:       "The Warlord's Hour"
+title: "The Warlord's Hour"
 description: "A fearsome samurai warlord, clad in magnificent lacquered armour, receives the quiet ceremony of sake from a geisha — power and grace suspended in a single, breathless moment on an ancient throne."
-date:        2026-05-08
-author:      "valknar"
-featured:    false
+date: 2026-05-08
+author: "valknar"
+featured: false
 categories:
   - Historical
   - Dark