refactor: prefix post folders with date, lock permalinks via slug

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

content/posts/2026-04-16-kawaii-gore-fest/index.md

@@ -0,0 +1,15 @@
+---
+title:       "\"Kawaii\" Gore-Fest"
+description: "A massive, high-detail monster truck with a shimmering pearlescent rainbow paint job and unicorn horn hood ornament, barreling through a decaying, ash-covered urban wasteland. The truck is adorned with sparkling glitter accents and neon-pink \"cute\" graffiti, contrasting sharply with the bleak, desaturated backdrop of skeletal skyscrapers and wandering zombie hordes."
+date:        2026-04-16
+author:      "valknar"
+featured:    false
+categories:
+  - Motor
+tags:
+  - Graffiti
+  - Monster Truck
+  - Zombiefied
+  - Rainbow
+slug: kawaii-gore-fest
+---