feat(skills): world-building carries the cosmology backdrop

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HuHRPE7VfppUJEaoGBEUqZ

.claude/skills/world-building/SKILL.md

@@ -86,6 +86,13 @@ body, a disposition, who knows what — **STOP.** Do not edit. Present the exact
 before/after change and the reason, and get explicit approval first. New files
 and new entries need no approval; edits to existing canon always do.
 
+New content must also slot against the world's overarching cosmology — the good
+god (the Warden), his angels (the Sent), and the seven demon kings who work
+against him through influence, possession, and blood sacrifice. Read
+`references/cosmology.md` before authoring; it is the backdrop nothing may
+contradict, and it carries the authoring rules that keep the war in tone
+(distant, worked through people, never epic, blessing/curse read through Luck).
+
 ### 3. Draft in the correct format
 
 - **Bible entries:** see `references/schema.md` for the full field-by-field
@@ -130,6 +137,9 @@ added a new bible file or closed out a pending thread.
 
 ## Reference files
 
+- `references/cosmology.md` — the overarching theme (the Warden and the Seven)
+  every piece of content reconciles against, plus the rules that keep it in tone.
+  Read before authoring any lore, NPC, quest, or item.
 - `references/schema.md` — the complete bible + JSON schema, all validation rules,
   the secrecy scale, the knowledge-gate model, worked examples. Read before
   authoring bible entries.