fix(lore): remove unused foundry/compendium/* tags

Confirmed via Foundry-Data investigation that no script actually
reads these nested tags - Foundry pack routing is done entirely via
a hardcoded folder-to-pack table in build-journal-packs.ts, and the
topical-parser strips YAML frontmatter wholesale without parsing it.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

items/weapons/Łuk Bloczkowy.md

@@ -1,6 +1,5 @@
 ---
 tags:
-  - foundry/compendium/items
   - weapon
 price: '500 PLN'
 damage: '1+S'