refactor(rules): split all 9 rulebooks into per-topic files

The rulebooks (Podręcznik Gry, Księga Magii, and 7 others) were single
monolithic documents, some over 1000 lines, making it hard to find or link
to one specific rule. Restructured them to match the convention already
used for lore/npcs/spells/disciplines: a themed subfolder per book with one
file per topic (talent, race, status effect, action type, etc.), and the
original book file rewritten into a hub/table-of-contents linking to them.

- Where a rulebook chapter duplicated content that already has a canonical
  home elsewhere (spell lists vs spells/, artifacts vs items/, disciplines
  vs disciplines/), replaced the duplicated text with links instead of
  copying it a second time.
- Verified all ~360 internal links across the new structure resolve, and
  fixed two real bugs surfaced by that check: unescaped parentheses in
  filenames breaking Markdown link syntax, and an off-by-one relative path
  in Rozdział VII - Religia.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019xsdbKAT27PoAX9SWH3MFK

rules/04. Arcanum Sanguinis/Rozdział I - Teoria Magii Krwi/Wchłanianie Krwi.md

@@ -0,0 +1,13 @@
+---
+tags:
+  - rule
+  - arcanum-sanguinis
+  - blood-magic
+aliases:
+  - Wchłanianie Krwi
+---
+- **Koszt**: Akcja, min. 1 punkt Krwi
+
+Mag wchłania w siebie zebraną energię życiową wrogów. Za każdy poświęcany 1 punkt Krwi, mag odzyskuje 3 punkty Żywotności.
+
+Akcja ta może być wykonana wyłącznie raz na rundę.