5f78aa1444
Core engine for the Great Cycle mechanic (GDD Section IV): - GreatCycleState tracking: cycle number, run within cycle, theme - RunTrace recording: death position, school, biome, discoveries per run - Cycle advancement: auto-advance to next cycle after 7 runs - Great Renewal: resets traces, advances theme, strengthens Mycelium - 6 narrative themes (Awakening→Doubt→Realization→Attempt→Acceptance→Synthesis) - Cycle world modifiers: terrain/resources/creatures scale with cycle - Narrative data JSON with Russian/English lore fragments per theme - MetaState + persistence + RunState extended with cycle fields - 38 new tests (549 total), all passing Co-authored-by: Cursor <cursoragent@cursor.com>