Redesign the interaction mechanic into a recursive chain reaction system
where items can trigger cascading reactions. Keys now open themed chests
which produce items that may trigger further reactions, with chain bonus
rewards for multi-step chains (x2/x3/x4+).
- Add 6 themed chests + mysterious chest + alchemist stone catalyst
- Rewrite InteractionEngine with recursive chain loop (max depth 10)
- Add ConsumeTrigger field to InteractionRule for catalyst support
- Add ChainBonusEvent and enrich InteractionTriggeredEvent with context
- Update rendering to show both reacting items and chain indicators
- Add item descriptions with anticipation hints for chain partners
- Update GDD Section 5 with full chain reaction specification
Integrate stats, resources, and cosmetics into adventures via conditional
branches gated by game state checks. Each of the 9 adventures now has a
secret branch that rewards exploration and encourages replay with subtle
hints on locked choices. The endgame box now triggers a Destiny adventure
that acknowledges all completed adventures and secret branches, with four
ending tiers culminating in an ultimate ending when all 9 secrets are found.
Also adds the crafting engine, CLAUDE.md and specifications.md for faster
onboarding.
