- Remove lifesteal from spells (player has no health to heal)
- Remove execute effects (too powerful instant-kill mechanic)
- Remove freeze status effect (doesn't fit game design)
- Remove knowledgeRetention skill (study progress is now always saved)
- Fix soulBinding skill (now binds guardian essence to equipment)
- Buff ancientEcho skill (+1 capacity per level instead of per 2 levels)
- Rename lifesteal_5 to mana_siphon_5 in enchantment effects
- Update guardian perks:
- Water: 10% double cast chance instead of lifesteal
- Dark: 25% crit chance instead of lifesteal
- Life: 30% damage restored as mana instead of healing
- Death: +50% damage to enemies below 50% HP instead of execute
- Add floor armor system (flat damage reduction)
- Update spell effects display in UI
- Fix study cancellation - progress is always saved when pausing
- Guardian barriers with 3x HP regen on guardian floors
- Compound mana types auto-unlock when components available
- Legs equipment slot with 5 equipment types
- Expeditious Retreat and movement enchantments for legs
- Fixed tests for current skill definitions (65/65 pass)
- New achievements for elements, attunements, and guardians
- Removed nonsensical mechanics (thorns, manaShield for player)
- Cleaned up skill test references to match current implementation
- Fix transference mana display (show unlocked elements even with 0 mana)
- Remove blocking/dodging mechanics (player has no health):
- Replace Seer's foresight with criticalMastery
- Replace Warden's defensive skills with mana efficiency skills
- Replace Strider's evasive with fluidMotion
- Add guardian barriers (50% of HP, doesn't regenerate)
- Add floor HP regeneration (scales with floor level, 0 for guardians)
- Implement climb-down mechanic:
- Cannot switch away from climb while above floor 1
- Must fight through each floor to exit
- Exit Spire button triggers descent
- Update UI to show barrier bar and descent status
