docs: Update worklog with session summary

worklog.md

@@ -682,3 +682,66 @@ Continue refactoring `/home/z/my-project/src/app/page.tsx` to reduce its size fu
 - page.tsx now well under the 1000 line target (434 lines)
 - Better code organization with skills, stats, and upgrade logic in dedicated modules
 - Easier to test and maintain individual features
+
+---
+## Session Summary - Major Refactoring & Special Effects Implementation
+### Date: Current Session
+
+### Work Completed:
+
+**1. Documentation Updates:**
+- Updated AGENTS.md with new file structure, slice pattern documentation, file size guidelines
+- Created comprehensive README.md with project overview, features, tech stack, getting started
+- Created AUDIT_REPORT.md documenting unimplemented effects and missing functionality
+
+**2. Major Refactoring (74% page.tsx reduction):**
+- Extracted SkillsTab.tsx (338 lines) with tier evolution and milestone upgrades
+- Extracted StatsTab.tsx (545 lines) with comprehensive stats display
+- Extracted UpgradeDialog.tsx (115 lines) for upgrade selection
+- Moved getDamageBreakdown and getTotalDPS to computed-stats.ts
+- Moved ELEMENT_ICON_NAMES to constants.ts
+- page.tsx reduced from ~2554 → 434 lines (83% total reduction across session)
+
+**3. Store Refactoring:**
+- Store.ts reduced from 2138 → 1651 lines (23% reduction)
+- Extracted computed-stats.ts (18 functions)
+- Extracted navigation-slice.ts (floor navigation actions)
+- Extracted study-slice.ts (study system actions)
+
+**4. Combat Special Effects Implemented:**
+- MANA_CASCADE: +0.1 regen per 100 max mana
+- MANA_TORRENT: +50% regen when mana > 75%
+- DESPERATE_WELLS: +50% regen when mana < 25%
+- STEADY_STREAM: Immune to incursion penalty
+- MANA_ECHO: 10% chance double mana from clicks
+- EMERGENCY_RESERVE: Keep 10% mana on new loop
+- BATTLE_FURY: +10% damage per consecutive hit (resets on floor change)
+- COMBO_MASTER: Every 5th attack deals 3x damage
+- ADRENALINE_RUSH: Restore 5% mana on floor clear
+
+**5. Study Special Effects Implemented:**
+- MENTAL_CLARITY: +10% study speed when mana > 75%
+- STUDY_RUSH: First hour of study is 2x speed
+- STUDY_MOMENTUM: +5% study speed per consecutive hour (max +50%)
+- KNOWLEDGE_ECHO: 10% chance for instant study progress
+- STUDY_REFUND: 25% mana back on study completion
+
+**6. State Additions:**
+- consecutiveHits: Track consecutive hits for BATTLE_FURY
+- consecutiveStudyHours: Track consecutive study for STUDY_MOMENTUM
+- studyStartedAt: Track when study started for STUDY_RUSH
+- lastStudyCost: Track study cost for STUDY_REFUND
+
+### Git Commits:
+1. `refactor: Major codebase refactoring for maintainability` - Store and page refactoring
+2. `docs: Add README.md, update AGENTS.md, audit report, and massive refactoring` - Documentation + component extraction
+3. `feat: Implement critical special effects (partial)` - Mana/regen effects
+4. `feat: Implement combat special effects` - BATTLE_FURY, COMBO_MASTER, ADRENALINE_RUSH
+5. `feat: Implement study special effects` - MENTAL_CLARITY, STUDY_RUSH, etc.
+
+### Results:
+- All lint checks pass
+- Dev server running without errors
+- Major codebase cleanup and organization
+- Critical special effects now functional
+- Comprehensive documentation for future development