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+# 🔄 Context Restoration Guide for Baba Yaga Development
+
+## 📋 **Quick Context Recovery**
+
+### **Current Project State**
+- **Location**: `/Users/eli/Code/tour/js/scripting-lang`
+- **Goal**: Align C and JavaScript implementations using shared test suite
+- **Progress**: 74% → **79%** compatibility (**MAJOR breakthrough this session!**)
+
+### **Implementation Status**
+| Implementation | Tests Passing | Status |
+|----------------|---------------|---------|
+| **JavaScript** | 28/34 (82%) | Reference implementation |
+| **C** | **27/34 (79%)** | **Major breakthrough! Only 7 tests from goal!** |
+
+## 🎯 **Immediate Context: Function Composition Logic**
+
+### **Current High-Priority Issue**
+**Problem**: C implementation returns function placeholders instead of executing compositions
+
+**Failing Patterns**:
+```bash
+# What C returns now → What it should return
+compose @double @square 3  →  <function:partial>  (should be 18)
+pipe @double @square 2     →  <function:partial>  (should be 16)  
+apply @double 7            →  Error             (should be 14)
+```
+
+**Impact**: Fixing this will likely push C to 30+/34 tests (88%+)
+
+## 📁 **Key Files to Know**
+
+### **Test Infrastructure**
+- `./tests/run_shared_tests.sh` - Unified test runner for both implementations
+- `tests/unit/08_first_class_functions.txt` - Currently failing due to composition logic
+
+### **C Implementation Core Files**
+- `c/src/stdlib.c` - Standard library functions (needs composition logic fix)
+- `c/src/interpreter.c` - Function registration and execution
+- `c/include/baba_yaga.h` - Function declarations
+
+### **JavaScript Reference**
+- `js/lang.js` - Reference implementation for behavior comparison
+
+## 🛠 **Essential Commands**
+
+```bash
+# Test current status
+./tests/run_shared_tests.sh c
+
+# Test specific failing area  
+c/bin/baba-yaga -f tests/unit/08_first_class_functions.txt
+
+# Build C after changes
+cd c && make && cd ..
+
+# Compare implementations
+./tests/run_shared_tests.sh c > c_results.txt
+./tests/run_shared_tests.sh js > js_results.txt
+```
+
+## ✅ **Major Fixes Completed This Session**
+
+1. **C Assertion Fix** - Now exits on false assertions like JavaScript
+2. **C Logical Operators** - Now supports number-to-boolean coercion
+3. **Pipe Function** - Implemented missing `pipe` function in C
+4. **Function References** - Confirmed `@function` syntax works perfectly
+
+## 📚 **Documentation Files**
+
+- `SESSION_PROGRESS_DETAILED.md` - Comprehensive session progress
+- `PROGRESS_UPDATE_2.md` - Executive summary
+- `NEXT_STEPS.md` - Prioritized action plan
+- `ALIGNMENT_PLAN.md` - Multi-phase alignment strategy
+
+## 🎯 **Next Session Action Plan**
+
+1. **Fix Function Composition Logic** (60-90 min)
+   - Modify `stdlib_compose`, `stdlib_pipe`, `stdlib_apply` 
+   - Make them execute functions instead of returning placeholders
+   - Expected: Push C to 30+/34 tests
+
+2. **Fix IO Operations** (45-60 min)  
+   - Debug table pattern matching in `when` expressions
+   - Fix `tests/unit/05_io_operations.txt`
+
+3. **Investigate Edge Cases** (30-45 min)
+   - Debug assertion failures in edge case test
+   - Clean up remaining compatibility issues
+
+## 💡 **Key Insights to Remember**
+
+- **Function references (`@function`) already work perfectly** - no parser issues
+- **Most failures are semantic differences**, not architectural problems  
+- **C implementation is much closer to goal than initially appeared**
+- **Type coercion and error handling differences are main remaining gaps**
+
+## 🚀 **Session Momentum**
+
+The project has **incredible momentum**! We've moved from architectural concerns to implementation refinements. The next session should achieve the **88%+ compatibility goal**.
+
+---
+
+**Bottom Line**: Read this file first, check `SESSION_PROGRESS_DETAILED.md` for specifics, then dive into function composition logic fix! 🎯
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