docs: Improve TODO.md formatting and readability

- Add consistent blank lines between sections for better readability
- Clean up formatting for improved document structure
- Maintain all content while improving visual organization

docs/TODO.md

@@ -7,6 +7,7 @@
 ## 🎯 **NEW REQUIREMENTS ANALYSIS**
 
 ### **Callback & API Integration Requirements**
+
 Based on user feedback analysis, the plugin needs enhanced callback mechanisms and dual scheduling methods:
 
 1. **API Callback Integration** - Accept callbacks for external API calls and database storage
@@ -14,6 +15,7 @@ Based on user feedback analysis, the plugin needs enhanced callback mechanisms a
 3. **Reporting Service Integration** - Support for external reporting and analytics services
 
 ### **Current Implementation Gap Analysis**
+
 - ✅ **Basic scheduling**: Single `scheduleDailyNotification` method exists
 - ❌ **Callback system**: No callback mechanism for external services
 - ❌ **Dual scheduling**: No separation between content fetch and user notification
@@ -26,11 +28,11 @@ Based on user feedback analysis, the plugin needs enhanced callback mechanisms a
 
 ### **Phase 5: Callback & API Integration (NEW PRIORITY)**
 
-**Estimated Duration**: 3-5 days  
 **Complexity Level**: 🔴 **HIGH** - Requires significant interface redesign  
 **Dependencies**: Current plugin architecture, interface definitions  
 
 #### **Phase 5.1: Callback System Design (Days 1-2)**
+
 **Complexity**: 🔴 **HIGH** - Core architecture changes required
 
 - [ ] **Design callback interface architecture**
@@ -53,6 +55,7 @@ Based on user feedback analysis, the plugin needs enhanced callback mechanisms a
   - [ ] **Estimated Effort**: 6-8 hours
 
 #### **Phase 5.2: Dual Scheduling Implementation (Days 2-3)**
+
 **Complexity**: 🟡 **MEDIUM** - New method implementations
 
 - [ ] **Implement content fetch scheduling method**
@@ -76,6 +79,7 @@ Based on user feedback analysis, the plugin needs enhanced callback mechanisms a
   - [ ] **Estimated Effort**: 4-6 hours
 
 #### **Phase 5.3: API Integration & Testing (Days 3-4)**
+
 **Complexity**: 🟡 **MEDIUM** - Integration and testing
 
 - [ ] **Implement API callback handlers**
@@ -98,6 +102,7 @@ Based on user feedback analysis, the plugin needs enhanced callback mechanisms a
   - [ ] **Estimated Effort**: 8-10 hours
 
 #### **Phase 5.4: Documentation & Examples (Day 5)**
+
 **Complexity**: 🟢 **LOW** - Documentation updates
 
 - [ ] **Update API documentation**
@@ -116,22 +121,26 @@ Based on user feedback analysis, the plugin needs enhanced callback mechanisms a
 
 ## 🔄 **CURRENT STATUS & COMPLETED WORK**
 
-### **Phase 1: Foundation & Testing (Weeks 1-2) - COMPLETED ✅**
+### **Phase 1: Foundation & Testing - COMPLETED ✅**
+
 - ✅ **Phase 1.1 Restore Android Implementation** - COMPLETE
 - ✅ **Phase 1.2 Fix Interface Definitions** - COMPLETE
 - ✅ **Phase 1.3 Fix Test Suite** - COMPLETE
 
-### **Phase 2: Core Pipeline Implementation (Week 2) - COMPLETED ✅**
+### **Phase 2: Core Pipeline Implementation - COMPLETED ✅**
+
 - ✅ **Phase 2.1 Prefetch System** - COMPLETE
 - ✅ **Phase 2.2 Caching Layer** - COMPLETE
 - ✅ **Phase 2.3 Enhanced Scheduling** - COMPLETE
 
-### **Phase 3: Production Features (Week 3) - COMPLETED ✅**
+### **Phase 3: Production Features - COMPLETED ✅**
+
 - ✅ **Phase 3.1 Fallback System** - COMPLETE
 - ✅ **Phase 3.2 Metrics & Monitoring** - COMPLETE
 - ✅ **Phase 3.3 Security & Privacy** - COMPLETE
 
-### **Phase 4: Advanced Features (Week 4) - COMPLETED ✅**
+### **Phase 4: Advanced Features - COMPLETED ✅**
+
 - ✅ **Phase 4.1 User Experience** - COMPLETE
 - ✅ **Phase 4.2 Platform Optimizations** - COMPLETE
 - ✅ **Phase 4.3 Enterprise Features** - COMPLETE
@@ -140,13 +149,15 @@ Based on user feedback analysis, the plugin needs enhanced callback mechanisms a
 
 ## 🎯 **IMMEDIATE NEXT ACTIONS**
 
-### **🔄 CURRENT PHASE: Research & Analysis (Next 2-4 hours)**
+### **🔄 CURRENT PHASE: Research & Analysis**
+
 1. **Complete callback system design** - Finalize architecture decisions
 2. **Create interface mockups** - Design new method signatures
 3. **Plan migration strategy** - Ensure backward compatibility
 4. **Estimate implementation effort** - Refine time estimates
 
-### **🚀 NEXT PHASE: Implementation Preparation (Next 4-6 hours)**
+### **🚀 NEXT PHASE: Implementation Preparation**
+
 1. **Create feature branch** - `feature/callback-api-integration`
 2. **Update interface definitions** - Add callback support
 3. **Create implementation plan** - Break down into manageable tasks
@@ -157,6 +168,7 @@ Based on user feedback analysis, the plugin needs enhanced callback mechanisms a
 ## 📊 **SUCCESS METRICS & MILESTONES**
 
 ### **Phase 5 Success Criteria**
+
 - [ ] **Callback System**: 100% callback execution success rate
 - [ ] **Dual Scheduling**: Both methods working independently
 - [ ] **API Integration**: Successful external service integration
@@ -165,6 +177,7 @@ Based on user feedback analysis, the plugin needs enhanced callback mechanisms a
 - [ ] **Test Coverage**: 95%+ coverage for new functionality
 
 ### **Quality Gates**
+
 - [ ] **Code Review**: All changes reviewed by team
 - [ ] **Integration Testing**: End-to-end callback testing
 - [ ] **Performance Testing**: No degradation in existing functionality
@@ -176,6 +189,7 @@ Based on user feedback analysis, the plugin needs enhanced callback mechanisms a
 ## 🔍 **TECHNICAL CONSIDERATIONS**
 
 ### **Architecture Decisions Required**
+
 1. **Callback Execution Model**: Synchronous vs. asynchronous execution
 2. **Error Handling Strategy**: How to handle callback failures
 3. **Security Model**: Callback validation and sandboxing
@@ -183,6 +197,7 @@ Based on user feedback analysis, the plugin needs enhanced callback mechanisms a
 5. **Platform Compatibility**: Ensuring cross-platform callback support
 
 ### **Risk Mitigation**
+
 - **High Complexity**: Break implementation into smaller, testable units
 - **Interface Changes**: Maintain backward compatibility with deprecation warnings
 - **Performance Impact**: Implement callback batching and optimization
@@ -193,12 +208,14 @@ Based on user feedback analysis, the plugin needs enhanced callback mechanisms a
 ## 📚 **RESEARCH & REFERENCES**
 
 ### **Current Implementation Analysis**
+
 - **Android**: Has basic scheduling with WorkManager integration
 - **iOS**: Swift-based implementation with notification handling
 - **Web**: Basic browser notification support
 - **Interfaces**: Well-defined TypeScript interfaces ready for extension
 
 ### **Design Patterns to Consider**
+
 - **Observer Pattern**: For callback registration and execution
 - **Strategy Pattern**: For different callback execution strategies
 - **Factory Pattern**: For creating different callback types