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CHANGELOG.md

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+# Changelog
+
+All notable changes to Bubble Tea Maintenance Agent will be documented here.
+
+Format based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
+Versioning follows [Semantic Versioning](https://semver.org/).
+
+## [1.0.0] - 2025-10-19
+
+### Added
+
+**Core Functionality:**
+- `diagnose_issue()` - Comprehensive issue diagnosis for Bubble Tea apps
+- `apply_best_practices()` - Validation against 11 expert tips
+- `debug_performance()` - Performance bottleneck identification
+- `suggest_architecture()` - Architecture pattern recommendations
+- `fix_layout_issues()` - Lipgloss layout problem solving
+- `comprehensive_bubbletea_analysis()` - All-in-one health check orchestrator
+
+**Issue Detection:**
+- Blocking operations in Update() and View()
+- Hardcoded terminal dimensions
+- Missing terminal recovery code
+- Message ordering assumptions
+- Model complexity analysis
+- Goroutine leak detection
+- Layout arithmetic errors
+- String concatenation inefficiencies
+- Regex compilation in hot paths
+- Memory allocation patterns
+
+**Best Practices Validation:**
+- Tip 1: Fast event loop validation
+- Tip 2: Debug message dumping capability check
+- Tip 3: Live reload setup detection
+- Tip 4: Receiver method pattern validation
+- Tip 5: Message ordering handling
+- Tip 6: Model tree architecture analysis
+- Tip 7: Layout arithmetic best practices
+- Tip 8: Terminal recovery implementation
+- Tip 9: teatest usage
+- Tip 10: VHS demo presence
+- Tip 11: Additional resources reference
+
+**Performance Analysis:**
+- Update() execution time estimation
+- View() rendering complexity analysis
+- String operation optimization suggestions
+- Loop efficiency checking
+- Allocation pattern detection
+- Concurrent operation safety validation
+- I/O operation placement verification
+
+**Architecture Recommendations:**
+- Pattern detection (flat, multi-view, model tree, component-based, state machine)
+- Complexity scoring (0-100)
+- Refactoring step generation
+- Code template provision for recommended patterns
+- Model tree, multi-view, and state machine examples
+
+**Layout Fixes:**
+- Hardcoded dimension detection and fixes
+- Padding/border accounting
+- Terminal resize handling
+- Overflow prevention
+- lipgloss.Height()/Width() usage validation
+
+**Utilities:**
+- Go code parser for model, Update(), View(), Init() extraction
+- Custom message type detection
+- tea.Cmd function analysis
+- Bubble Tea component usage finder
+- State machine enum extraction
+- Comprehensive validation framework
+
+**Documentation:**
+- Complete SKILL.md (8,000+ words)
+- README with usage examples
+- Common issues reference
+- Performance optimization guide
+- Layout best practices guide
+- Architecture patterns catalog
+- Installation guide
+- Decision documentation
+
+**Testing:**
+- Unit tests for all 6 core functions
+- Integration test suite
+- Validation test coverage
+- Test fixtures for common scenarios
+
+### Data Coverage
+
+**Issue Categories:**
+- Performance (7 checks)
+- Layout (6 checks)
+- Reliability (3 checks)
+- Architecture (2 checks)
+- Memory (2 checks)
+
+**Best Practice Tips:**
+- 11 expert tips from tip-bubbltea-apps.md
+- Compliance scoring
+- Recommendation generation
+
+**Performance Thresholds:**
+- Update() target: <16ms
+- View() target: <3ms
+- Goroutine leak detection
+- Memory allocation analysis
+
+### Known Limitations
+
+- Requires local tip-bubbltea-apps.md file for full best practices validation
+- Go code parsing uses regex (not AST) for speed
+- Performance estimates are based on patterns, not actual profiling
+- Architecture suggestions are heuristic-based
+
+### Planned for v2.0
+
+- AST-based Go parsing for more accurate analysis
+- Integration with pprof for actual performance data
+- Automated fix application (not just suggestions)
+- Custom best practices rule definitions
+- Visual reports with charts/graphs
+- CI/CD integration for automated checks
+
+## [Unreleased]
+
+### Planned
+
+- Support for Bubble Tea v1.0+ features
+- More architecture patterns (event sourcing, CQRS)
+- Performance regression detection
+- Code complexity metrics (cyclomatic complexity)
+- Dependency analysis
+- Security vulnerability checks
+
+---
+
+**Generated with Claude Code agent-creator skill on 2025-10-19**