v1.6.0

Added

• Input normalization: normalizeCodeEditInput() strips markdown fences from LLM-wrapped code_edit to prevent Morph API confusion
• Marker leakage guard: Post-merge validation detects when Morph treats // ... existing code ... markers as literal text instead of expanding them — aborts file write and returns actionable error
• Catastrophic truncation guard: Dual-metric validation (>60% char loss AND >50% line loss) prevents silent data loss from failed merges
• Structured error recovery: Guard failures include specific metrics, explanations, and 3 actionable recovery options
• TUI titles for guard failures: tool.execute.after hook now shows branded titles like Morph: blocked (marker leakage) and Morph: blocked (truncation)
• Test suite: 32 tests covering normalization, marker leakage logic, and truncation detection edge cases
• CI: GitHub Actions for test/typecheck on push and automated releases on tags

Changed

• EXISTING_CODE_MARKER constant: Extracted to module-level constant (no longer exported) for consistency and testability
• Guard logging: Both post-merge guards emit diagnostic warn-level logs before returning errors
• Hardcoded marker strings: All references to "// ... existing code ..." now use the EXISTING_CODE_MARKER constant

Fixed

• Plugin loader crash: Removed unnecessary named exports (EXISTING_CODE_MARKER, normalizeCodeEditInput, MorphFastApply) that caused OpenCode's plugin loader to crash when iterating exports and calling a string as a function. Only export default MorphFastApply remains.
• Consistent formatting: Applied semicolons and trailing commas throughout for code style consistency