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+---
+"@fission-ai/openspec": minor
+---
+
+Add support for new AI assistants and improve validation
+
+**New Features:**
+- Add Crush AI assistant support with configuration and documentation
+- Add Auggie (Augment CLI) assistant support with configuration and documentation
+- Add argument support to archive slash command for more flexible workflows
+
+**Bug Fixes:**
+- Improve delta spec validation with case-insensitive header matching and better empty section detection
+- Honor --no-validate flag and ignore metadata during archive validation
+
+**Development:**
+- Add VS Code dev container configuration for easier development setup