v0.4.0

What's Changed

• Add multi-provider embeddings (Voyage + Ollama) with interactive onboarding (5ae205b)
• Add LLM-based gate fallback for dream mode (Haiku pre-filter) (d8fc527)
• Add Voyage reranker (rerank-2-lite) for second-stage memory relevance scoring (f27c6d8)
• Expand somnium init into 4-step onboarding wizard with colored UI (c11c7ed)
• Add AST-aware code chunking via tree-sitter (f6714f7)
• Document status line feature in README (3362b9c)